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From "Thomas Demoor (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11463) Replace method-local TransferManager object with S3AFileSystem#transfers
Date Thu, 15 Jan 2015 09:03:36 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11463?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14278448#comment-14278448
] 

Thomas Demoor commented on HADOOP-11463:
----------------------------------------

[~stevel@apache.org] shutDown terminates immediately. In-process transfers are abandoned.
For regular uploads, S3 simply discards the object. However, for multi-part uploads, parts
that were completely uploaded are stored (and paid for) forever and the multi-part upload
is "in progress". The purging functionality alleviates this. If fs.s3a.multipart.purge ==
true, the constructor of S3AFileSystem aborts all in process multi-part uploads older than
fs.s3a.multipart.purge.age seconds (this protects "active" multi-part uploads). 

[~tedyu] Yeah, that was to be expected. See comment 2 in the description above. 

> Replace method-local TransferManager object with S3AFileSystem#transfers
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-11463
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11463
>             Project: Hadoop Common
>          Issue Type: Task
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>         Attachments: hadoop-11463-001.patch
>
>
> This is continuation of HADOOP-11446.
> The following changes are made according to Thomas Demoor's comments:
> 1. Replace method-local TransferManager object with S3AFileSystem#transfers
> 2. Do not shutdown TransferManager after purging existing multipart file - otherwise
the current transfer is unable to proceed
> 3. Shutdown TransferManager instance in the close method of S3AFileSystem



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