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https://issues.apache.org/jira/browse/HBASE-21482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16688550#comment-16688550
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Ted Yu commented on HBASE-21482:
--------------------------------
Didn't reproduce the test failure in branch-2.
Apache Maven 3.5.4 (1edded0938998edf8bf061f1ceb3cfdeccf443fe;
2018-06-17T18:33:14Z)
Maven home: /apache-maven-3.5.4
Java version: 1.8.0_161, vendor: Oracle Corporation, runtime: /jdk1.8.0_161/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "3.10.0-327.28.3.el7.x86_64", arch: "amd64", family:
"unix"
> TestHRegion fails due to 'Too many open files'
> ----------------------------------------------
>
> Key: HBASE-21482
> URL: https://issues.apache.org/jira/browse/HBASE-21482
> Project: HBase
> Issue Type: Bug
> Reporter: Ted Yu
> Priority: Major
> Attachments:
> org.apache.hadoop.hbase.regionserver.TestHRegion-output.txt,
> org.apache.hadoop.hbase.regionserver.TestHRegion.txt
>
>
> TestHRegion fails due to 'Too many open files' in master branch.
> Here is one failed subtest :
> {code}
> testCheckAndDelete_ThatDeleteWasWritten(org.apache.hadoop.hbase.regionserver.TestHRegion)
> Time elapsed: 2.373 sec <<< ERROR!
> java.lang.IllegalStateException: failed to create a child event loop
> at
> org.apache.hadoop.hbase.regionserver.TestHRegion.initHRegion(TestHRegion.java:4853)
> at
> org.apache.hadoop.hbase.regionserver.TestHRegion.initHRegion(TestHRegion.java:4844)
> at
> org.apache.hadoop.hbase.regionserver.TestHRegion.initHRegion(TestHRegion.java:4835)
> at
> org.apache.hadoop.hbase.regionserver.TestHRegion.testCheckAndDelete_ThatDeleteWasWritten(TestHRegion.java:2034)
> Caused by: org.apache.hbase.thirdparty.io.netty.channel.ChannelException:
> failed to open a new selector
> at
> org.apache.hadoop.hbase.regionserver.TestHRegion.initHRegion(TestHRegion.java:4853)
> at
> org.apache.hadoop.hbase.regionserver.TestHRegion.initHRegion(TestHRegion.java:4844)
> at
> org.apache.hadoop.hbase.regionserver.TestHRegion.initHRegion(TestHRegion.java:4835)
> at
> org.apache.hadoop.hbase.regionserver.TestHRegion.testCheckAndDelete_ThatDeleteWasWritten(TestHRegion.java:2034)
> Caused by: java.io.IOException: Too many open files
> at
> org.apache.hadoop.hbase.regionserver.TestHRegion.initHRegion(TestHRegion.java:4853)
> at
> org.apache.hadoop.hbase.regionserver.TestHRegion.initHRegion(TestHRegion.java:4844)
> at
> org.apache.hadoop.hbase.regionserver.TestHRegion.initHRegion(TestHRegion.java:4835)
> at
> org.apache.hadoop.hbase.regionserver.TestHRegion.testCheckAndDelete_ThatDeleteWasWritten(TestHRegion.java:2034)
> {code}
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