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https://issues.apache.org/jira/browse/HADOOP-13607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15503411#comment-15503411
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Steve Loughran commented on HADOOP-13607:
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I presume you mean {{DFSOutputStream.close()}}
be good to specify re-entrancy requirements, even if testing isn't something
that can be done.
> Specify and test contract for FileSystem#close.
> -----------------------------------------------
>
> Key: HADOOP-13607
> URL: https://issues.apache.org/jira/browse/HADOOP-13607
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Reporter: Chris Nauroth
>
> This issue proposes to enhance the {{FileSystem}} specification by describing
> the expected semantics of {{FileSystem#close}} and adding corresponding
> contract tests. Notable aspects are that the method must be idempotent as
> dictated by {{java.io.Closeable}} and closing also interacts with the
> delete-on-exit feature.
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