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https://issues.apache.org/jira/browse/HDFS-525?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12741551#action_12741551
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Suresh Srinivas commented on HDFS-525:
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It is important to have unit test to ensure correct functionality. The only
reason why I left the negative test case is to justify 30 seconds wait time for
which we run multi threaded access. The first negative test that proves there
is a threading issue fails in under a second. This should not add to the time
of the test.
BTW as Gary indicated, my intention was not to include this in under 10 minute
tests.
> ListPathsServlet.java uses static SimpleDateFormat that has threading issues
> ----------------------------------------------------------------------------
>
> Key: HDFS-525
> URL: https://issues.apache.org/jira/browse/HDFS-525
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Reporter: Suresh Srinivas
> Assignee: Suresh Srinivas
> Attachments: HDFS-525.1.patch, HDFS-525.patch, HDFS-525.patch
>
>
> SimpleDateFormat is not thread safe. Multiple threads accessing the servlet
> can cause threading issues
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