Sailesh Mukil has uploaded a new patch set (#2). Change subject: IMPALA-4456: Change query_exec_state_lock_ to a reader-writer lock ......................................................................
IMPALA-4456: Change query_exec_state_lock_ to a reader-writer lock This patch includes a ported reader-writer lock implementation from Google utils and is used to replace the mutex query_exec_state_lock_ to a RW lock. This can reduce the amount of lock contention on this and translates to big wins both in terms of performance and scalability. Please refer the JIRA for more information. Change-Id: I790a95e7179f07aa7ba188d5422c5e054353ba0b --- M be/src/gutil/CMakeLists.txt A be/src/gutil/read_write_lock.cc A be/src/gutil/read_write_lock.h M be/src/service/impala-beeswax-server.cc M be/src/service/impala-hs2-server.cc M be/src/service/impala-http-handler.cc M be/src/service/impala-server.cc M be/src/service/impala-server.h A be/src/util/rw_lock.h 9 files changed, 174 insertions(+), 10 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/21/5021/2 -- To view, visit http://gerrit.cloudera.org:8080/5021 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: newpatchset Gerrit-Change-Id: I790a95e7179f07aa7ba188d5422c5e054353ba0b Gerrit-PatchSet: 2 Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-Owner: Sailesh Mukil <[email protected]>
