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https://issues.apache.org/jira/browse/HDFS-11446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15894772#comment-15894772
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Ming Ma commented on HDFS-11446:
--------------------------------
Thanks [~linyiqun]. The patch looks good. Do you get compile issue when applied
to branch-2?
> TestMaintenanceState#testWithNNAndDNRestart fails intermittently
> ----------------------------------------------------------------
>
> Key: HDFS-11446
> URL: https://issues.apache.org/jira/browse/HDFS-11446
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: 3.0.0-alpha2
> Reporter: Yiqun Lin
> Assignee: Yiqun Lin
> Attachments: HDFS-11446.001.patch
>
>
> The test {{TestMaintenanceState#testWithNNAndDNRestart}} fails in trunk. The
> stack info(
> https://builds.apache.org/job/PreCommit-HDFS-Build/18423/testReport/ ):
> {code}
> java.lang.AssertionError: expected null, but was:<Wrong number of replicas
> for block BP-1367163238-172.17.0.2-1487836532907:blk_1073741825_1001:
> expected 3, got 2
> ,DatanodeInfoWithStorage[127.0.0.1:42649,DS-c499e6ef-ce14-428b-baef-8cf2a122b248,DISK],DatanodeInfoWithStorage[127.0.0.1:40774,DS-cc484c09-6e32-4804-a337-2871f37b62e1,DISK],pending
> block # 1 ,under replicated # 0 ,>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotNull(Assert.java:664)
> at org.junit.Assert.assertNull(Assert.java:646)
> at org.junit.Assert.assertNull(Assert.java:656)
> at
> org.apache.hadoop.hdfs.TestMaintenanceState.testWithNNAndDNRestart(TestMaintenanceState.java:731)
> {code}
> The failure seems due to pending block has not been replicated. We can bump
> the retry times since sometimes the cluster would be busy. Also we can use
> {{GenericTestUtils#waitFor}} to simplified the current compared logic.
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