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https://issues.apache.org/jira/browse/HDFS-6582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14093339#comment-14093339
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Brandon Li commented on HDFS-6582:
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I've committed the patch. Thank you, [~abutala], for the contribution!
> Missing null check in RpcProgramNfs3#read(XDR, SecurityHandler)
> ---------------------------------------------------------------
>
> Key: HDFS-6582
> URL: https://issues.apache.org/jira/browse/HDFS-6582
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: nfs
> Affects Versions: 2.2.0
> Reporter: Ted Yu
> Assignee: Abhiraj Butala
> Priority: Minor
> Fix For: 2.6.0
>
> Attachments: HDFS-6582.patch
>
>
> Around line 691:
> {code}
> FSDataInputStream fis = clientCache.getDfsInputStream(userName,
> Nfs3Utils.getFileIdPath(handle));
> try {
> readCount = fis.read(offset, readbuffer, 0, count);
> {code}
> fis may be null, leading to NullPointerException
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