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85aaf40d07d0a8b172b12d1ecd75f622d10333b3","accounts_in_message":[],"_revision_number":2}],"current_revision_number":2,"current_revision":"85aaf40d07d0a8b172b12d1ecd75f622d10333b3","revisions":{"fc0e05917258de16066cfc531a2e21d0d754078a":{"kind":"REWORK","_number":1,"created":"2014-11-17 15:49:06.000000000","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/17/43317/1","fetch":{"anonymous http":{"url":"https://review.couchbase.org/ep-engine","ref":"refs/changes/17/43317/1","commands":{"Branch":"git fetch https://review.couchbase.org/ep-engine refs/changes/17/43317/1 \u0026\u0026 git checkout -b change-43317 FETCH_HEAD","Checkout":"git fetch https://review.couchbase.org/ep-engine refs/changes/17/43317/1 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/17/43317/1 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/17/43317/1 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/17/43317/1","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/17/43317/1 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"3c52249468ce518ad31452d7929fbe438315cb7b","subject":"Fix race in DCP Stream.itemReady"}],"author":{"name":"Dave Rigby","email":"daver@couchbase.com","date":"2014-11-17 15:10:37.000000000","tz":0},"committer":{"name":"Dave Rigby","email":"daver@couchbase.com","date":"2014-11-17 15:48:42.000000000","tz":0},"subject":"Fix race in ActiveStream.backfillItems","message":"Fix race in ActiveStream.backfillItems\n\nRace identified by ThreadSanitizer:\n\n  Read of size 8 at 0x7d480000b518 by main thread (mutexes: write M18375, write M898, write M18336):\n        #0 void STATWRITER_NAMESPACE::add_casted_stat\u003cunsigned long\u003e(char const*, unsigned long const\u0026, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/vagrant/couchbase-server/ep-engine/src/statwriter.h:45 (ep.so+0x0000000aacf9)\n        #1 ActiveStream::addStats(void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/vagrant/couchbase-server/ep-engine/src/dcp-stream.cc:378 (ep.so+0x0000000fee1e)\n        #2 DcpProducer::addStats(void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/vagrant/couchbase-server/ep-engine/src/dcp-producer.cc:502 (ep.so+0x0000000efcd3)\n        #3 ConnStatBuilder::operator()(SingleThreadedRCPtr\u003cConnHandler\u003e\u0026) /home/vagrant/couchbase-server/ep-engine/src/ep_engine.cc:3725 (ep.so+0x0000001ba92d)\n        #4 ConnStatBuilder std::for_each\u003cstd::_List_iterator\u003cSingleThreadedRCPtr\u003cConnHandler\u003e \u003e, ConnStatBuilder\u003e(std::_List_iterator\u003cSingleThreadedRCPtr\u003cConnHandler\u003e \u003e, std::_List_iterator\u003cSingleThreadedRCPtr\u003cConnHandler\u003e \u003e, ConnStatBuilder) /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/bits/stl_algo.h:4417 (ep.so+0x0000001ba565)\n        #5 void ConnMap::each_UNLOCKED\u003cConnStatBuilder\u003e(ConnStatBuilder) /home/vagrant/couchbase-server/ep-engine/src/connmap.h:148 (ep.so+0x0000001ba4c9)\n        #6 void ConnMap::each\u003cConnStatBuilder\u003e(ConnStatBuilder) /home/vagrant/couchbase-server/ep-engine/src/connmap.h:140 (ep.so+0x0000001b2bfe)\n        #7 EventuallyPersistentEngine::doDcpStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/vagrant/couchbase-server/ep-engine/src/ep_engine.cc:3978 (ep.so+0x00000018923e)\n        #8 EventuallyPersistentEngine::getStats(void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/vagrant/couchbase-server/ep-engine/src/ep_engine.cc:4384 (ep.so+0x00000018dc23)\n        #9 EvpGetStats(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/vagrant/couchbase-server/ep-engine/src/ep_engine.cc:214 (ep.so+0x000000174012)\n        #10 mock_get_stats /home/vagrant/couchbase-server/memcached/programs/engine_testapp/engine_testapp.c:196 (exe+0x0000000a741d)\n        #11 get_ull_stat(engine_interface*, engine_interface_v1*, char const*, char const*) /home/vagrant/couchbase-server/ep-engine/tests/ep_test_apis.cc:817 (ep_testsuite.so+0x0000000e1aa6)\n        #12 dcp_stream(engine_interface*, engine_interface_v1*, char const*, void const*, unsigned short, unsigned int, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, int, int, int, int, int, bool) /home/vagrant/couchbase-server/ep-engine/tests/ep_testsuite.cc:3370 (ep_testsuite.so+0x0000000afd38)\n        #13 test_dcp_producer_stream_req_disk(engine_interface*, engine_interface_v1*) /home/vagrant/couchbase-server/ep-engine/tests/ep_testsuite.cc:3596 (ep_testsuite.so+0x000000094ed0)\n        #14 execute_test /home/vagrant/couchbase-server/memcached/programs/engine_testapp/engine_testapp.c:1055 (exe+0x0000000a3e83)\n        #15 main /home/vagrant/couchbase-server/memcached/programs/engine_testapp/engine_testapp.c:1313 (exe+0x0000000a1d84)\n\n      Previous write of size 8 at 0x7d480000b518 by thread T10 (mutexes: write M276545986342477096, write M18342):\n        #0 ActiveStream::backfillReceived(Item*, backfill_source_t) /home/vagrant/couchbase-server/ep-engine/src/dcp-stream.cc:229 (ep.so+0x0000000fd6ab)\n        #1 CacheCallback::callback(CacheLookup\u0026) /home/vagrant/couchbase-server/ep-engine/src/dcp-backfill.cc:58 (ep.so+0x0000000cf5cc)\n        #2 CouchKVStore::recordDbDump(_db*, _docinfo*, void*) /home/vagrant/couchbase-server/ep-engine/src/couch-kvstore/couch-kvstore.cc:1577 (ep.so+0x0000002f3fe7)\n        #3 recordDbDumpC(_db*, _docinfo*, void*) /home/vagrant/couchbase-server/ep-engine/src/couch-kvstore/couch-kvstore.cc:74 (ep.so+0x0000002f2b70)\n        #4 lookup_callback(couchfile_lookup_request*, _sized_buf const*, _sized_buf const*) /home/vagrant/couchbase-server/couchstore/src/couch_db.cc:729 (libcouchstore.so+0x000000019e46)\n        #5 btree_lookup_inner(couchfile_lookup_request*, unsigned long, int, int) /home/vagrant/couchbase-server/couchstore/src/btree_read.cc:101 (libcouchstore.so+0x0000000132d7)\n        #6 btree_lookup_inner(couchfile_lookup_request*, unsigned long, int, int) /home/vagrant/couchbase-server/couchstore/src/btree_read.cc:71 (libcouchstore.so+0x000000012bd3)\n        #7 btree_lookup /home/vagrant/couchbase-server/couchstore/src/btree_read.cc:133 (libcouchstore.so+0x00000001236b)\n        #8 couchstore_changes_since /home/vagrant/couchbase-server/couchstore/src/couch_db.cc:774 (libcouchstore.so+0x0000000196ca)\n        #9 CouchKVStore::scan(ScanContext*) /home/vagrant/couchbase-server/ep-engine/src/couch-kvstore/couch-kvstore.cc:1227 (ep.so+0x0000002f2868)\n        #10 DCPBackfill::scan() /home/vagrant/couchbase-server/ep-engine/src/dcp-backfill.cc:150 (ep.so+0x0000000d08ea)\n        #11 DCPBackfill::run() /home/vagrant/couchbase-server/ep-engine/src/dcp-backfill.cc:97 (ep.so+0x0000000cfeb3)\n        #12 BackfillManager::backfill() /home/vagrant/couchbase-server/ep-engine/src/dcp-backfill-manager.cc:171 (ep.so+0x0000000c778d)\n        #13 BackfillManagerTask::run() /home/vagrant/couchbase-server/ep-engine/src/dcp-backfill-manager.cc:50 (ep.so+0x0000000c745a)\n        #14 ExecutorThread::run() /home/vagrant/couchbase-server/ep-engine/src/executorthread.cc:110 (ep.so+0x00000021641f)\n        #15 launch_executor_thread(void*) /home/vagrant/couchbase-server/ep-engine/src/executorthread.cc:34 (ep.so+0x00000021592a)\n        #16 platform_thread_wrap /home/vagrant/couchbase-server/platform/src/cb_pthreads.c:19 (libplatform.so.0.1.0+0x0000000033f4)\n\nChange-Id: I330979be66ea5113f28846f664af70559379f1ae\n"},"parents_data":[{"branch_name":"refs/heads/master","commit_id":"3c52249468ce518ad31452d7929fbe438315cb7b","is_merged_in_target_branch":false,"change_id":"I02cdf26c697f559a0afde91b377f1462c482349c","change_number":43316,"patch_set_number":1,"change_status":"MERGED"}],"branch":"refs/heads/master"},"85aaf40d07d0a8b172b12d1ecd75f622d10333b3":{"kind":"NO_CODE_CHANGE","_number":2,"created":"2014-11-18 03:24:46.000000000","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/17/43317/2","fetch":{"anonymous http":{"url":"https://review.couchbase.org/ep-engine","ref":"refs/changes/17/43317/2","commands":{"Branch":"git fetch https://review.couchbase.org/ep-engine refs/changes/17/43317/2 \u0026\u0026 git checkout -b change-43317 FETCH_HEAD","Checkout":"git fetch https://review.couchbase.org/ep-engine refs/changes/17/43317/2 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/ep-engine refs/changes/17/43317/2 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/ep-engine refs/changes/17/43317/2 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/ep-engine refs/changes/17/43317/2","Reset To":"git fetch https://review.couchbase.org/ep-engine refs/changes/17/43317/2 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"c2fd603f98bf0bb7284cf7b82ca9017becde2405","subject":"Fix race in DCP Stream.itemReady"}],"author":{"name":"Dave Rigby","email":"daver@couchbase.com","date":"2014-11-17 15:10:37.000000000","tz":0},"committer":{"name":"Chiyoung Seo","email":"chiyoung@couchbase.com","date":"2014-11-18 03:24:46.000000000","tz":0},"subject":"Fix race in ActiveStream.backfillItems","message":"Fix race in ActiveStream.backfillItems\n\nRace identified by ThreadSanitizer:\n\n  Read of size 8 at 0x7d480000b518 by main thread (mutexes: write M18375, write M898, write M18336):\n        #0 void STATWRITER_NAMESPACE::add_casted_stat\u003cunsigned long\u003e(char const*, unsigned long const\u0026, void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/vagrant/couchbase-server/ep-engine/src/statwriter.h:45 (ep.so+0x0000000aacf9)\n        #1 ActiveStream::addStats(void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/vagrant/couchbase-server/ep-engine/src/dcp-stream.cc:378 (ep.so+0x0000000fee1e)\n        #2 DcpProducer::addStats(void (*)(char const*, unsigned short, char const*, unsigned int, void const*), void const*) /home/vagrant/couchbase-server/ep-engine/src/dcp-producer.cc:502 (ep.so+0x0000000efcd3)\n        #3 ConnStatBuilder::operator()(SingleThreadedRCPtr\u003cConnHandler\u003e\u0026) /home/vagrant/couchbase-server/ep-engine/src/ep_engine.cc:3725 (ep.so+0x0000001ba92d)\n        #4 ConnStatBuilder std::for_each\u003cstd::_List_iterator\u003cSingleThreadedRCPtr\u003cConnHandler\u003e \u003e, ConnStatBuilder\u003e(std::_List_iterator\u003cSingleThreadedRCPtr\u003cConnHandler\u003e \u003e, std::_List_iterator\u003cSingleThreadedRCPtr\u003cConnHandler\u003e \u003e, ConnStatBuilder) /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/bits/stl_algo.h:4417 (ep.so+0x0000001ba565)\n        #5 void ConnMap::each_UNLOCKED\u003cConnStatBuilder\u003e(ConnStatBuilder) /home/vagrant/couchbase-server/ep-engine/src/connmap.h:148 (ep.so+0x0000001ba4c9)\n        #6 void ConnMap::each\u003cConnStatBuilder\u003e(ConnStatBuilder) /home/vagrant/couchbase-server/ep-engine/src/connmap.h:140 (ep.so+0x0000001b2bfe)\n        #7 EventuallyPersistentEngine::doDcpStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/vagrant/couchbase-server/ep-engine/src/ep_engine.cc:3978 (ep.so+0x00000018923e)\n        #8 EventuallyPersistentEngine::getStats(void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/vagrant/couchbase-server/ep-engine/src/ep_engine.cc:4384 (ep.so+0x00000018dc23)\n        #9 EvpGetStats(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/vagrant/couchbase-server/ep-engine/src/ep_engine.cc:214 (ep.so+0x000000174012)\n        #10 mock_get_stats /home/vagrant/couchbase-server/memcached/programs/engine_testapp/engine_testapp.c:196 (exe+0x0000000a741d)\n        #11 get_ull_stat(engine_interface*, engine_interface_v1*, char const*, char const*) /home/vagrant/couchbase-server/ep-engine/tests/ep_test_apis.cc:817 (ep_testsuite.so+0x0000000e1aa6)\n        #12 dcp_stream(engine_interface*, engine_interface_v1*, char const*, void const*, unsigned short, unsigned int, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, int, int, int, int, int, bool) /home/vagrant/couchbase-server/ep-engine/tests/ep_testsuite.cc:3370 (ep_testsuite.so+0x0000000afd38)\n        #13 test_dcp_producer_stream_req_disk(engine_interface*, engine_interface_v1*) /home/vagrant/couchbase-server/ep-engine/tests/ep_testsuite.cc:3596 (ep_testsuite.so+0x000000094ed0)\n        #14 execute_test /home/vagrant/couchbase-server/memcached/programs/engine_testapp/engine_testapp.c:1055 (exe+0x0000000a3e83)\n        #15 main /home/vagrant/couchbase-server/memcached/programs/engine_testapp/engine_testapp.c:1313 (exe+0x0000000a1d84)\n\n      Previous write of size 8 at 0x7d480000b518 by thread T10 (mutexes: write M276545986342477096, write M18342):\n        #0 ActiveStream::backfillReceived(Item*, backfill_source_t) /home/vagrant/couchbase-server/ep-engine/src/dcp-stream.cc:229 (ep.so+0x0000000fd6ab)\n        #1 CacheCallback::callback(CacheLookup\u0026) /home/vagrant/couchbase-server/ep-engine/src/dcp-backfill.cc:58 (ep.so+0x0000000cf5cc)\n        #2 CouchKVStore::recordDbDump(_db*, _docinfo*, void*) /home/vagrant/couchbase-server/ep-engine/src/couch-kvstore/couch-kvstore.cc:1577 (ep.so+0x0000002f3fe7)\n        #3 recordDbDumpC(_db*, _docinfo*, void*) /home/vagrant/couchbase-server/ep-engine/src/couch-kvstore/couch-kvstore.cc:74 (ep.so+0x0000002f2b70)\n        #4 lookup_callback(couchfile_lookup_request*, _sized_buf const*, _sized_buf const*) /home/vagrant/couchbase-server/couchstore/src/couch_db.cc:729 (libcouchstore.so+0x000000019e46)\n        #5 btree_lookup_inner(couchfile_lookup_request*, unsigned long, int, int) /home/vagrant/couchbase-server/couchstore/src/btree_read.cc:101 (libcouchstore.so+0x0000000132d7)\n        #6 btree_lookup_inner(couchfile_lookup_request*, unsigned long, int, int) /home/vagrant/couchbase-server/couchstore/src/btree_read.cc:71 (libcouchstore.so+0x000000012bd3)\n        #7 btree_lookup /home/vagrant/couchbase-server/couchstore/src/btree_read.cc:133 (libcouchstore.so+0x00000001236b)\n        #8 couchstore_changes_since /home/vagrant/couchbase-server/couchstore/src/couch_db.cc:774 (libcouchstore.so+0x0000000196ca)\n        #9 CouchKVStore::scan(ScanContext*) /home/vagrant/couchbase-server/ep-engine/src/couch-kvstore/couch-kvstore.cc:1227 (ep.so+0x0000002f2868)\n        #10 DCPBackfill::scan() /home/vagrant/couchbase-server/ep-engine/src/dcp-backfill.cc:150 (ep.so+0x0000000d08ea)\n        #11 DCPBackfill::run() /home/vagrant/couchbase-server/ep-engine/src/dcp-backfill.cc:97 (ep.so+0x0000000cfeb3)\n        #12 BackfillManager::backfill() /home/vagrant/couchbase-server/ep-engine/src/dcp-backfill-manager.cc:171 (ep.so+0x0000000c778d)\n        #13 BackfillManagerTask::run() /home/vagrant/couchbase-server/ep-engine/src/dcp-backfill-manager.cc:50 (ep.so+0x0000000c745a)\n        #14 ExecutorThread::run() /home/vagrant/couchbase-server/ep-engine/src/executorthread.cc:110 (ep.so+0x00000021641f)\n        #15 launch_executor_thread(void*) /home/vagrant/couchbase-server/ep-engine/src/executorthread.cc:34 (ep.so+0x00000021592a)\n        #16 platform_thread_wrap /home/vagrant/couchbase-server/platform/src/cb_pthreads.c:19 (libplatform.so.0.1.0+0x0000000033f4)\n\nChange-Id: I330979be66ea5113f28846f664af70559379f1ae\nReviewed-on: http://review.couchbase.org/43317\nReviewed-by: Chiyoung Seo \u003cchiyoung@couchbase.com\u003e\nTested-by: Chiyoung Seo \u003cchiyoung@couchbase.com\u003e\n"},"parents_data":[{"branch_name":"refs/heads/master","commit_id":"c2fd603f98bf0bb7284cf7b82ca9017becde2405","is_merged_in_target_branch":true,"change_id":"I02cdf26c697f559a0afde91b377f1462c482349c","change_number":43316,"patch_set_number":2,"change_status":"MERGED"}],"branch":"refs/heads/master"}},"requirements":[],"submit_records":[],"submit_requirements":[]}