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Date: Sat, 4 Mar 2017 02:14:45 +0000 (UTC)
From: "Yiqun Lin (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.13045587.1487848426000.60954.1488593685283@Atlassian.JIRA>
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Subject: [jira] [Updated] (HDFS-11446)
 TestMaintenanceState#testWithNNAndDNRestart fails intermittently
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archived-at: Sat, 04 Mar 2017 02:14:55 -0000


     [ https://issues.apache.org/jira/browse/HDFS-11446?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yiqun Lin updated HDFS-11446:
-----------------------------
    Attachment: HDFS-11446.002.patch

Thanks [~mingma] for the review. Attach a new patch to rebase the code. I have verified the new patch can also apply 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, HDFS-11446.002.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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