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https://issues.apache.org/jira/browse/HADOOP-1859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12525872
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Raghu Angadi commented on HADOOP-1859:
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BufferedInputStream.available() throws an IOException (this is closest to
getPos()). And some or all of the other calls like read(), seek() throw
IOException if the stream is closed. In fact, if getPos() used
BufferedInputStream.avaiable() instead of '(cur - pos)' in the calculation, it
would have resulted in an IOException.
> FSInputDataStream.getPos throws null pointer exception when file has been
> closed
> --------------------------------------------------------------------------------
>
> Key: HADOOP-1859
> URL: https://issues.apache.org/jira/browse/HADOOP-1859
> Project: Hadoop
> Issue Type: Bug
> Components: fs
> Affects Versions: 0.14.1
> Reporter: Benjamin Reed
>
> If an FSInputDataStream object has been closed, invoking getPos() will cause
> a NullPointerException. This is because BufferedInputStream.close() sets in
> to null, and Buffer.getPos() does not check for in being null.
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