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https://issues.apache.org/jira/browse/HDFS-9243?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14970914#comment-14970914
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Wei-Chiu Chuang commented on HDFS-9243:
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Thanks for the analysis. Please feel free to assign this jira to yourself.
Because the failure appear quite frequent, it should be possible to improve
upon it, even though it may not be an issue in production. I am thinking it
could be resolved by reducing certain timeout parameters, so that the test case
doesn't need to wait long.
> TestUnderReplicatedBlocks#testSetrepIncWithUnderReplicatedBlocks test timeout
> -----------------------------------------------------------------------------
>
> Key: HDFS-9243
> URL: https://issues.apache.org/jira/browse/HDFS-9243
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: HDFS
> Reporter: Wei-Chiu Chuang
> Priority: Minor
>
> org.apache.hadoop.hdfs.server.blockmanagement.TestUnderReplicatedBlocks
> sometimes time out.
> This is happening on trunk as can be observed in several recent jenkins job.
> (e.g. https://builds.apache.org/job/Hadoop-Hdfs-trunk/2423/
> https://builds.apache.org/job/Hadoop-Hdfs-trunk/2386/
> https://builds.apache.org/job/Hadoop-Hdfs-trunk/2351/
> https://builds.apache.org/job/Hadoop-Hdfs-trunk-Java8/472/
> On my local Linux machine, this test case times out 6 out of 10 times. When
> it does not time out, this test takes about 20 seconds, otherwise it takes
> more than 60 seconds and then time out.
> I suspect it's a deadlock issue, as dead lock had occurred at this test case
> in HDFS-5527 before.
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