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https://issues.apache.org/jira/browse/HADOOP-8060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13244536#comment-13244536
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Kihwal Lee commented on HADOOP-8060:
------------------------------------
Created subtasks and specified dependency among them. HDFS-3176 should go in
first to avoid any breakage until the commit of the hdfs portions.
I will do more testing and add test cases. I will appreciate any feedback on
the patches.
> Add a capability to use of consistent checksums for append and copy
> -------------------------------------------------------------------
>
> Key: HADOOP-8060
> URL: https://issues.apache.org/jira/browse/HADOOP-8060
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs, util
> Affects Versions: 0.23.0, 0.23.1, 0.24.0
> Reporter: Kihwal Lee
> Assignee: Kihwal Lee
> Fix For: 0.23.2, 0.24.0
>
>
> After the improved CRC32C checksum feature became default, some of use cases
> involving data movement are no longer supported. For example, when running
> DistCp to copy from a file stored with the CRC32 checksum to a new cluster
> with the CRC32C set to default checksum, the final data integrity check fails
> because of mismatch in checksums.
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