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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7682) {{DistributedFileSystem#getFileChecksum}} of a snapshotted file includes non-snapshotted content
Date Thu, 05 Feb 2015 20:33:35 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14307935#comment-14307935
] 

Hadoop QA commented on HDFS-7682:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12696791/HDFS-7682.002.patch
  against trunk revision afbecbb.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-hdfs-project/hadoop-hdfs:

                  org.apache.hadoop.hdfs.server.namenode.TestCheckpoint

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/9441//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/9441//console

This message is automatically generated.

> {{DistributedFileSystem#getFileChecksum}} of a snapshotted file includes non-snapshotted
content
> ------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-7682
>                 URL: https://issues.apache.org/jira/browse/HDFS-7682
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.7.0
>            Reporter: Charles Lamb
>            Assignee: Charles Lamb
>         Attachments: HDFS-7682.000.patch, HDFS-7682.001.patch, HDFS-7682.002.patch
>
>
> DistributedFileSystem#getFileChecksum of a snapshotted file includes non-snapshotted
content.
> The reason why this happens is because DistributedFileSystem#getFileChecksum simply calculates
the checksum of all of the CRCs from the blocks in the file. But, in the case of a snapshotted
file, we don't want to include data in the checksum that was appended to the last block in
the file after the snapshot was taken.



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