Hello Kudu Jenkins,
I'd like you to reexamine a change. Please visit
http://gerrit.cloudera.org:8080/15113
to look at the new patch set (#3).
Change subject: KUDU-3046: deflake TabletServerQuiescingITest
......................................................................
KUDU-3046: deflake TabletServerQuiescingITest
The test was flaky for a number of reasons including:
- Slowness in TSAN mode along with a low Raft timeout meant workloads
would fail to even create tablets.
- Addressed this by increasing the heartbeat interval in TSAN mode.
- Not hitting the exact number of scanners when running the tool because
of a TOCTOU race between checking the number of scanners and running
the tool.
- Addressed this by reducing the number of read threads and thus
reducing the degrees of freedom with which the tool can run (either
0 scanners or 1 scanner).
- TestAbruptStepdownWhileAllQuiescing failed because the test would step
down a leader without the guarantee that it was the latest leader, so
a leader could still exist.
- Addressed this by stepping down on all tablet servers just to be
sure.
There appears to be another source of flakiness that are less specific
to this test, but this dropped flakiness from failing 4/100 to failing
9/2000 (all due to a TSAN issue in the TestWorkload that I'm still
getting to the bottom of).
Change-Id: I3f9ef531062c4b66648840e04962070768fbad5d
---
M src/kudu/integration-tests/tablet_server_quiescing-itest.cc
1 file changed, 26 insertions(+), 10 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/13/15113/3
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I3f9ef531062c4b66648840e04962070768fbad5d
Gerrit-Change-Number: 15113
Gerrit-PatchSet: 3
Gerrit-Owner: Andrew Wong <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
