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https://issues.apache.org/jira/browse/KUDU-2984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16960240#comment-16960240
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Yingchun Lai edited comment on KUDU-2984 at 10/26/19 3:01 AM:
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I found 2 problems may make this test flaky:
# Test table has only 1 tablet (by default) and 1 replica, so data writes on
only 1 tserver, the other 2 may not conssume much memory when we do scan
workload.
# For tserver-1, scan workload is going on together with interval memory GC,
in a corner case, GC may always take place after CHECK, so CHECK always failed.
I'm sorry that this test is still flaky after 2 fix patches:(, now I try to fix
again
[https://gerrit.cloudera.org/c/14553/,|https://gerrit.cloudera.org/c/14553/]
and repeated test for thousands times on Ubuntu 18.04 and all passed. However,
I'll do more test before I try to merge it.
was (Author: acelyc111):
I found 2 problems may make this test flaky:
# Test table has only 1 tablet (by default) and 1 replica, so data writes on
only 1 tserver, the other 2 may not conssume much memory when we do scan
workload.
# For tserver-1, scan workload is going on together with interval memory GC,
in a corner case, GC may always take place after CHECK, so CHECK always failed.
I'm sorry that this test is still flaky after 2 fix patches:(, now I try to fix
again
[https://gerrit.cloudera.org/c/14553/,|https://gerrit.cloudera.org/c/14553/]
repeat test for thousands times on Ubuntu 18.04. I'll do more test before I try
to merge it.
> memory_gc-itest is flaky
> ------------------------
>
> Key: KUDU-2984
> URL: https://issues.apache.org/jira/browse/KUDU-2984
> Project: Kudu
> Issue Type: Bug
> Affects Versions: 1.11.0, 1.12.0
> Reporter: Alexey Serbin
> Assignee: Yingchun Lai
> Priority: Minor
> Attachments: memory_gc-itest.txt.xz
>
>
> The {{memory_gc-itest}} fails time to time with the following error message
> (DEBUG build):
> {noformat}
> src/kudu/integration-tests/memory_gc-itest.cc:117: Failure
> Expected: (ratio) >= (0.1), actual: 0.0600604 vs 0.1
> tserver-2
> src/kudu/util/test_util.cc:339: Failure
> Failed
> Timed out waiting for assertion to pass.
> {noformat}
> The full log is attached.
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