Lars Volker has uploaded a new patch set (#5). Change subject: IMPALA-4494: Fix crash in SimpleScheduler ......................................................................
IMPALA-4494: Fix crash in SimpleScheduler The scheduler maintains a local list of active backends, which is updated through messages from the statestore. Even the local backend enters this list by registering with the statestore and being included in a statestore update message. Thus, during restarts it can happen that a query gets scheduled with exec_at_coord set to true, while the local backend has not been registered with the scheduler. In this case the IP address lookup in the internal BackendConfig fails and an empty IP address is returned, leading to a nullptr dereference down the line. This change adds an additional check when handling updates from the statestore to make sure that the backend config is either empty or contains the local backend as well. It also changes scheduling when exec_at_coord is true to always use the local backend, irrespective of whether it is present in the backend config. Change-Id: I6e1196a2fa47e5954c4a190aa326c135d039a77f --- M be/src/scheduling/simple-scheduler-test.cc M be/src/scheduling/simple-scheduler.cc 2 files changed, 85 insertions(+), 24 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/27/5127/5 -- To view, visit http://gerrit.cloudera.org:8080/5127 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: newpatchset Gerrit-Change-Id: I6e1196a2fa47e5954c4a190aa326c135d039a77f Gerrit-PatchSet: 5 Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-Owner: Lars Volker <l...@cloudera.com> Gerrit-Reviewer: Henry Robinson <he...@cloudera.com> Gerrit-Reviewer: Lars Volker <l...@cloudera.com> Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
