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escaping.","accounts_in_message":[],"_revision_number":4},{"id":"4eeb7949e88997ad21c4e80bf3f32e21f1ed6a94","author":{"_account_id":1000011,"name":"Build Bot","email":"build@couchbase.com","username":"buildbot","avatars":[{"url":"https://www.gravatar.com/avatar/0ba35a43c05d6329d9b2136bab05a733.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/0ba35a43c05d6329d9b2136bab05a733.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/0ba35a43c05d6329d9b2136bab05a733.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/0ba35a43c05d6329d9b2136bab05a733.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}],"tags":["SERVICE_USER"]},"date":"2016-04-08 08:03:36.000000000","message":"Patch Set 4: Verified+1\n\nBuild Successful \n\nhttp://factory.couchbase.com/job/ep-engine-gerrit-3.0.x/420/ : SUCCESS","accounts_in_message":[],"_revision_number":4},{"id":"25bcb4da95bad533a9302aa141c2665b81508909","author":{"_account_id":1000966,"name":"Dave Rigby","email":"daver@couchbase.com","username":"drigby","avatars":[{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"date":"2016-04-08 08:20:15.000000000","message":"Patch Set 4: Code-Review-1\n\nI agree with Chiyoung - this makes changes to setWithMeta etc which are irreverent in the general case.\n\nNote also that MB-12540 (http://review.couchbase.org/#/c/42861/) which went into 4.0.0 significantly simplified this logic, and removed the need for setCurrentCheckpoint_UNLOCKED entirely, and hence this deadlock.\n\nI personally would be more comfortable with backporting *that* change, as that has already been in sherlock for a long while and hence well-tested.","accounts_in_message":[],"_revision_number":4},{"id":"4032550a3c7222bef1ef46840bd1dd54a58981f3","author":{"_account_id":1000966,"name":"Dave 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So, given the time frame for 3.1.5, it may not be the best idea to refactor snapshot tracking in 3.0.x to how we do in sherlock.\n\nI think I\u0027ve another idea on how we can follow a single locking pattern in this code path, let me spend some time on this today.","accounts_in_message":[],"_revision_number":4},{"id":"2ecc45aafca8772c69546cd8a099f5fd11a83031","author":{"_account_id":1000338,"name":"Abhi 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refs/changes/67/62567/1 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/1 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/1 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/67/62567/1","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/1 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"c2b0a683b56038753907495f6db684819cb81923","subject":"MB-19093 [BP]: [ActiveStream] Address potential lock-inversion scenarios"}],"author":{"name":"abhinavdangeti","email":"abhinav@couchbase.com","date":"2016-04-07 18:23:37.000000000","tz":-420},"committer":{"name":"abhinavdangeti","email":"abhinav@couchbase.com","date":"2016-04-07 18:33:43.000000000","tz":-420},"subject":"MB-19113: Address lock inversion with snapshot lock and hash table lock","message":"MB-19113: Address lock inversion with snapshot lock and hash table lock\n\n[1m[31mWARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid\u003d5899)\n    [1m[0m  Cycle in lock order graph: [1m[35mM21372 (0x7d780000f510)[1m[0m \u003d\u003e [1m[35mM21408 (0x7d640000f920)[1m[0m \u003d\u003e [1m[35mM21372[1m[0m\n\n    Mutex [1m[35mM21408[1m[0m acquired here while holding mutex [1m[35mM21372[1m[0m in [1m[36mmain thread:\n    [1m[0m    #0 pthread_mutex_lock \u003cnull\u003e (engine_testapp+0x00000047e970)\n1 cb_mutex_enter \u003cnull\u003e (libplatform.so.0.1.0+0x000000003870)\n2 Mutex::acquire() /home/couchbase/couchbase/ep-engine/src/mutex.cc:31 (ep.so+0x0000001e287e)\n3 LockHolder::lock() /home/couchbase/couchbase/ep-engine/src/locks.h:71 (ep.so+0x000000082543)\n4 LockHolder::LockHolder(Mutex\u0026, bool) /home/couchbase/couchbase/ep-engine/src/locks.h:48 (ep.so+0x0000000821b2)\n5 VBucket::getSnapshotLock() /home/couchbase/couchbase/ep-engine/src/vbucket.h:212 (ep.so+0x000000104c72)\n6 EventuallyPersistentStore::queueDirty(RCPtr\u003cVBucket\u003e\u0026, StoredValue*, LockHolder*, bool, bool, bool) /home/couchbase/couchbase/ep-engine/src/ep.cc:2863 (ep.so+0x0000000d7123)\n7 EventuallyPersistentStore::set(Item const\u0026, void const*, bool, unsigned char) /home/couchbase/couchbase/ep-engine/src/ep.cc:683 (ep.so+0x0000000d9dfa)\n8 EventuallyPersistentEngine::store(void const*, void*, unsigned long*, ENGINE_STORE_OPERATION, unsigned short) /home/couchbase/couchbase/ep-engine/src/ep_engine.cc:2128 (ep.so+0x00000013d538)\n9 EvpStore(engine_interface*, void const*, void*, unsigned long*, ENGINE_STORE_OPERATION, unsigned short) /home/couchbase/couchbase/ep-engine/src/ep_engine.cc:229 (ep.so+0x00000013712d)\n10 mock_store /home/couchbase/couchbase/memcached/programs/engine_testapp/engine_testapp.c (engine_testapp+0x0000004c7304)\n11 storeCasVb11(engine_interface*, engine_interface_v1*, void const*, ENGINE_STORE_OPERATION, char const*, char const*, unsigned long, unsigned int, void**, unsigned long, unsigned short, unsigned int, unsigned char) /home/couchbase/couchbase/ep-engine/tests/ep_test_apis.cc:659 (ep_testsuite.so+0x0000000e8d17)\n12 store(engine_interface*, engine_interface_v1*, void const*, ENGINE_STORE_OPERATION, char const*, char const*, void**, unsigned long, unsigned short, unsigned int, unsigned char) /home/couchbase/couchbase/ep-engine/tests/ep_test_apis.cc:631 (ep_testsuite.so+0x0000000e654a)\n13 test_mb16357(engine_interface*, engine_interface_v1*) /home/couchbase/couchbase/ep-engine/tests/ep_testsuite.cc:11713 (ep_testsuite.so+0x0000000afc36)\n14 execute_test /home/couchbase/couchbase/memcached/programs/engine_testapp/engine_testapp.c (engine_testapp+0x0000004c4e2f)\n15 main crtstuff.c (engine_testapp+0x0000004c2d91)\n\n    Mutex [1m[35mM21372[1m[0m acquired here while holding mutex [1m[35mM21408[1m[0m in [1m[36mthread T10:\n    [1m[0m    #0 pthread_mutex_lock \u003cnull\u003e (engine_testapp+0x00000047e970)\n1 cb_mutex_enter \u003cnull\u003e (libplatform.so.0.1.0+0x000000003870)\n2 Mutex::acquire() /home/couchbase/couchbase/ep-engine/src/mutex.cc:31 (ep.so+0x0000001e287e)\n3 LockHolder::lock() /home/couchbase/couchbase/ep-engine/src/locks.h:71 (ep.so+0x000000082543)\n4 LockHolder::LockHolder(Mutex\u0026, bool) /home/couchbase/couchbase/ep-engine/src/locks.h:48 (ep.so+0x0000000821b2)\n5 HashTable::getLockedBucket(int, int*) /home/couchbase/couchbase/ep-engine/src/stored-value.h:1266 (ep.so+0x00000008418a)\n6 HashTable::getLockedBucket(std::string const\u0026, int*) /home/couchbase/couchbase/ep-engine/src/stored-value.h:1295 (ep.so+0x00000007df9b)\n7 EventuallyPersistentStore::setWithMeta(Item const\u0026, unsigned long, void const*, bool, bool, unsigned char, bool, bool) /home/couchbase/couchbase/ep-engine/src/ep.cc:1827 (ep.so+0x0000000e6b4f)\n8 PassiveStream::commitMutation(MutationResponse*, bool) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1369 (ep.so+0x00000029ba21)\n9 PassiveStream::processMutation(MutationResponse*) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1341 (ep.so+0x00000029a7a0)\n10 PassiveStream::processBufferedMessages(unsigned int\u0026) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1281 (ep.so+0x00000029a0f2)\n11 DcpConsumer::processBufferedItems() /home/couchbase/couchbase/ep-engine/src/dcp-consumer.cc:599 (ep.so+0x000000262a23)\n12 Processer::run() /home/couchbase/couchbase/ep-engine/src/dcp-consumer.cc:48 (ep.so+0x0000002625ff)\n13 ExecutorThread::run() /home/couchbase/couchbase/ep-engine/src/executorthread.cc:110 (ep.so+0x0000001e3dd9)\n14 launch_executor_thread(void*) /home/couchbase/couchbase/ep-engine/src/executorthread.cc:34 (ep.so+0x0000001e32ea)\n15 platform_thread_wrap /home/couchbase/couchbase/platform/src/cb_pthreads.c (libplatform.so.0.1.0+0x00000000362c)\n\nChange-Id: I6c7b1fadf76529a044341a4a9b6ed0ea829c4999\n"},"parents_data":[{"branch_name":"refs/heads/3.0.x","commit_id":"c2b0a683b56038753907495f6db684819cb81923","is_merged_in_target_branch":false,"change_id":"I5e5a3e2cc5ba9ae17090e1a3ee4bde100d305f1c","change_number":62498,"patch_set_number":2,"change_status":"MERGED"}],"branch":"refs/heads/3.0.x"},"3ac0426d621d05c7dd075741d19b2f7b5e924d4b":{"kind":"TRIVIAL_REBASE","_number":2,"created":"2016-04-07 18:34:59.000000000","uploader":{"_account_id":1000338,"name":"Abhi 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refs/changes/67/62567/2 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/2 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/2 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/67/62567/2","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/2 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"fa29ed61f3ce8c127e3ab113e23975091142482a","subject":"MB-19093 [BP]: [ActiveStream] Address potential lock-inversion scenarios"}],"author":{"name":"abhinavdangeti","email":"abhinav@couchbase.com","date":"2016-04-07 18:23:37.000000000","tz":-420},"committer":{"name":"abhinav dangeti","email":"abhinav@couchbase.com","date":"2016-04-07 18:34:59.000000000","tz":0},"subject":"MB-19113: Address lock inversion with snapshot lock and hash table lock","message":"MB-19113: Address lock inversion with snapshot lock and hash table lock\n\n[1m[31mWARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid\u003d5899)\n    [1m[0m  Cycle in lock order graph: [1m[35mM21372 (0x7d780000f510)[1m[0m \u003d\u003e [1m[35mM21408 (0x7d640000f920)[1m[0m \u003d\u003e [1m[35mM21372[1m[0m\n\n    Mutex [1m[35mM21408[1m[0m acquired here while holding mutex [1m[35mM21372[1m[0m in [1m[36mmain thread:\n    [1m[0m    #0 pthread_mutex_lock \u003cnull\u003e (engine_testapp+0x00000047e970)\n1 cb_mutex_enter \u003cnull\u003e (libplatform.so.0.1.0+0x000000003870)\n2 Mutex::acquire() /home/couchbase/couchbase/ep-engine/src/mutex.cc:31 (ep.so+0x0000001e287e)\n3 LockHolder::lock() /home/couchbase/couchbase/ep-engine/src/locks.h:71 (ep.so+0x000000082543)\n4 LockHolder::LockHolder(Mutex\u0026, bool) /home/couchbase/couchbase/ep-engine/src/locks.h:48 (ep.so+0x0000000821b2)\n5 VBucket::getSnapshotLock() /home/couchbase/couchbase/ep-engine/src/vbucket.h:212 (ep.so+0x000000104c72)\n6 EventuallyPersistentStore::queueDirty(RCPtr\u003cVBucket\u003e\u0026, StoredValue*, LockHolder*, bool, bool, bool) /home/couchbase/couchbase/ep-engine/src/ep.cc:2863 (ep.so+0x0000000d7123)\n7 EventuallyPersistentStore::set(Item const\u0026, void const*, bool, unsigned char) /home/couchbase/couchbase/ep-engine/src/ep.cc:683 (ep.so+0x0000000d9dfa)\n8 EventuallyPersistentEngine::store(void const*, void*, unsigned long*, ENGINE_STORE_OPERATION, unsigned short) /home/couchbase/couchbase/ep-engine/src/ep_engine.cc:2128 (ep.so+0x00000013d538)\n9 EvpStore(engine_interface*, void const*, void*, unsigned long*, ENGINE_STORE_OPERATION, unsigned short) /home/couchbase/couchbase/ep-engine/src/ep_engine.cc:229 (ep.so+0x00000013712d)\n10 mock_store /home/couchbase/couchbase/memcached/programs/engine_testapp/engine_testapp.c (engine_testapp+0x0000004c7304)\n11 storeCasVb11(engine_interface*, engine_interface_v1*, void const*, ENGINE_STORE_OPERATION, char const*, char const*, unsigned long, unsigned int, void**, unsigned long, unsigned short, unsigned int, unsigned char) /home/couchbase/couchbase/ep-engine/tests/ep_test_apis.cc:659 (ep_testsuite.so+0x0000000e8d17)\n12 store(engine_interface*, engine_interface_v1*, void const*, ENGINE_STORE_OPERATION, char const*, char const*, void**, unsigned long, unsigned short, unsigned int, unsigned char) /home/couchbase/couchbase/ep-engine/tests/ep_test_apis.cc:631 (ep_testsuite.so+0x0000000e654a)\n13 test_mb16357(engine_interface*, engine_interface_v1*) /home/couchbase/couchbase/ep-engine/tests/ep_testsuite.cc:11713 (ep_testsuite.so+0x0000000afc36)\n14 execute_test /home/couchbase/couchbase/memcached/programs/engine_testapp/engine_testapp.c (engine_testapp+0x0000004c4e2f)\n15 main crtstuff.c (engine_testapp+0x0000004c2d91)\n\n    Mutex [1m[35mM21372[1m[0m acquired here while holding mutex [1m[35mM21408[1m[0m in [1m[36mthread T10:\n    [1m[0m    #0 pthread_mutex_lock \u003cnull\u003e (engine_testapp+0x00000047e970)\n1 cb_mutex_enter \u003cnull\u003e (libplatform.so.0.1.0+0x000000003870)\n2 Mutex::acquire() /home/couchbase/couchbase/ep-engine/src/mutex.cc:31 (ep.so+0x0000001e287e)\n3 LockHolder::lock() /home/couchbase/couchbase/ep-engine/src/locks.h:71 (ep.so+0x000000082543)\n4 LockHolder::LockHolder(Mutex\u0026, bool) /home/couchbase/couchbase/ep-engine/src/locks.h:48 (ep.so+0x0000000821b2)\n5 HashTable::getLockedBucket(int, int*) /home/couchbase/couchbase/ep-engine/src/stored-value.h:1266 (ep.so+0x00000008418a)\n6 HashTable::getLockedBucket(std::string const\u0026, int*) /home/couchbase/couchbase/ep-engine/src/stored-value.h:1295 (ep.so+0x00000007df9b)\n7 EventuallyPersistentStore::setWithMeta(Item const\u0026, unsigned long, void const*, bool, bool, unsigned char, bool, bool) /home/couchbase/couchbase/ep-engine/src/ep.cc:1827 (ep.so+0x0000000e6b4f)\n8 PassiveStream::commitMutation(MutationResponse*, bool) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1369 (ep.so+0x00000029ba21)\n9 PassiveStream::processMutation(MutationResponse*) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1341 (ep.so+0x00000029a7a0)\n10 PassiveStream::processBufferedMessages(unsigned int\u0026) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1281 (ep.so+0x00000029a0f2)\n11 DcpConsumer::processBufferedItems() /home/couchbase/couchbase/ep-engine/src/dcp-consumer.cc:599 (ep.so+0x000000262a23)\n12 Processer::run() /home/couchbase/couchbase/ep-engine/src/dcp-consumer.cc:48 (ep.so+0x0000002625ff)\n13 ExecutorThread::run() /home/couchbase/couchbase/ep-engine/src/executorthread.cc:110 (ep.so+0x0000001e3dd9)\n14 launch_executor_thread(void*) /home/couchbase/couchbase/ep-engine/src/executorthread.cc:34 (ep.so+0x0000001e32ea)\n15 platform_thread_wrap /home/couchbase/couchbase/platform/src/cb_pthreads.c (libplatform.so.0.1.0+0x00000000362c)\n\nChange-Id: I6c7b1fadf76529a044341a4a9b6ed0ea829c4999\n"},"parents_data":[{"branch_name":"refs/heads/3.0.x","commit_id":"fa29ed61f3ce8c127e3ab113e23975091142482a","is_merged_in_target_branch":false,"change_id":"I5e5a3e2cc5ba9ae17090e1a3ee4bde100d305f1c","change_number":62498,"patch_set_number":3,"change_status":"MERGED"}],"branch":"refs/heads/3.0.x"},"c7c00656499004c4545c9fb41b0def5212a4ec4b":{"kind":"REWORK","_number":3,"created":"2016-04-08 02:55:14.000000000","uploader":{"_account_id":1000338,"name":"Abhi Dangeti","email":"abhinav@couchbase.com","username":"abhinavdangeti","avatars":[{"url":"https://www.gravatar.com/avatar/9007099855b1bf7d96e9c1a10bc9542e.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/9007099855b1bf7d96e9c1a10bc9542e.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/9007099855b1bf7d96e9c1a10bc9542e.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/9007099855b1bf7d96e9c1a10bc9542e.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"ref":"refs/changes/67/62567/3","fetch":{"anonymous http":{"url":"https://review.couchbase.org/ep-engine","ref":"refs/changes/67/62567/3","commands":{"Branch":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/3 \u0026\u0026 git checkout -b change-62567 FETCH_HEAD","Checkout":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/3 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/3 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/3 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/67/62567/3","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/3 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"771859f815f3067ece19edbe588c2c852e100998","subject":"MB-19093 [BP]: [ActiveStream] Address potential lock-inversion scenarios"}],"author":{"name":"abhinavdangeti","email":"abhinav@couchbase.com","date":"2016-04-08 02:51:50.000000000","tz":-420},"committer":{"name":"abhinavdangeti","email":"abhinav@couchbase.com","date":"2016-04-08 02:51:50.000000000","tz":-420},"subject":"MB-19113: Address lock inversion with snapshot lock and hash table lock","message":"MB-19113: Address lock inversion with snapshot lock and hash table lock\n\n[1m[31mWARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid\u003d5899)\n    [1m[0m  Cycle in lock order graph: [1m[35mM21372 (0x7d780000f510)[1m[0m \u003d\u003e [1m[35mM21408 (0x7d640000f920)[1m[0m \u003d\u003e [1m[35mM21372[1m[0m\n\n    Mutex [1m[35mM21408[1m[0m acquired here while holding mutex [1m[35mM21372[1m[0m in [1m[36mmain thread:\n    [1m[0m    0 pthread_mutex_lock \u003cnull\u003e (engine_testapp+0x00000047e970)\n              1 cb_mutex_enter \u003cnull\u003e (libplatform.so.0.1.0+0x000000003870)\n              2 Mutex::acquire() /home/couchbase/couchbase/ep-engine/src/mutex.cc:31 (ep.so+0x0000001e287e)\n              3 LockHolder::lock() /home/couchbase/couchbase/ep-engine/src/locks.h:71 (ep.so+0x000000082543)\n              4 LockHolder::LockHolder(Mutex\u0026, bool) /home/couchbase/couchbase/ep-engine/src/locks.h:48 (ep.so+0x0000000821b2)\n              5 VBucket::getSnapshotLock() /home/couchbase/couchbase/ep-engine/src/vbucket.h:212 (ep.so+0x000000104c72)\n              6 EventuallyPersistentStore::queueDirty(RCPtr\u003cVBucket\u003e\u0026, StoredValue*, LockHolder*, bool, bool, bool) /home/couchbase/couchbase/ep-engine/src/ep.cc:2863 (ep.so+0x0000000d7123)\n              7 EventuallyPersistentStore::set(Item const\u0026, void const*, bool, unsigned char) /home/couchbase/couchbase/ep-engine/src/ep.cc:683 (ep.so+0x0000000d9dfa)\n              8 EventuallyPersistentEngine::store(void const*, void*, unsigned long*, ENGINE_STORE_OPERATION, unsigned short) /home/couchbase/couchbase/ep-engine/src/ep_engine.cc:2128 (ep.so+0x00000013d538)\n              9 EvpStore(engine_interface*, void const*, void*, unsigned long*, ENGINE_STORE_OPERATION, unsigned short) /home/couchbase/couchbase/ep-engine/src/ep_engine.cc:229 (ep.so+0x00000013712d)\n              10 mock_store /home/couchbase/couchbase/memcached/programs/engine_testapp/engine_testapp.c (engine_testapp+0x0000004c7304)\n              11 storeCasVb11(engine_interface*, engine_interface_v1*, void const*, ENGINE_STORE_OPERATION, char const*, char const*, unsigned long, unsigned int, void**, unsigned long, unsigned short, unsigned int, unsigned char) /home/couchbase/couchbase/ep-engine/tests/ep_test_apis.cc:659 (ep_testsuite.so+0x0000000e8d17)\n              12 store(engine_interface*, engine_interface_v1*, void const*, ENGINE_STORE_OPERATION, char const*, char const*, void**, unsigned long, unsigned short, unsigned int, unsigned char) /home/couchbase/couchbase/ep-engine/tests/ep_test_apis.cc:631 (ep_testsuite.so+0x0000000e654a)\n              13 test_mb16357(engine_interface*, engine_interface_v1*) /home/couchbase/couchbase/ep-engine/tests/ep_testsuite.cc:11713 (ep_testsuite.so+0x0000000afc36)\n              14 execute_test /home/couchbase/couchbase/memcached/programs/engine_testapp/engine_testapp.c (engine_testapp+0x0000004c4e2f)\n              15 main crtstuff.c (engine_testapp+0x0000004c2d91)\n\n    Mutex [1m[35mM21372[1m[0m acquired here while holding mutex [1m[35mM21408[1m[0m in [1m[36mthread T10:\n    [1m[0m    0 pthread_mutex_lock \u003cnull\u003e (engine_testapp+0x00000047e970)\n              1 cb_mutex_enter \u003cnull\u003e (libplatform.so.0.1.0+0x000000003870)\n              2 Mutex::acquire() /home/couchbase/couchbase/ep-engine/src/mutex.cc:31 (ep.so+0x0000001e287e)\n              3 LockHolder::lock() /home/couchbase/couchbase/ep-engine/src/locks.h:71 (ep.so+0x000000082543)\n              4 LockHolder::LockHolder(Mutex\u0026, bool) /home/couchbase/couchbase/ep-engine/src/locks.h:48 (ep.so+0x0000000821b2)\n              5 HashTable::getLockedBucket(int, int*) /home/couchbase/couchbase/ep-engine/src/stored-value.h:1266 (ep.so+0x00000008418a)\n              6 HashTable::getLockedBucket(std::string const\u0026, int*) /home/couchbase/couchbase/ep-engine/src/stored-value.h:1295 (ep.so+0x00000007df9b)\n              7 EventuallyPersistentStore::setWithMeta(Item const\u0026, unsigned long, void const*, bool, bool, unsigned char, bool, bool) /home/couchbase/couchbase/ep-engine/src/ep.cc:1827 (ep.so+0x0000000e6b4f)\n              8 PassiveStream::commitMutation(MutationResponse*, bool) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1369 (ep.so+0x00000029ba21)\n              9 PassiveStream::processMutation(MutationResponse*) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1341 (ep.so+0x00000029a7a0)\n              10 PassiveStream::processBufferedMessages(unsigned int\u0026) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1281 (ep.so+0x00000029a0f2)\n              11 DcpConsumer::processBufferedItems() /home/couchbase/couchbase/ep-engine/src/dcp-consumer.cc:599 (ep.so+0x000000262a23)\n              12 Processer::run() /home/couchbase/couchbase/ep-engine/src/dcp-consumer.cc:48 (ep.so+0x0000002625ff)\n              13 ExecutorThread::run() /home/couchbase/couchbase/ep-engine/src/executorthread.cc:110 (ep.so+0x0000001e3dd9)\n              14 launch_executor_thread(void*) /home/couchbase/couchbase/ep-engine/src/executorthread.cc:34 (ep.so+0x0000001e32ea)\n              15 platform_thread_wrap /home/couchbase/couchbase/platform/src/cb_pthreads.c (libplatform.so.0.1.0+0x00000000362c)\n\nChange-Id: I6c7b1fadf76529a044341a4a9b6ed0ea829c4999\n"},"parents_data":[{"branch_name":"refs/heads/3.0.x","commit_id":"771859f815f3067ece19edbe588c2c852e100998","is_merged_in_target_branch":true,"change_id":"I5e5a3e2cc5ba9ae17090e1a3ee4bde100d305f1c","change_number":62498,"patch_set_number":4,"change_status":"MERGED"}],"branch":"refs/heads/3.0.x"},"28d479cae5a8be55885705232356a328782f9df1":{"kind":"NO_CODE_CHANGE","_number":4,"created":"2016-04-08 07:47:37.000000000","uploader":{"_account_id":1000966,"name":"Dave Rigby","email":"daver@couchbase.com","username":"drigby","avatars":[{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/514e75a8d75cc1fcdb22433d445ae8f1.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"ref":"refs/changes/67/62567/4","fetch":{"anonymous http":{"url":"https://review.couchbase.org/ep-engine","ref":"refs/changes/67/62567/4","commands":{"Branch":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/4 \u0026\u0026 git checkout -b change-62567 FETCH_HEAD","Checkout":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/4 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/4 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/4 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/67/62567/4","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/4 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"771859f815f3067ece19edbe588c2c852e100998","subject":"MB-19093 [BP]: [ActiveStream] Address potential lock-inversion scenarios"}],"author":{"name":"abhinavdangeti","email":"abhinav@couchbase.com","date":"2016-04-08 02:51:50.000000000","tz":-420},"committer":{"name":"Dave Rigby","email":"daver@couchbase.com","date":"2016-04-08 07:47:37.000000000","tz":0},"subject":"MB-19113: Address lock inversion with snapshot lock and hash table lock","message":"MB-19113: Address lock inversion with snapshot lock and hash table lock\n\nWARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid\u003d5899)\n  Cycle in lock order graph: M21372 (0x7d780000f510) \u003d\u003e M21408 (0x7d640000f920) \u003d\u003e M21372\n\n  Mutex M21408 acquired here while holding mutex M21372 in main thread:\n    #0 pthread_mutex_lock \u003cnull\u003e (engine_testapp+0x00000047e970)\n    #1 cb_mutex_enter \u003cnull\u003e (libplatform.so.0.1.0+0x000000003870)\n    #2 Mutex::acquire() /home/couchbase/couchbase/ep-engine/src/mutex.cc:31 (ep.so+0x0000001e287e)\n    #3 LockHolder::lock() /home/couchbase/couchbase/ep-engine/src/locks.h:71 (ep.so+0x000000082543)\n    #4 LockHolder::LockHolder(Mutex\u0026, bool) /home/couchbase/couchbase/ep-engine/src/locks.h:48 (ep.so+0x0000000821b2)\n    #5 VBucket::getSnapshotLock() /home/couchbase/couchbase/ep-engine/src/vbucket.h:212 (ep.so+0x000000104c72)\n    #6 EventuallyPersistentStore::queueDirty(RCPtr\u003cVBucket\u003e\u0026, StoredValue*, LockHolder*, bool, bool, bool) /home/couchbase/couchbase/ep-engine/src/ep.cc:2863 (ep.so+0x0000000d7123)\n    #7 EventuallyPersistentStore::set(Item const\u0026, void const*, bool, unsigned char) /home/couchbase/couchbase/ep-engine/src/ep.cc:683 (ep.so+0x0000000d9dfa)\n    #8 EventuallyPersistentEngine::store(void const*, void*, unsigned long*, ENGINE_STORE_OPERATION, unsigned short) /home/couchbase/couchbase/ep-engine/src/ep_engine.cc:2128 (ep.so+0x00000013d538)\n    #9 EvpStore(engine_interface*, void const*, void*, unsigned long*, ENGINE_STORE_OPERATION, unsigned short) /home/couchbase/couchbase/ep-engine/src/ep_engine.cc:229 (ep.so+0x00000013712d)\n    #10 mock_store /home/couchbase/couchbase/memcached/programs/engine_testapp/engine_testapp.c (engine_testapp+0x0000004c7304)\n    #11 storeCasVb11(engine_interface*, engine_interface_v1*, void const*, ENGINE_STORE_OPERATION, char const*, char const*, unsigned long, unsigned int, void**, unsigned long, unsigned short, unsigned int, unsigned char) /home/couchbase/couchbase/ep-engine/tests/ep_test_apis.cc:659 (ep_testsuite.so+0x0000000e8d17)\n    #12 store(engine_interface*, engine_interface_v1*, void const*, ENGINE_STORE_OPERATION, char const*, char const*, void**, unsigned long, unsigned short, unsigned int, unsigned char) /home/couchbase/couchbase/ep-engine/tests/ep_test_apis.cc:631 (ep_testsuite.so+0x0000000e654a)\n    #13 test_mb16357(engine_interface*, engine_interface_v1*) /home/couchbase/couchbase/ep-engine/tests/ep_testsuite.cc:11713 (ep_testsuite.so+0x0000000afc36)\n    #14 execute_test /home/couchbase/couchbase/memcached/programs/engine_testapp/engine_testapp.c (engine_testapp+0x0000004c4e2f)\n    #15 main crtstuff.c (engine_testapp+0x0000004c2d91)\n\n  Mutex M21372 acquired here while holding mutex M21408 in thread T10:\n    #0 pthread_mutex_lock \u003cnull\u003e (engine_testapp+0x00000047e970)\n    #1 cb_mutex_enter \u003cnull\u003e (libplatform.so.0.1.0+0x000000003870)\n    #2 Mutex::acquire() /home/couchbase/couchbase/ep-engine/src/mutex.cc:31 (ep.so+0x0000001e287e)\n    #3 LockHolder::lock() /home/couchbase/couchbase/ep-engine/src/locks.h:71 (ep.so+0x000000082543)\n    #4 LockHolder::LockHolder(Mutex\u0026, bool) /home/couchbase/couchbase/ep-engine/src/locks.h:48 (ep.so+0x0000000821b2)\n    #5 HashTable::getLockedBucket(int, int*) /home/couchbase/couchbase/ep-engine/src/stored-value.h:1266 (ep.so+0x00000008418a)\n    #6 HashTable::getLockedBucket(std::string const\u0026, int*) /home/couchbase/couchbase/ep-engine/src/stored-value.h:1295 (ep.so+0x00000007df9b)\n    #7 EventuallyPersistentStore::setWithMeta(Item const\u0026, unsigned long, void const*, bool, bool, unsigned char, bool, bool) /home/couchbase/couchbase/ep-engine/src/ep.cc:1827 (ep.so+0x0000000e6b4f)\n    #8 PassiveStream::commitMutation(MutationResponse*, bool) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1369 (ep.so+0x00000029ba21)\n    #9 PassiveStream::processMutation(MutationResponse*) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1341 (ep.so+0x00000029a7a0)\n    #10 PassiveStream::processBufferedMessages(unsigned int\u0026) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1281 (ep.so+0x00000029a0f2)\n    #11 DcpConsumer::processBufferedItems() /home/couchbase/couchbase/ep-engine/src/dcp-consumer.cc:599 (ep.so+0x000000262a23)\n    #12 Processer::run() /home/couchbase/couchbase/ep-engine/src/dcp-consumer.cc:48 (ep.so+0x0000002625ff)\n    #13 ExecutorThread::run() /home/couchbase/couchbase/ep-engine/src/executorthread.cc:110 (ep.so+0x0000001e3dd9)\n    #14 launch_executor_thread(void*) /home/couchbase/couchbase/ep-engine/src/executorthread.cc:34 (ep.so+0x0000001e32ea)\n    #15 platform_thread_wrap /home/couchbase/couchbase/platform/src/cb_pthreads.c (libplatform.so.0.1.0+0x00000000362c)\n\nChange-Id: I6c7b1fadf76529a044341a4a9b6ed0ea829c4999"},"parents_data":[{"branch_name":"refs/heads/3.0.x","commit_id":"771859f815f3067ece19edbe588c2c852e100998","is_merged_in_target_branch":true,"change_id":"I5e5a3e2cc5ba9ae17090e1a3ee4bde100d305f1c","change_number":62498,"patch_set_number":4,"change_status":"MERGED"}],"branch":"refs/heads/3.0.x"},"37b22092e07acfc64a4026e038a916d9d9ec5357":{"kind":"REWORK","_number":5,"created":"2016-04-08 18:58:45.000000000","uploader":{"_account_id":1000338,"name":"Abhi Dangeti","email":"abhinav@couchbase.com","username":"abhinavdangeti","avatars":[{"url":"https://www.gravatar.com/avatar/9007099855b1bf7d96e9c1a10bc9542e.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/9007099855b1bf7d96e9c1a10bc9542e.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/9007099855b1bf7d96e9c1a10bc9542e.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/9007099855b1bf7d96e9c1a10bc9542e.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"ref":"refs/changes/67/62567/5","fetch":{"anonymous http":{"url":"https://review.couchbase.org/ep-engine","ref":"refs/changes/67/62567/5","commands":{"Branch":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/5 \u0026\u0026 git checkout -b change-62567 FETCH_HEAD","Checkout":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/5 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/5 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/5 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/67/62567/5","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/5 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"771859f815f3067ece19edbe588c2c852e100998","subject":"MB-19093 [BP]: [ActiveStream] Address potential lock-inversion scenarios"}],"author":{"name":"abhinavdangeti","email":"abhinav@couchbase.com","date":"2016-04-07 18:23:37.000000000","tz":-420},"committer":{"name":"abhinavdangeti","email":"abhinav@couchbase.com","date":"2016-04-08 18:56:37.000000000","tz":-420},"subject":"MB-19113: Address lock inversion with snapshot lock and hash table lock","message":"MB-19113: Address lock inversion with snapshot lock and hash table lock\n\nWARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid\u003d5899)\n  Cycle in lock order graph: M21372 (0x7d780000f510) \u003d\u003e M21408 (0x7d640000f920) \u003d\u003e M21372\n\n  Mutex M21408 acquired here while holding mutex M21372 in main thread:\n    #0 pthread_mutex_lock \u003cnull\u003e (engine_testapp+0x00000047e970)\n    #1 cb_mutex_enter \u003cnull\u003e (libplatform.so.0.1.0+0x000000003870)\n    #2 Mutex::acquire() /home/couchbase/couchbase/ep-engine/src/mutex.cc:31 (ep.so+0x0000001e287e)\n    #3 LockHolder::lock() /home/couchbase/couchbase/ep-engine/src/locks.h:71 (ep.so+0x000000082543)\n    #4 LockHolder::LockHolder(Mutex\u0026, bool) /home/couchbase/couchbase/ep-engine/src/locks.h:48 (ep.so+0x0000000821b2)\n    #5 VBucket::getSnapshotLock() /home/couchbase/couchbase/ep-engine/src/vbucket.h:212 (ep.so+0x000000104c72)\n    #6 EventuallyPersistentStore::queueDirty(RCPtr\u003cVBucket\u003e\u0026, StoredValue*, LockHolder*, bool, bool, bool) /home/couchbase/couchbase/ep-engine/src/ep.cc:2863 (ep.so+0x0000000d7123)\n    #7 EventuallyPersistentStore::set(Item const\u0026, void const*, bool, unsigned char) /home/couchbase/couchbase/ep-engine/src/ep.cc:683 (ep.so+0x0000000d9dfa)\n    #8 EventuallyPersistentEngine::store(void const*, void*, unsigned long*, ENGINE_STORE_OPERATION, unsigned short) /home/couchbase/couchbase/ep-engine/src/ep_engine.cc:2128 (ep.so+0x00000013d538)\n    #9 EvpStore(engine_interface*, void const*, void*, unsigned long*, ENGINE_STORE_OPERATION, unsigned short) /home/couchbase/couchbase/ep-engine/src/ep_engine.cc:229 (ep.so+0x00000013712d)\n    #10 mock_store /home/couchbase/couchbase/memcached/programs/engine_testapp/engine_testapp.c (engine_testapp+0x0000004c7304)\n    #11 storeCasVb11(engine_interface*, engine_interface_v1*, void const*, ENGINE_STORE_OPERATION, char const*, char const*, unsigned long, unsigned int, void**, unsigned long, unsigned short, unsigned int, unsigned char) /home/couchbase/couchbase/ep-engine/tests/ep_test_apis.cc:659 (ep_testsuite.so+0x0000000e8d17)\n    #12 store(engine_interface*, engine_interface_v1*, void const*, ENGINE_STORE_OPERATION, char const*, char const*, void**, unsigned long, unsigned short, unsigned int, unsigned char) /home/couchbase/couchbase/ep-engine/tests/ep_test_apis.cc:631 (ep_testsuite.so+0x0000000e654a)\n    #13 test_mb16357(engine_interface*, engine_interface_v1*) /home/couchbase/couchbase/ep-engine/tests/ep_testsuite.cc:11713 (ep_testsuite.so+0x0000000afc36)\n    #14 execute_test /home/couchbase/couchbase/memcached/programs/engine_testapp/engine_testapp.c (engine_testapp+0x0000004c4e2f)\n    #15 main crtstuff.c (engine_testapp+0x0000004c2d91)\n\n  Mutex M21372 acquired here while holding mutex M21408 in thread T10:\n    #0 pthread_mutex_lock \u003cnull\u003e (engine_testapp+0x00000047e970)\n    #1 cb_mutex_enter \u003cnull\u003e (libplatform.so.0.1.0+0x000000003870)\n    #2 Mutex::acquire() /home/couchbase/couchbase/ep-engine/src/mutex.cc:31 (ep.so+0x0000001e287e)\n    #3 LockHolder::lock() /home/couchbase/couchbase/ep-engine/src/locks.h:71 (ep.so+0x000000082543)\n    #4 LockHolder::LockHolder(Mutex\u0026, bool) /home/couchbase/couchbase/ep-engine/src/locks.h:48 (ep.so+0x0000000821b2)\n    #5 HashTable::getLockedBucket(int, int*) /home/couchbase/couchbase/ep-engine/src/stored-value.h:1266 (ep.so+0x00000008418a)\n    #6 HashTable::getLockedBucket(std::string const\u0026, int*) /home/couchbase/couchbase/ep-engine/src/stored-value.h:1295 (ep.so+0x00000007df9b)\n    #7 EventuallyPersistentStore::setWithMeta(Item const\u0026, unsigned long, void const*, bool, bool, unsigned char, bool, bool) /home/couchbase/couchbase/ep-engine/src/ep.cc:1827 (ep.so+0x0000000e6b4f)\n    #8 PassiveStream::commitMutation(MutationResponse*, bool) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1369 (ep.so+0x00000029ba21)\n    #9 PassiveStream::processMutation(MutationResponse*) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1341 (ep.so+0x00000029a7a0)\n    #10 PassiveStream::processBufferedMessages(unsigned int\u0026) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1281 (ep.so+0x00000029a0f2)\n    #11 DcpConsumer::processBufferedItems() /home/couchbase/couchbase/ep-engine/src/dcp-consumer.cc:599 (ep.so+0x000000262a23)\n    #12 Processer::run() /home/couchbase/couchbase/ep-engine/src/dcp-consumer.cc:48 (ep.so+0x0000002625ff)\n    #13 ExecutorThread::run() /home/couchbase/couchbase/ep-engine/src/executorthread.cc:110 (ep.so+0x0000001e3dd9)\n    #14 launch_executor_thread(void*) /home/couchbase/couchbase/ep-engine/src/executorthread.cc:34 (ep.so+0x0000001e32ea)\n    #15 platform_thread_wrap /home/couchbase/couchbase/platform/src/cb_pthreads.c (libplatform.so.0.1.0+0x00000000362c)\n\nChange-Id: I6c7b1fadf76529a044341a4a9b6ed0ea829c4999\n"},"parents_data":[{"branch_name":"refs/heads/3.0.x","commit_id":"771859f815f3067ece19edbe588c2c852e100998","is_merged_in_target_branch":true,"change_id":"I5e5a3e2cc5ba9ae17090e1a3ee4bde100d305f1c","change_number":62498,"patch_set_number":4,"change_status":"MERGED"}],"branch":"refs/heads/3.0.x"},"b3591a64ec448a3532d4fa2492a628457f61a637":{"kind":"REWORK","_number":6,"created":"2016-04-08 21:05:13.000000000","uploader":{"_account_id":1000338,"name":"Abhi Dangeti","email":"abhinav@couchbase.com","username":"abhinavdangeti","avatars":[{"url":"https://www.gravatar.com/avatar/9007099855b1bf7d96e9c1a10bc9542e.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/9007099855b1bf7d96e9c1a10bc9542e.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/9007099855b1bf7d96e9c1a10bc9542e.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/9007099855b1bf7d96e9c1a10bc9542e.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"ref":"refs/changes/67/62567/6","fetch":{"anonymous http":{"url":"https://review.couchbase.org/ep-engine","ref":"refs/changes/67/62567/6","commands":{"Branch":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/6 \u0026\u0026 git checkout -b change-62567 FETCH_HEAD","Checkout":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/6 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/6 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/6 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/67/62567/6","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/6 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"771859f815f3067ece19edbe588c2c852e100998","subject":"MB-19093 [BP]: [ActiveStream] Address potential lock-inversion scenarios"}],"author":{"name":"abhinavdangeti","email":"abhinav@couchbase.com","date":"2016-04-08 20:57:42.000000000","tz":-420},"committer":{"name":"abhinavdangeti","email":"abhinav@couchbase.com","date":"2016-04-08 20:57:42.000000000","tz":-420},"subject":"MB-19113: Address false positive lock inversion seen with test_mb16357","message":"MB-19113: Address false positive lock inversion seen with test_mb16357\n\nThe inversion being pointed out by this test case is between the snapshot\nlock and the hash table lock and this scenario would never happen\nduring regular operation, this is because the first thread points out\nthat the vbucket is active while the second indicates that the vbucket\nis replica. These 2 operations can never occur simulataneously.\n\nThreadSanitizer assumes that this is a lock inversion because the 2\noperations are done by different threads (main_thread and dcp_thread).\n\nThe fix here suppresses this thread sanitizer warning by getting rid of\nthe dcp_thread, and instead have the main_thread perform the activity\nthat the dcp thread is responsible for.\n\nWARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid\u003d5899)\n  Cycle in lock order graph: M21372 (0x7d780000f510) \u003d\u003e M21408 (0x7d640000f920) \u003d\u003e M21372\n\n  Mutex M21408 acquired here while holding mutex M21372 in main thread:\n    #0 pthread_mutex_lock \u003cnull\u003e (engine_testapp+0x00000047e970)\n    #1 cb_mutex_enter \u003cnull\u003e (libplatform.so.0.1.0+0x000000003870)\n    #2 Mutex::acquire() /home/couchbase/couchbase/ep-engine/src/mutex.cc:31 (ep.so+0x0000001e287e)\n    #3 LockHolder::lock() /home/couchbase/couchbase/ep-engine/src/locks.h:71 (ep.so+0x000000082543)\n    #4 LockHolder::LockHolder(Mutex\u0026, bool) /home/couchbase/couchbase/ep-engine/src/locks.h:48 (ep.so+0x0000000821b2)\n    #5 VBucket::getSnapshotLock() /home/couchbase/couchbase/ep-engine/src/vbucket.h:212 (ep.so+0x000000104c72)\n    #6 EventuallyPersistentStore::queueDirty(RCPtr\u003cVBucket\u003e\u0026, StoredValue*, LockHolder*, bool, bool, bool) /home/couchbase/couchbase/ep-engine/src/ep.cc:2863 (ep.so+0x0000000d7123)\n    #7 EventuallyPersistentStore::set(Item const\u0026, void const*, bool, unsigned char) /home/couchbase/couchbase/ep-engine/src/ep.cc:683 (ep.so+0x0000000d9dfa)\n    #8 EventuallyPersistentEngine::store(void const*, void*, unsigned long*, ENGINE_STORE_OPERATION, unsigned short) /home/couchbase/couchbase/ep-engine/src/ep_engine.cc:2128 (ep.so+0x00000013d538)\n    #9 EvpStore(engine_interface*, void const*, void*, unsigned long*, ENGINE_STORE_OPERATION, unsigned short) /home/couchbase/couchbase/ep-engine/src/ep_engine.cc:229 (ep.so+0x00000013712d)\n    #10 mock_store /home/couchbase/couchbase/memcached/programs/engine_testapp/engine_testapp.c (engine_testapp+0x0000004c7304)\n    #11 storeCasVb11(engine_interface*, engine_interface_v1*, void const*, ENGINE_STORE_OPERATION, char const*, char const*, unsigned long, unsigned int, void**, unsigned long, unsigned short, unsigned int, unsigned char) /home/couchbase/couchbase/ep-engine/tests/ep_test_apis.cc:659 (ep_testsuite.so+0x0000000e8d17)\n    #12 store(engine_interface*, engine_interface_v1*, void const*, ENGINE_STORE_OPERATION, char const*, char const*, void**, unsigned long, unsigned short, unsigned int, unsigned char) /home/couchbase/couchbase/ep-engine/tests/ep_test_apis.cc:631 (ep_testsuite.so+0x0000000e654a)\n    #13 test_mb16357(engine_interface*, engine_interface_v1*) /home/couchbase/couchbase/ep-engine/tests/ep_testsuite.cc:11713 (ep_testsuite.so+0x0000000afc36)\n    #14 execute_test /home/couchbase/couchbase/memcached/programs/engine_testapp/engine_testapp.c (engine_testapp+0x0000004c4e2f)\n    #15 main crtstuff.c (engine_testapp+0x0000004c2d91)\n\n  Mutex M21372 acquired here while holding mutex M21408 in thread T10:\n    #0 pthread_mutex_lock \u003cnull\u003e (engine_testapp+0x00000047e970)\n    #1 cb_mutex_enter \u003cnull\u003e (libplatform.so.0.1.0+0x000000003870)\n    #2 Mutex::acquire() /home/couchbase/couchbase/ep-engine/src/mutex.cc:31 (ep.so+0x0000001e287e)\n    #3 LockHolder::lock() /home/couchbase/couchbase/ep-engine/src/locks.h:71 (ep.so+0x000000082543)\n    #4 LockHolder::LockHolder(Mutex\u0026, bool) /home/couchbase/couchbase/ep-engine/src/locks.h:48 (ep.so+0x0000000821b2)\n    #5 HashTable::getLockedBucket(int, int*) /home/couchbase/couchbase/ep-engine/src/stored-value.h:1266 (ep.so+0x00000008418a)\n    #6 HashTable::getLockedBucket(std::string const\u0026, int*) /home/couchbase/couchbase/ep-engine/src/stored-value.h:1295 (ep.so+0x00000007df9b)\n    #7 EventuallyPersistentStore::setWithMeta(Item const\u0026, unsigned long, void const*, bool, bool, unsigned char, bool, bool) /home/couchbase/couchbase/ep-engine/src/ep.cc:1827 (ep.so+0x0000000e6b4f)\n    #8 PassiveStream::commitMutation(MutationResponse*, bool) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1369 (ep.so+0x00000029ba21)\n    #9 PassiveStream::processMutation(MutationResponse*) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1341 (ep.so+0x00000029a7a0)\n    #10 PassiveStream::processBufferedMessages(unsigned int\u0026) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1281 (ep.so+0x00000029a0f2)\n    #11 DcpConsumer::processBufferedItems() /home/couchbase/couchbase/ep-engine/src/dcp-consumer.cc:599 (ep.so+0x000000262a23)\n    #12 Processer::run() /home/couchbase/couchbase/ep-engine/src/dcp-consumer.cc:48 (ep.so+0x0000002625ff)\n    #13 ExecutorThread::run() /home/couchbase/couchbase/ep-engine/src/executorthread.cc:110 (ep.so+0x0000001e3dd9)\n    #14 launch_executor_thread(void*) /home/couchbase/couchbase/ep-engine/src/executorthread.cc:34 (ep.so+0x0000001e32ea)\n    #15 platform_thread_wrap /home/couchbase/couchbase/platform/src/cb_pthreads.c (libplatform.so.0.1.0+0x00000000362c)\n\nChange-Id: I6c7b1fadf76529a044341a4a9b6ed0ea829c4999\n"},"parents_data":[{"branch_name":"refs/heads/3.0.x","commit_id":"771859f815f3067ece19edbe588c2c852e100998","is_merged_in_target_branch":true,"change_id":"I5e5a3e2cc5ba9ae17090e1a3ee4bde100d305f1c","change_number":62498,"patch_set_number":4,"change_status":"MERGED"}],"branch":"refs/heads/3.0.x"},"6e38fe8891e4e63996cecaa55b0e23accaf6f83b":{"kind":"NO_CODE_CHANGE","_number":7,"created":"2016-04-11 17:11:47.000000000","uploader":{"_account_id":1000097,"name":"Chiyoung Seo","email":"chiyoung@northscale.com","username":"chiyoung","avatars":[{"url":"https://www.gravatar.com/avatar/ec517f4126dd292151b452ce4d1edf31.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d32","height":32},{"url":"https://www.gravatar.com/avatar/ec517f4126dd292151b452ce4d1edf31.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d56","height":56},{"url":"https://www.gravatar.com/avatar/ec517f4126dd292151b452ce4d1edf31.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d100","height":100},{"url":"https://www.gravatar.com/avatar/ec517f4126dd292151b452ce4d1edf31.jpg?d\u003didenticon\u0026r\u003dpg\u0026s\u003d120","height":120}]},"ref":"refs/changes/67/62567/7","fetch":{"anonymous http":{"url":"https://review.couchbase.org/ep-engine","ref":"refs/changes/67/62567/7","commands":{"Branch":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/7 \u0026\u0026 git checkout -b change-62567 FETCH_HEAD","Checkout":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/7 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/7 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/7 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/67/62567/7","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/67/62567/7 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"771859f815f3067ece19edbe588c2c852e100998","subject":"MB-19093 [BP]: [ActiveStream] Address potential lock-inversion scenarios"}],"author":{"name":"abhinavdangeti","email":"abhinav@couchbase.com","date":"2016-04-08 20:57:42.000000000","tz":-420},"committer":{"name":"Chiyoung Seo","email":"chiyoung@couchbase.com","date":"2016-04-11 17:11:47.000000000","tz":0},"subject":"MB-19113: Address false positive lock inversion seen with test_mb16357","message":"MB-19113: Address false positive lock inversion seen with test_mb16357\n\nThe inversion being pointed out by this test case is between the snapshot\nlock and the hash table lock and this scenario would never happen\nduring regular operation, this is because the first thread points out\nthat the vbucket is active while the second indicates that the vbucket\nis replica. These 2 operations can never occur simulataneously.\n\nThreadSanitizer assumes that this is a lock inversion because the 2\noperations are done by different threads (main_thread and dcp_thread).\n\nThe fix here suppresses this thread sanitizer warning by getting rid of\nthe dcp_thread, and instead have the main_thread perform the activity\nthat the dcp thread is responsible for.\n\nWARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid\u003d5899)\n  Cycle in lock order graph: M21372 (0x7d780000f510) \u003d\u003e M21408 (0x7d640000f920) \u003d\u003e M21372\n\n  Mutex M21408 acquired here while holding mutex M21372 in main thread:\n    #0 pthread_mutex_lock \u003cnull\u003e (engine_testapp+0x00000047e970)\n    #1 cb_mutex_enter \u003cnull\u003e (libplatform.so.0.1.0+0x000000003870)\n    #2 Mutex::acquire() /home/couchbase/couchbase/ep-engine/src/mutex.cc:31 (ep.so+0x0000001e287e)\n    #3 LockHolder::lock() /home/couchbase/couchbase/ep-engine/src/locks.h:71 (ep.so+0x000000082543)\n    #4 LockHolder::LockHolder(Mutex\u0026, bool) /home/couchbase/couchbase/ep-engine/src/locks.h:48 (ep.so+0x0000000821b2)\n    #5 VBucket::getSnapshotLock() /home/couchbase/couchbase/ep-engine/src/vbucket.h:212 (ep.so+0x000000104c72)\n    #6 EventuallyPersistentStore::queueDirty(RCPtr\u003cVBucket\u003e\u0026, StoredValue*, LockHolder*, bool, bool, bool) /home/couchbase/couchbase/ep-engine/src/ep.cc:2863 (ep.so+0x0000000d7123)\n    #7 EventuallyPersistentStore::set(Item const\u0026, void const*, bool, unsigned char) /home/couchbase/couchbase/ep-engine/src/ep.cc:683 (ep.so+0x0000000d9dfa)\n    #8 EventuallyPersistentEngine::store(void const*, void*, unsigned long*, ENGINE_STORE_OPERATION, unsigned short) /home/couchbase/couchbase/ep-engine/src/ep_engine.cc:2128 (ep.so+0x00000013d538)\n    #9 EvpStore(engine_interface*, void const*, void*, unsigned long*, ENGINE_STORE_OPERATION, unsigned short) /home/couchbase/couchbase/ep-engine/src/ep_engine.cc:229 (ep.so+0x00000013712d)\n    #10 mock_store /home/couchbase/couchbase/memcached/programs/engine_testapp/engine_testapp.c (engine_testapp+0x0000004c7304)\n    #11 storeCasVb11(engine_interface*, engine_interface_v1*, void const*, ENGINE_STORE_OPERATION, char const*, char const*, unsigned long, unsigned int, void**, unsigned long, unsigned short, unsigned int, unsigned char) /home/couchbase/couchbase/ep-engine/tests/ep_test_apis.cc:659 (ep_testsuite.so+0x0000000e8d17)\n    #12 store(engine_interface*, engine_interface_v1*, void const*, ENGINE_STORE_OPERATION, char const*, char const*, void**, unsigned long, unsigned short, unsigned int, unsigned char) /home/couchbase/couchbase/ep-engine/tests/ep_test_apis.cc:631 (ep_testsuite.so+0x0000000e654a)\n    #13 test_mb16357(engine_interface*, engine_interface_v1*) /home/couchbase/couchbase/ep-engine/tests/ep_testsuite.cc:11713 (ep_testsuite.so+0x0000000afc36)\n    #14 execute_test /home/couchbase/couchbase/memcached/programs/engine_testapp/engine_testapp.c (engine_testapp+0x0000004c4e2f)\n    #15 main crtstuff.c (engine_testapp+0x0000004c2d91)\n\n  Mutex M21372 acquired here while holding mutex M21408 in thread T10:\n    #0 pthread_mutex_lock \u003cnull\u003e (engine_testapp+0x00000047e970)\n    #1 cb_mutex_enter \u003cnull\u003e (libplatform.so.0.1.0+0x000000003870)\n    #2 Mutex::acquire() /home/couchbase/couchbase/ep-engine/src/mutex.cc:31 (ep.so+0x0000001e287e)\n    #3 LockHolder::lock() /home/couchbase/couchbase/ep-engine/src/locks.h:71 (ep.so+0x000000082543)\n    #4 LockHolder::LockHolder(Mutex\u0026, bool) /home/couchbase/couchbase/ep-engine/src/locks.h:48 (ep.so+0x0000000821b2)\n    #5 HashTable::getLockedBucket(int, int*) /home/couchbase/couchbase/ep-engine/src/stored-value.h:1266 (ep.so+0x00000008418a)\n    #6 HashTable::getLockedBucket(std::string const\u0026, int*) /home/couchbase/couchbase/ep-engine/src/stored-value.h:1295 (ep.so+0x00000007df9b)\n    #7 EventuallyPersistentStore::setWithMeta(Item const\u0026, unsigned long, void const*, bool, bool, unsigned char, bool, bool) /home/couchbase/couchbase/ep-engine/src/ep.cc:1827 (ep.so+0x0000000e6b4f)\n    #8 PassiveStream::commitMutation(MutationResponse*, bool) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1369 (ep.so+0x00000029ba21)\n    #9 PassiveStream::processMutation(MutationResponse*) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1341 (ep.so+0x00000029a7a0)\n    #10 PassiveStream::processBufferedMessages(unsigned int\u0026) /home/couchbase/couchbase/ep-engine/src/dcp-stream.cc:1281 (ep.so+0x00000029a0f2)\n    #11 DcpConsumer::processBufferedItems() /home/couchbase/couchbase/ep-engine/src/dcp-consumer.cc:599 (ep.so+0x000000262a23)\n    #12 Processer::run() /home/couchbase/couchbase/ep-engine/src/dcp-consumer.cc:48 (ep.so+0x0000002625ff)\n    #13 ExecutorThread::run() /home/couchbase/couchbase/ep-engine/src/executorthread.cc:110 (ep.so+0x0000001e3dd9)\n    #14 launch_executor_thread(void*) /home/couchbase/couchbase/ep-engine/src/executorthread.cc:34 (ep.so+0x0000001e32ea)\n    #15 platform_thread_wrap /home/couchbase/couchbase/platform/src/cb_pthreads.c (libplatform.so.0.1.0+0x00000000362c)\n\nChange-Id: I6c7b1fadf76529a044341a4a9b6ed0ea829c4999\nReviewed-on: http://review.couchbase.org/62567\nWell-Formed: buildbot \u003cbuild@couchbase.com\u003e\nTested-by: buildbot \u003cbuild@couchbase.com\u003e\nReviewed-by: Dave Rigby \u003cdaver@couchbase.com\u003e\nReviewed-by: Chiyoung Seo \u003cchiyoung@couchbase.com\u003e\n"},"parents_data":[{"branch_name":"refs/heads/3.0.x","commit_id":"771859f815f3067ece19edbe588c2c852e100998","is_merged_in_target_branch":true,"change_id":"I5e5a3e2cc5ba9ae17090e1a3ee4bde100d305f1c","change_number":62498,"patch_set_number":4,"change_status":"MERGED"}],"branch":"refs/heads/3.0.x"}},"requirements":[],"submit_records":[],"submit_requirements":[]}