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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10426) TestPendingInvalidateBlock failed in trunk
Date Tue, 27 Sep 2016 17:02:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15526747#comment-15526747
] 

Hudson commented on HDFS-10426:
-------------------------------

SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #10497 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/10497/])
HDFS-10426. TestPendingInvalidateBlock failed in trunk. Contributed by (iwasakims: rev f55eb981dd408ca61d49488f83c99c1fc1f83134)
* (edit) hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestPendingInvalidateBlock.java


> TestPendingInvalidateBlock failed in trunk
> ------------------------------------------
>
>                 Key: HDFS-10426
>                 URL: https://issues.apache.org/jira/browse/HDFS-10426
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: test
>            Reporter: Yiqun Lin
>            Assignee: Yiqun Lin
>             Fix For: 2.8.0, 3.0.0-alpha2
>
>         Attachments: HDFS-10426.001.patch, HDFS-10426.002.patch, HDFS-10426.003.patch,
HDFS-10426.004.patch, HDFS-10426.005.patch, HDFS-10426.006.patch
>
>
> The test {{TestPendingInvalidateBlock}} failed sometimes. The stack info:
> {code}
> org.apache.hadoop.hdfs.server.blockmanagement.TestPendingInvalidateBlock
> testPendingDeletion(org.apache.hadoop.hdfs.server.blockmanagement.TestPendingInvalidateBlock)
 Time elapsed: 7.703 sec  <<< FAILURE!
> java.lang.AssertionError: expected:<2> but was:<1>
> 	at org.junit.Assert.fail(Assert.java:88)
> 	at org.junit.Assert.failNotEquals(Assert.java:743)
> 	at org.junit.Assert.assertEquals(Assert.java:118)
> 	at org.junit.Assert.assertEquals(Assert.java:555)
> 	at org.junit.Assert.assertEquals(Assert.java:542)
> 	at org.apache.hadoop.hdfs.server.blockmanagement.TestPendingInvalidateBlock.testPendingDeletion(TestPendingInvalidateBlock.java:92)
> {code}
> It looks that the {{invalidateBlock}} has been removed before we do the check
> {code}
>     // restart NN
>     cluster.restartNameNode(true);
>     dfs.delete(foo, true);
>     Assert.assertEquals(0, cluster.getNamesystem().getBlocksTotal());
>     Assert.assertEquals(REPLICATION, cluster.getNamesystem()
>         .getPendingDeletionBlocks());
>     Assert.assertEquals(REPLICATION,
>         dfs.getPendingDeletionBlocksCount());
> {code}
> And I look into the related configurations. I found the property {{dfs.namenode.replication.interval}}
was just set as 1 second in this test. And after the delay time of {{dfs.namenode.startup.delay.block.deletion.sec}}
and the delete operation was slowly, it will cause this case. We can see the stack info before,
the failed test costs 7.7s more than 5+1 second.
> One way can improve this.
> * Increase the time of {{dfs.namenode.replication.interval}}



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