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https://issues.apache.org/jira/browse/HDFS-5856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13887477#comment-13887477
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Hadoop QA commented on HDFS-5856:
---------------------------------
{color:green}+1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12626248/HDFS-5856.diff
against trunk revision .
{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}. The javadoc tool did not generate any
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 1.3.9) warnings.
{color:green}+1 release audit{color}. The applied patch does not increase
the total number of release audit warnings.
{color:green}+1 core tests{color}. The patch passed unit tests in
hadoop-hdfs-project/hadoop-hdfs.
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-HDFS-Build/5998//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/5998//console
This message is automatically generated.
> DataNode.checkDiskError might throw NPE
> ---------------------------------------
>
> Key: HDFS-5856
> URL: https://issues.apache.org/jira/browse/HDFS-5856
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 2.2.0
> Reporter: Josh Elser
> Assignee: Josh Elser
> Priority: Minor
> Attachments: HDFS-5856.diff, HDFS-5856.diff
>
>
> Running a small 2.2.0 cluster with a heavy workload. I noticed in the
> DataNode log that when faced with network exceptions, I would sometimes get a
> NullPointerException from checkDiskError.
> Looking at the code, if the Exception that is handed to checkDiskError
> contains a null message, the checks that try to identify if the Exception is
> network-related will throw a NPE.
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