Impala Public Jenkins has submitted this change and it was merged. ( http://gerrit.cloudera.org:8080/9527 )
Change subject: IMPALA-6609: Fix ownership of class members in KrpcDataStreamRecvr ...................................................................... IMPALA-6609: Fix ownership of class members in KrpcDataStreamRecvr A KrpcDataStreamRecvr is co-owned by the singleton KrpcDataStreamMgr and an exchange node. It's possible that some threads (e.g. RPC service threads) may still retain reference to the KrpcDataStreamRecvr after its owning exchange node has been closed. This is problematic as some members in the receiver (e.g. sender/receiver profiles) are actually owned by the exchange node so accessing them after the exchange node is closed and possibly deleted may lead to user-after-free. This patch changes the ownership of some members in KrpcDataStreamRecvr to the receiver. In particular, the profiles are now owned by the receiver and various stat counters and timers are in turn owned by these profiles. This prevents the use-after-free problem described above. This patch also moves the access to deferred_rpc_tracker_ in TakeOverEarlySenders() to be under the sender queue's 'lock_' to prevent another instance of IMPALA-6554. Testing done: core debug build. Change-Id: I3378496e2201b16c662b9daa634333480705c61a Reviewed-on: http://gerrit.cloudera.org:8080/9527 Reviewed-by: Dan Hecht <dhe...@cloudera.com> Reviewed-by: Sailesh Mukil <sail...@cloudera.com> Tested-by: Impala Public Jenkins --- M be/src/runtime/fragment-instance-state.cc M be/src/runtime/fragment-instance-state.h M be/src/runtime/krpc-data-stream-recvr.cc M be/src/runtime/krpc-data-stream-recvr.h M be/src/runtime/query-state.cc 5 files changed, 104 insertions(+), 30 deletions(-) Approvals: Dan Hecht: Looks good to me, approved Sailesh Mukil: Looks good to me, but someone else must approve Impala Public Jenkins: Verified -- To view, visit http://gerrit.cloudera.org:8080/9527 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: merged Gerrit-Change-Id: I3378496e2201b16c662b9daa634333480705c61a Gerrit-Change-Number: 9527 Gerrit-PatchSet: 6 Gerrit-Owner: Michael Ho <k...@cloudera.com> Gerrit-Reviewer: Dan Hecht <dhe...@cloudera.com> Gerrit-Reviewer: Impala Public Jenkins Gerrit-Reviewer: Michael Ho <k...@cloudera.com> Gerrit-Reviewer: Sailesh Mukil <sail...@cloudera.com> Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
