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https://issues.apache.org/jira/browse/HDFS-6231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13966102#comment-13966102
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Hadoop QA commented on HDFS-6231:
---------------------------------
{color:green}+1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12639652/HDFS-6231.1.patch
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}. 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 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/6648//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/6648//console
This message is automatically generated.
> DFSClient hangs infinitely if using hedged reads and all eligible datanodes
> die.
> --------------------------------------------------------------------------------
>
> Key: HDFS-6231
> URL: https://issues.apache.org/jira/browse/HDFS-6231
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs-client
> Affects Versions: 3.0.0, 2.4.0
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Attachments: HDFS-6231.1.patch
>
>
> When using hedged reads, and all eligible datanodes for the read get flagged
> as dead or ignored, then the client is supposed to refetch block locations
> from the NameNode to retry the read. Instead, we've seen that the client can
> hang indefinitely.
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