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https://issues.apache.org/jira/browse/HADOOP-8143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14345571#comment-14345571
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Jason Lowe commented on HADOOP-8143:
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I agree that #1 seems pretty bad if distcp is going to skip data integrity
checks by default. If that's the case then that seems like a strong argument
to have distcp preserve block sizes by default so it can still do checksums by
default.
> Change distcp to have -pb on by default
> ---------------------------------------
>
> Key: HADOOP-8143
> URL: https://issues.apache.org/jira/browse/HADOOP-8143
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Dave Thompson
> Assignee: Mithun Radhakrishnan
> Priority: Minor
> Attachments: HADOOP-8143.1.patch
>
>
> We should have the preserve blocksize (-pb) on in distcp by default.
> checksum which is on by default will always fail if blocksize is not the same.
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