[jira] [Commented] (HDFS-2263) Make DFSClient report bad blocks more quickly

["Hadoop QA (Commented) (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDFS-2263?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13176038#comment-13176038 ] 

Hadoop QA commented on HDFS-2263:
---------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12508641/HDFS-2263.patch
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 6 new or modified tests.

    -1 javadoc.  The javadoc tool appears to have generated 20 warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 eclipse:eclipse.  The patch built with eclipse:eclipse.

    -1 findbugs.  The patch appears to introduce 1 new Findbugs (version 1.3.9) warnings.

    -1 release audit.  The applied patch generated 1 release audit warnings (more than the trunk's current 0 warnings).

    -1 core tests.  The patch failed these unit tests:
                  org.apache.hadoop.hdfs.TestClientReportBadBlock
                  org.apache.hadoop.hdfs.TestDFSClientRetries
                  org.apache.hadoop.hdfs.TestDatanodeBlockScanner
                  org.apache.hadoop.hdfs.TestPread
                  org.apache.hadoop.hdfs.server.blockmanagement.TestBlockTokenWithDFS

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/1740//testReport/
Release audit warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/1740//artifact/trunk/patchprocess/patchReleaseAuditProblems.txt
Findbugs warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/1740//artifact/trunk/hadoop-hdfs-project/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/1740//console

This message is automatically generated.
                
> Make DFSClient report bad blocks more quickly
> ---------------------------------------------
>
>                 Key: HDFS-2263
>                 URL: https://issues.apache.org/jira/browse/HDFS-2263
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs client
>    Affects Versions: 0.20.2
>            Reporter: Aaron T. Myers
>            Assignee: Harsh J
>         Attachments: HDFS-2263.patch
>
>
> In certain circumstances the DFSClient may detect a block as being bad without reporting it promptly to the NN.
> If when reading a file a client finds an invalid checksum of a block, it immediately reports that bad block to the NN. If when serving up a block a DN finds a truncated block, it reports this to the client, but the client merely adds that DN to the list of dead nodes and moves on to trying another DN, without reporting this to the NN.

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