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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13786) Add S3Guard committer for zero-rename commits to consistent S3 endpoints
Date Fri, 17 Mar 2017 12:59:42 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13786?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Steve Loughran updated HADOOP-13786:
------------------------------------
    Attachment: HADOOP-13786-HADOOP-13345-016.patch

Patch 016, jenkins issues

* checkstyles, still leaving line length. I really can't be motivated to encapsulate all the
fields in test base classes. This aint production code.
* failing test pair look due to ordering of list output; sorting them both before comparing

No other changes

The test run here *really* played up, including unrelated stuff like {{ITestS3AContractDistCp}},
which run standalone. I think there's multipart upload cleanup going on which is interfering
with parallel tests.

Plan: 
# identify where that's happening.
# have a sysprop indicating parallel/serial test running, and in serial mode: cleanup



> Add S3Guard committer for zero-rename commits to consistent S3 endpoints
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-13786
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13786
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: fs/s3
>    Affects Versions: HADOOP-13345
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>         Attachments: HADOOP-13786-HADOOP-13345-001.patch, HADOOP-13786-HADOOP-13345-002.patch,
HADOOP-13786-HADOOP-13345-003.patch, HADOOP-13786-HADOOP-13345-004.patch, HADOOP-13786-HADOOP-13345-005.patch,
HADOOP-13786-HADOOP-13345-006.patch, HADOOP-13786-HADOOP-13345-006.patch, HADOOP-13786-HADOOP-13345-007.patch,
HADOOP-13786-HADOOP-13345-009.patch, HADOOP-13786-HADOOP-13345-010.patch, HADOOP-13786-HADOOP-13345-011.patch,
HADOOP-13786-HADOOP-13345-012.patch, HADOOP-13786-HADOOP-13345-013.patch, HADOOP-13786-HADOOP-13345-015.patch,
HADOOP-13786-HADOOP-13345-016.patch, s3committer-master.zip
>
>
> A goal of this code is "support O(1) commits to S3 repositories in the presence of failures".
Implement it, including whatever is needed to demonstrate the correctness of the algorithm.
(that is, assuming that s3guard provides a consistent view of the presence/absence of blobs,
show that we can commit directly).
> I consider ourselves free to expose the blobstore-ness of the s3 output streams (ie.
not visible until the close()), if we need to use that to allow us to abort commit operations.



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