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data race on CB3ExecutorPool::is{Hi,Low}PrioQSet\n\nAs identified by TSan when adding additional ExecutorPool tests, the\ntwo flags isLowPrioQSet \u0026 isHiPrioQSet are accessed without locks from\ndifferent threads:\n\nWARNING: ThreadSanitizer: data race (pid\u003d25602)\n   Write of size 1 at 0x7b5000005ad8 by main thread (mutexes: write M1128287290183932680):\n     #0 CB3ExecutorPool::_registerTaskable(Taskable\u0026) cb3_executorpool.cc:442 (ep-engine_ep_unit_tests+0x00000048891c)\n     #1 CB3ExecutorPool::registerTaskable(Taskable\u0026) cb3_executorpool.cc:454 (ep-engine_ep_unit_tests+0x000000488a16)\n     #2 ExecutorPoolTest_cancel_can_schedule_Test\u003cTestExecutorPool\u003e::TestBody() executorpool_test.cc:530 (ep-engine_ep_unit_tests+0x0000012e207c)\n     ...\n\n   Previous read of size 1 at 0x7b5000005ad8 by thread T38:\n     #0 CB3ExecutorPool::getSleepQ(unsigned int) cb3_executorpool.h:112 (ep-engine_ep_unit_tests+0x000000485421)\n     #1 CB3ExecutorPool::_nextTask(CB3ExecutorThread\u0026, unsigned char) cb3_executorpool.cc:148 (ep-engine_ep_unit_tests+0x000000485421)\n     #2 CB3ExecutorPool::nextTask(CB3ExecutorThread\u0026, unsigned char) cb3_executorpool.cc:163 (ep-engine_ep_unit_tests+0x0000004854e7)\n     #3 CB3ExecutorThread::run() cb3_executorthread.cc:129 (ep-engine_ep_unit_tests+0x00000049cf7d)\n     #4 launch_executor_thread cb3_executorthread.cc:34 (ep-engine_ep_unit_tests+0x00000049d0ae)\n     #5 CouchbaseThread::run() ../platform/src/cb_pthreads.cc:58 (libplatform_so.so.0.1.0+0x000000010e1b)\n     #6 platform_thread_wrap ../platform/src/cb_pthreads.cc:71 (libplatform_so.so.0.1.0+0x000000010e1b)\n\nThis appears to be a latent issue in the CB3ExecutorPool, only exposed\nwhen different priority Taskables (Buckets) are registered.\n\nFix by making the flags atomic.\n\nChange-Id: 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CB3ExecutorPool::is{Hi,Low}PrioQSet","message":"MB-40791: Fix data race on CB3ExecutorPool::is{Hi,Low}PrioQSet\n\nAs identified by TSan when adding additional ExecutorPool tests, the\ntwo flags isLowPrioQSet \u0026 isHiPrioQSet are accessed without locks from\ndifferent threads:\n\nWARNING: ThreadSanitizer: data race (pid\u003d25602)\n   Write of size 1 at 0x7b5000005ad8 by main thread (mutexes: write M1128287290183932680):\n     #0 CB3ExecutorPool::_registerTaskable(Taskable\u0026) cb3_executorpool.cc:442 (ep-engine_ep_unit_tests+0x00000048891c)\n     #1 CB3ExecutorPool::registerTaskable(Taskable\u0026) cb3_executorpool.cc:454 (ep-engine_ep_unit_tests+0x000000488a16)\n     #2 ExecutorPoolTest_cancel_can_schedule_Test\u003cTestExecutorPool\u003e::TestBody() executorpool_test.cc:530 (ep-engine_ep_unit_tests+0x0000012e207c)\n     ...\n\n   Previous read of size 1 at 0x7b5000005ad8 by thread T38:\n     #0 CB3ExecutorPool::getSleepQ(unsigned int) cb3_executorpool.h:112 (ep-engine_ep_unit_tests+0x000000485421)\n     #1 CB3ExecutorPool::_nextTask(CB3ExecutorThread\u0026, unsigned char) cb3_executorpool.cc:148 (ep-engine_ep_unit_tests+0x000000485421)\n     #2 CB3ExecutorPool::nextTask(CB3ExecutorThread\u0026, unsigned char) cb3_executorpool.cc:163 (ep-engine_ep_unit_tests+0x0000004854e7)\n     #3 CB3ExecutorThread::run() cb3_executorthread.cc:129 (ep-engine_ep_unit_tests+0x00000049cf7d)\n     #4 launch_executor_thread cb3_executorthread.cc:34 (ep-engine_ep_unit_tests+0x00000049d0ae)\n     #5 CouchbaseThread::run() ../platform/src/cb_pthreads.cc:58 (libplatform_so.so.0.1.0+0x000000010e1b)\n     #6 platform_thread_wrap ../platform/src/cb_pthreads.cc:71 (libplatform_so.so.0.1.0+0x000000010e1b)\n\nThis appears to be a latent issue in the CB3ExecutorPool, only exposed\nwhen different priority Taskables (Buckets) are registered.\n\nFix by making the flags atomic.\n\nChange-Id: Ibf7fda1443bad32a36914a6d1bc7b3424a3bfe75\n"},"parents_data":[{"branch_name":"refs/heads/master","commit_id":"43e29a5b014d91069c96c5fe0bd9b02267eb467a","is_merged_in_target_branch":false,"change_id":"Ia01595b9bf4c2b6c494f0b32615052b495afc8d9","change_number":133455,"patch_set_number":2,"change_status":"MERGED"}],"branch":"refs/heads/master"},"8e74e342c837c1fe17c046bc0777330c70380572":{"kind":"TRIVIAL_REBASE","_number":3,"created":"2020-08-06 21:03:06.000000000","uploader":{"_account_id":1000966,"name":"Dave 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refs/changes/89/133889/3 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/kv_engine refs/changes/89/133889/3 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/kv_engine refs/changes/89/133889/3 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/kv_engine refs/changes/89/133889/3","Reset To":"git fetch https://review.couchbase.org/kv_engine refs/changes/89/133889/3 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"dadb790a0d408d77894099566a6222afaf9fa8ca","subject":"MB-36956: Refactor executorpool_test for multiple ExecutorPools"}],"author":{"name":"Dave Rigby","email":"daver@couchbase.com","date":"2020-08-06 10:14:17.000000000","tz":60},"committer":{"name":"Dave Rigby","email":"daver@couchbase.com","date":"2020-08-06 15:16:06.000000000","tz":60},"subject":"MB-40791: Fix data race on CB3ExecutorPool::is{Hi,Low}PrioQSet","message":"MB-40791: Fix data race on CB3ExecutorPool::is{Hi,Low}PrioQSet\n\nAs identified by TSan when adding additional ExecutorPool tests, the\ntwo flags isLowPrioQSet \u0026 isHiPrioQSet are accessed without locks from\ndifferent threads:\n\nWARNING: ThreadSanitizer: data race (pid\u003d25602)\n   Write of size 1 at 0x7b5000005ad8 by main thread (mutexes: write M1128287290183932680):\n     #0 CB3ExecutorPool::_registerTaskable(Taskable\u0026) cb3_executorpool.cc:442 (ep-engine_ep_unit_tests+0x00000048891c)\n     #1 CB3ExecutorPool::registerTaskable(Taskable\u0026) cb3_executorpool.cc:454 (ep-engine_ep_unit_tests+0x000000488a16)\n     #2 ExecutorPoolTest_cancel_can_schedule_Test\u003cTestExecutorPool\u003e::TestBody() executorpool_test.cc:530 (ep-engine_ep_unit_tests+0x0000012e207c)\n     ...\n\n   Previous read of size 1 at 0x7b5000005ad8 by thread T38:\n     #0 CB3ExecutorPool::getSleepQ(unsigned int) cb3_executorpool.h:112 (ep-engine_ep_unit_tests+0x000000485421)\n     #1 CB3ExecutorPool::_nextTask(CB3ExecutorThread\u0026, unsigned char) cb3_executorpool.cc:148 (ep-engine_ep_unit_tests+0x000000485421)\n     #2 CB3ExecutorPool::nextTask(CB3ExecutorThread\u0026, unsigned char) cb3_executorpool.cc:163 (ep-engine_ep_unit_tests+0x0000004854e7)\n     #3 CB3ExecutorThread::run() cb3_executorthread.cc:129 (ep-engine_ep_unit_tests+0x00000049cf7d)\n     #4 launch_executor_thread cb3_executorthread.cc:34 (ep-engine_ep_unit_tests+0x00000049d0ae)\n     #5 CouchbaseThread::run() ../platform/src/cb_pthreads.cc:58 (libplatform_so.so.0.1.0+0x000000010e1b)\n     #6 platform_thread_wrap ../platform/src/cb_pthreads.cc:71 (libplatform_so.so.0.1.0+0x000000010e1b)\n\nThis appears to be a latent issue in the CB3ExecutorPool, only exposed\nwhen different priority Taskables (Buckets) are registered.\n\nFix by making the flags atomic.\n\nChange-Id: Ibf7fda1443bad32a36914a6d1bc7b3424a3bfe75\n"},"parents_data":[{"branch_name":"refs/heads/master","commit_id":"dadb790a0d408d77894099566a6222afaf9fa8ca","is_merged_in_target_branch":false,"change_id":"Ia01595b9bf4c2b6c494f0b32615052b495afc8d9","change_number":133455,"patch_set_number":3,"change_status":"MERGED"}],"branch":"refs/heads/master"},"479db948cfc6b10c3c31c7fa9999b26a3c5c4a20":{"kind":"REWORK","_number":4,"created":"2020-08-07 10:33:42.000000000","uploader":{"_account_id":1000966,"name":"Dave 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refs/changes/89/133889/4 \u0026\u0026 git checkout FETCH_HEAD","Cherry Pick":"git fetch https://review.couchbase.org/kv_engine refs/changes/89/133889/4 \u0026\u0026 git cherry-pick FETCH_HEAD","Format Patch":"git fetch https://review.couchbase.org/kv_engine refs/changes/89/133889/4 \u0026\u0026 git format-patch -1 --stdout FETCH_HEAD","Pull":"git pull https://review.couchbase.org/kv_engine refs/changes/89/133889/4","Reset To":"git fetch https://review.couchbase.org/kv_engine refs/changes/89/133889/4 \u0026\u0026 git reset --hard FETCH_HEAD"}}},"commit":{"parents":[{"commit":"2ead98e384894d29665c1a8f7210906456d259ce","subject":"MB-36956: Refactor executorpool_test for multiple ExecutorPools"}],"author":{"name":"Dave Rigby","email":"daver@couchbase.com","date":"2020-08-06 10:14:17.000000000","tz":60},"committer":{"name":"Dave Rigby","email":"daver@couchbase.com","date":"2020-08-07 10:33:42.000000000","tz":0},"subject":"MB-40791: Fix data race on CB3ExecutorPool::is{Hi,Low}PrioQSet","message":"MB-40791: Fix data race on CB3ExecutorPool::is{Hi,Low}PrioQSet\n\nAs identified by TSan when adding additional ExecutorPool tests, the\ntwo flags isLowPrioQSet \u0026 isHiPrioQSet are accessed without locks from\ndifferent threads:\n\nWARNING: ThreadSanitizer: data race (pid\u003d25602)\n   Write of size 1 at 0x7b5000005ad8 by main thread (mutexes: write M1128287290183932680):\n     #0 CB3ExecutorPool::_registerTaskable(Taskable\u0026) cb3_executorpool.cc:442 (ep-engine_ep_unit_tests+0x00000048891c)\n     #1 CB3ExecutorPool::registerTaskable(Taskable\u0026) cb3_executorpool.cc:454 (ep-engine_ep_unit_tests+0x000000488a16)\n     #2 ExecutorPoolTest_cancel_can_schedule_Test\u003cTestExecutorPool\u003e::TestBody() executorpool_test.cc:530 (ep-engine_ep_unit_tests+0x0000012e207c)\n     ...\n\n   Previous read of size 1 at 0x7b5000005ad8 by thread T38:\n     #0 CB3ExecutorPool::getSleepQ(unsigned int) cb3_executorpool.h:112 (ep-engine_ep_unit_tests+0x000000485421)\n     #1 CB3ExecutorPool::_nextTask(CB3ExecutorThread\u0026, unsigned char) cb3_executorpool.cc:148 (ep-engine_ep_unit_tests+0x000000485421)\n     #2 CB3ExecutorPool::nextTask(CB3ExecutorThread\u0026, unsigned char) cb3_executorpool.cc:163 (ep-engine_ep_unit_tests+0x0000004854e7)\n     #3 CB3ExecutorThread::run() cb3_executorthread.cc:129 (ep-engine_ep_unit_tests+0x00000049cf7d)\n     #4 launch_executor_thread cb3_executorthread.cc:34 (ep-engine_ep_unit_tests+0x00000049d0ae)\n     #5 CouchbaseThread::run() ../platform/src/cb_pthreads.cc:58 (libplatform_so.so.0.1.0+0x000000010e1b)\n     #6 platform_thread_wrap ../platform/src/cb_pthreads.cc:71 (libplatform_so.so.0.1.0+0x000000010e1b)\n\nThis appears to be a latent issue in the CB3ExecutorPool, only exposed\nwhen different priority Taskables (Buckets) are registered.\n\nFix by making the flags atomic.\n\nChange-Id: Ibf7fda1443bad32a36914a6d1bc7b3424a3bfe75\nReviewed-on: http://review.couchbase.org/c/kv_engine/+/133889\nTested-by: Build Bot \u003cbuild@couchbase.com\u003e\nReviewed-by: James Harrison \u003cjames.harrison@couchbase.com\u003e\n"},"parents_data":[{"branch_name":"refs/heads/master","commit_id":"2ead98e384894d29665c1a8f7210906456d259ce","is_merged_in_target_branch":true,"change_id":"Ia01595b9bf4c2b6c494f0b32615052b495afc8d9","change_number":133455,"patch_set_number":4,"change_status":"MERGED"}],"branch":"refs/heads/master"}},"requirements":[],"submit_records":[{"status":"CLOSED","labels":[{"label":"Verified","status":"OK","applied_by":{"_account_id":1000011,"name":"Build 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