Matthew Jacobs has uploaded a new change for review.

  http://gerrit.cloudera.org:8080/4895

Change subject: IMPALA-4411: Kudu inserts violate lock ordering and could 
deadlock
......................................................................

IMPALA-4411: Kudu inserts violate lock ordering and could deadlock

This fixes a potential hang because the code took
QueryExecState::lock_ before SessionState::lock, which is
the wrong order. A hang has not yet been observed.

The code that was taking the session lock doesn't actually
need to be holding the QueryExecState lock_, so this is easy
to fix by moving the relevant code.

Testing: Running an exhaustive test job, and stress tests
manually.

Change-Id: I2aa36fce78525a80a6b880e1b668105006bc1425
---
M be/src/service/query-exec-state.cc
1 file changed, 12 insertions(+), 6 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/95/4895/1
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I2aa36fce78525a80a6b880e1b668105006bc1425
Gerrit-PatchSet: 1
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Matthew Jacobs <m...@cloudera.com>

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