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https://issues.apache.org/jira/browse/HDFS-7682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14301885#comment-14301885
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Charles Lamb commented on HDFS-7682:
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[~jingzhao],
Did you have any more comments on this Jira?
BTW, the test failure is unrelated.
Thanks.
Charles
> {{DistributedFileSystem#getFileChecksum}} of a snapshotted file includes
> non-snapshotted content
> ------------------------------------------------------------------------------------------------
>
> Key: HDFS-7682
> URL: https://issues.apache.org/jira/browse/HDFS-7682
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.7.0
> Reporter: Charles Lamb
> Assignee: Charles Lamb
> Attachments: HDFS-7682.000.patch, HDFS-7682.001.patch
>
>
> DistributedFileSystem#getFileChecksum of a snapshotted file includes
> non-snapshotted content.
> The reason why this happens is because DistributedFileSystem#getFileChecksum
> simply calculates the checksum of all of the CRCs from the blocks in the
> file. But, in the case of a snapshotted file, we don't want to include data
> in the checksum that was appended to the last block in the file after the
> snapshot was taken.
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