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https://issues.apache.org/jira/browse/HDFS-2130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13141020#comment-13141020
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Hadoop QA commented on HDFS-2130:
---------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12501737/hdfs-2130.txt
against trunk revision .
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 11 new or modified tests.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
-1 findbugs. The patch appears to introduce 1 new Findbugs (version 1.3.9)
warnings.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
-1 core tests. The patch failed these unit tests:
org.apache.hadoop.hdfs.TestDataTransferProtocol
org.apache.hadoop.hdfs.TestFileCreationClient
org.apache.hadoop.hdfs.TestSetrepIncreasing
+1 contrib tests. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-HDFS-Build/1512//testReport/
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HDFS-Build/1512//artifact/trunk/hadoop-hdfs-project/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/1512//console
This message is automatically generated.
> Switch default checksum to CRC32C
> ---------------------------------
>
> Key: HDFS-2130
> URL: https://issues.apache.org/jira/browse/HDFS-2130
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs client
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Attachments: hdfs-2130.txt
>
>
> Once the other subtasks/parts of HDFS-2080 are complete, CRC32C will be a
> much more efficient checksum algorithm than CRC32. Hence we should change the
> default checksum to CRC32C.
> However, in order to continue to support append against blocks created with
> the old checksum, we will need to implement some kind of handshaking in the
> write pipeline.
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