[jira] Commented: (MAPREDUCE-972) distcp can timeout during rename operation to s3

["Todd Lipcon (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-972?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12753946#action_12753946 ] 

Todd Lipcon commented on MAPREDUCE-972:
---------------------------------------

Couple bits of feedback:

- ProgressThread could do with some short javadoc
- isComplete should be marked volatile or made into an AtomicBoolean - then you don't have to worry about synchronization on it or the odd copying into myComplete
- can ProgressThread be a static class? I think so.

Other than that, lgtm.

> distcp can timeout during rename operation to s3
> ------------------------------------------------
>
>                 Key: MAPREDUCE-972
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-972
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: distcp
>    Affects Versions: 0.20.1
>            Reporter: Aaron Kimball
>            Assignee: Aaron Kimball
>         Attachments: MAPREDUCE-972.patch
>
>
> rename() in S3 is implemented as copy + delete. The S3 copy operation can perform very slowly, which may cause task timeout.

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