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https://issues.apache.org/jira/browse/HDFS-2777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13185163#comment-13185163
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Kihwal Lee commented on HDFS-2777:
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Actually ignoreCRC is for disabling checksum verification. CRC copying needs to
be disabled by default when -crc is not specified.
> When copying a file out of HDFS, modifying it, and uploading it back into
> HDFS, the put fails due to a CRC mismatch
> -------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-2777
> URL: https://issues.apache.org/jira/browse/HDFS-2777
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs client
> Affects Versions: 0.23.1
> Environment: KR at Yahoo
> Reporter: Kevin J. Price
>
> Performing an hdfs -get on a file, modifying the file, and using hdfs -put to
> place the file back into HDFS results in a checksum error. It seems that the
> problem is a .crc file being generated locally from the -get command even
> though the -crc option was NOT specified.
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