Hello Dan Burkert, Mike Percy, Kudu Jenkins,

I'd like you to reexamine a change.  Please visit

    http://gerrit.cloudera.org:8080/3823

to look at the new patch set (#10).

Change subject: KUDU-1500: Data race in 
RaftConsensusITest.TestCorruptReplicaMetadata
......................................................................

KUDU-1500: Data race in RaftConsensusITest.TestCorruptReplicaMetadata

The test intends to corrupt the metadata of one of the tserver tablets.
While the cluster is in the process of resurrecting the failed tserver,
the Partition and PartitionSchema on that tserver is accessed using
TabletPeer in an unguarded manner via ListTablets RPCs.

The proposed fix here keeps the Partition and PartitionSchema immutable
once after it is loaded during replica bootstrap. These fields are never
overwritten again during Tablet Copy or any other workflow.
Also a unit test is added to exercise this data race window. i.e,
the unit test aims to issue ListTablets RPCs during a follower's
tablet copy stage and provides an optimistic coverage for the fix.

Testing: Passed about 2000 iteration of the failing test
raft_consensus-itest.TestCorruptReplicaMetadata

Change-Id: If57617e22b41296b8d4e8ad131220f1ebb235019
---
M src/kudu/integration-tests/cluster_itest_util.h
M src/kudu/integration-tests/tablet_copy-itest.cc
M src/kudu/tablet/tablet_metadata.cc
3 files changed, 140 insertions(+), 16 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/23/3823/10
-- 
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: If57617e22b41296b8d4e8ad131220f1ebb235019
Gerrit-PatchSet: 10
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Dinesh Bhat <din...@cloudera.com>
Gerrit-Reviewer: Dan Burkert <d...@cloudera.com>
Gerrit-Reviewer: Dinesh Bhat <din...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Mike Percy <mpe...@apache.org>
Gerrit-Reviewer: Todd Lipcon <t...@apache.org>

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