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https://issues.apache.org/jira/browse/HDFS-10908?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15536643#comment-15536643
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Wei-Chiu Chuang commented on HDFS-10908:
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LGTM. Test case not needed since it's a log message only improvement.
> Improve StripedBlockReader#createBlockReader error logging
> ----------------------------------------------------------
>
> Key: HDFS-10908
> URL: https://issues.apache.org/jira/browse/HDFS-10908
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: erasure-coding
> Affects Versions: 3.0.0-alpha2
> Reporter: Wei-Chiu Chuang
> Assignee: Manoj Govindassamy
> Priority: Minor
> Attachments: HDFS-10908.01.patch
>
>
> In {{StripedBlockReader#createBlockReader}} if any IOException is thrown, the
> error is logged at debug level and then returns a null. This means in a
> typical configuration an NPE may be thrown without logging a cause if the
> StripedBlockReader object is accessed.
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