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https://issues.apache.org/jira/browse/HDFS-7542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14251567#comment-14251567
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Hadoop QA commented on HDFS-7542:
---------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12687988/HDFS-7542.002.patch
against trunk revision 1050d42.
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 2 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.datanode.TestDataNodeVolumeFailureToleration
The following test timeouts occurred in
hadoop-hdfs-project/hadoop-hdfs:
org.apache.hadoop.hdfs.server.blockmanagement.TestDatanodeManager
Test results:
https://builds.apache.org/job/PreCommit-HDFS-Build/9071//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/9071//console
This message is automatically generated.
> Add an option to DFSAdmin -safemode wait to ignore connection failures
> ----------------------------------------------------------------------
>
> Key: HDFS-7542
> URL: https://issues.apache.org/jira/browse/HDFS-7542
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: tools
> Affects Versions: 2.6.0
> Reporter: Stephen Chu
> Assignee: Stephen Chu
> Priority: Minor
> Attachments: HDFS-7542.001.patch, HDFS-7542.002.patch
>
>
> Currently, the _dfsadmin -safemode wait_ command aborts when connection to
> the NN fails (network glitch, ConnectException when NN is unreachable,
> EOFException if network link shut down).
> In certain situations, users have asked for an option to make the command
> resilient to connection failures. This is useful so that the admin can
> initiate the wait command despite the NN not being fully up or survive
> intermittent network issues. With this option, the admin can rely on the wait
> command continuing to poll instead of aborting.
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