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https://issues.apache.org/jira/browse/HDFS-11045?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15730089#comment-15730089
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Daniel Templeton commented on HDFS-11045:
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That locking issue really seems to be the bane of this test. If I make the
test flexible enough to accept the skewed values, then I'm not really testing
anything anymore. [~kasha] just pointed out an alternative I should have
thought of a long time ago: don't actually run the scanner. It looks like I
should be able to easily take the {{ReportCompiler}} out of context and test it
on its own. I will still need a test that tests the real thing, but it just
needs to test that throttling is happening and can be loose enough to take the
locking issues in stride.
> TestDirectoryScanner#testThrottling fails: Throttle is too permissive
> ---------------------------------------------------------------------
>
> Key: HDFS-11045
> URL: https://issues.apache.org/jira/browse/HDFS-11045
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 3.0.0-alpha2
> Reporter: John Zhuge
> Assignee: Daniel Templeton
> Priority: Minor
> Attachments: HDFS-11045.001.patch, HDFS-11045.002.patch,
> HDFS-11045.003.patch, HDFS-11045.004.patch, HDFS-11045.005.patch,
> HDFS-11045.006.patch, HDFS-11045.007.patch, HDFS-11045.008.patch,
> HDFS-11045.009.patch
>
>
> TestDirectoryScanner.testThrottling:709 Throttle is too permissive
> https://builds.apache.org/job/PreCommit-HDFS-Build/17259/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt
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