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Posted to common-issues@hadoop.apache.org by "Jason Lowe (JIRA)" <ji...@apache.org> on 2015/03/03 20:26:06 UTC

[jira] [Commented] (HADOOP-8143) Change distcp to have -pb on by default

    [ https://issues.apache.org/jira/browse/HADOOP-8143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14345571#comment-14345571 ] 

Jason Lowe commented on HADOOP-8143:
------------------------------------

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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