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https://issues.apache.org/jira/browse/HADOOP-15085?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16274514#comment-16274514
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Jason Lowe commented on HADOOP-15085:
-------------------------------------
Some places in hadoop-common code that have this pattern:
* FileUtil#createJarWithClassPath
* MapFile#main
* NativeIO#copyFileUnbuffered
* TestCodec#writeSplitTestFile
> Output streams closed with IOUtils suppressing write errors
> -----------------------------------------------------------
>
> Key: HADOOP-15085
> URL: https://issues.apache.org/jira/browse/HADOOP-15085
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Jason Lowe
>
> There are a few places in hadoop-common that are closing an output stream
> with IOUtils.cleanupWithLogger like this:
> {code}
> try {
> ...write to outStream...
> } finally {
> IOUtils.cleanupWithLogger(LOG, outStream);
> }
> {code}
> This suppresses any IOException that occurs during the close() method which
> could lead to partial/corrupted output without throwing a corresponding
> exception. The code should either use try-with-resources or explicitly close
> the stream within the try block so the exception thrown during close() is
> properly propagated as exceptions during write operations are.
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