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https://issues.apache.org/jira/browse/HDFS-8506?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14570868#comment-14570868
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Tony Reix commented on HDFS-8506:
---------------------------------
With 18 runs, there are now 39 unstable tests.
New unstable tests
hdfs.server.namenode.TestCacheDirectives
ipc.TestIPC
mapreduce.v2.app.TestRuntimeEstimators
security.ssl.TestReloadingX509TrustManager
yarn.client.TestApplicationClientProtocolOnHA
hdfs.server.namenode.TestCacheDirectives 12 0-1 0
0 | 1/18
ipc.TestIPC
32 0-1 0 0 | 1/18
mapreduce.v2.app.TestRuntimeEstimators 2 0-1 0
0 | 1/18
security.ssl.TestReloadingX509TrustManager 5 0-1 0
0 | 1/18
yarn.client.TestApplicationClientProtocolOnHA 17 0 0-1
0 | 1/18
> List of 33 Unstable tests on branch-2.7
> ---------------------------------------
>
> Key: HDFS-8506
> URL: https://issues.apache.org/jira/browse/HDFS-8506
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: test
> Affects Versions: 2.7.1
> Environment: Ubuntu / x86_64
> Hadoop branch-2.7 (source code of Monday May 26th)
> Reporter: Tony Reix
> Attachments: Unstable-branch-2.7-May26th,
> UnstableDetails-branch-2.7-May26th
>
>
> On my Ubuntu / x86_64 machine, configured for Hadoop since months, I've run
> Hadoop tests of branch branch-2.7 (source code of Monday May 26th) during
> days. It produced 14 runs in the EXACT same environment. And it shows that
> several tests sometimes fail, randomly.
> 12 runs gave the exact same number of tests done and tests skipped:
> - 10977 tests
> - 254 skipped
> 1 test gave only 10972 tests. Another gave only 9760 tests.
> I've used the 12 runs with 10977 tests for building the attached result file,
> which shows that 33 tests sometimes fail.
> T: Tests
> F: Failures
> E: Errors
> S: Skipped
> NN/n : Number of times the issue appeared out of the 12 runs
> m-M: minimum number of failure up to Maximum number of failures.
> Example:
> T F
> E S | NN/n
> --------------------------------------------------------------------------------------
> cli.TestHDFSCLI 1 0-1 0 0
> | 11/12
> hdfs.TestAppendSnapshotTruncate 1 0 0-1 0 | 1/12
> ...
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