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From "Lei (Eddy) Xu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11988) Verify HDFS Snapshots with open files captured are safe across truncates and appends on current version file
Date Sat, 19 Aug 2017 01:05:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11988?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16133849#comment-16133849
] 

Lei (Eddy) Xu commented on HDFS-11988:
--------------------------------------

One nit:

{code}
602: Assert.assertEquals("Snap3 and before truncate file checksum should match!",
        hbaseFileCksumBeforeTruncate, hbaseFileCksumS3);
{code}

is this line duplicated with line 571?

+1 pending after fixing this.  Thanks [~manojg]

> Verify HDFS Snapshots with open files captured are safe across truncates and appends
on current version file
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-11988
>                 URL: https://issues.apache.org/jira/browse/HDFS-11988
>             Project: Hadoop HDFS
>          Issue Type: Test
>          Components: hdfs, snapshots
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Manoj Govindassamy
>            Assignee: Manoj Govindassamy
>         Attachments: HDFS-11988.01.patch
>
>
> With HDFS-11402 fix, open files can also be captured in the snapshots as point-in-time
copies. This jira is for adding more unit tests to verify the correctness of the snapshot
files using checksums when the current version of the file is truncated and appended after
the snapshot time.



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