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https://issues.apache.org/jira/browse/HADOOP-6083?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12744201#action_12744201
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Hairong Kuang commented on HADOOP-6083:
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TestFsck#testFsckMove corrupts a block file on disk and then depends on block
reports to notify NN of the corrupt blocks. However, with the change in
HADOOP-4584, block reports are always sent from in-memory volumeMap. The
volumeMap depends on block scanner to scan the disk and update the in-memory
volumeMap if there is a difference. The test needs to make the scanner period
shorter.
> TestFsck takes nearly 10 minutes to run - a quarter of the entire hdfs-test
> time
> --------------------------------------------------------------------------------
>
> Key: HADOOP-6083
> URL: https://issues.apache.org/jira/browse/HADOOP-6083
> Project: Hadoop Common
> Issue Type: Improvement
> Components: test
> Reporter: Jakob Homan
> Assignee: Hairong Kuang
>
> run-test-hdfs was run repeatedly (n = 16) and the execution time of each test
> was recorded. Testfsck was by far the longest test, with a median run time
> of 564 seconds, nearly 10 minutes. This is a quarter of the entire time
> spent over the average 40 minute run for all the tests, and much too long for
> any individual test.
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