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https://issues.apache.org/jira/browse/HDFS-1252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12892576#action_12892576
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Todd Lipcon commented on HDFS-1252:
-----------------------------------
Yes, it should preserve the original test intention. It just uses the normal
access methods instead of calling functions directly on in the NN instance.
> TestDFSConcurrentFileOperations broken in 0.20-appendj
> ------------------------------------------------------
>
> Key: HDFS-1252
> URL: https://issues.apache.org/jira/browse/HDFS-1252
> Project: Hadoop HDFS
> Issue Type: Test
> Components: test
> Affects Versions: 0.20-append
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: 0.20-append
>
> Attachments: hdfs-1252.txt
>
>
> This test currently has several flaws:
> - It calls DN.updateBlock with a BlockInfo instance, which then causes
> java.lang.RuntimeException: java.lang.NoSuchMethodException:
> org.apache.hadoop.hdfs.server.namenode.BlocksMap$BlockInfo.<init>() in the
> logs when the DN tries to send blockReceived for the block
> - It assumes that getBlockLocations returns an up-to-date length block after
> a sync, which is false. It happens to work because it calls getBlockLocations
> directly on the NN, and thus gets a direct reference to the block in the
> blockmap, which later gets updated
> This patch fixes this test to use the AppendTestUtil functions to intiiate
> recovery, and generally pass more reliably.
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