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https://issues.apache.org/jira/browse/HDFS-5341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13802597#comment-13802597
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Hadoop QA commented on HDFS-5341:
---------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12609784/HDFS-5341.004.patch
against trunk revision .
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:red}-1 tests included{color}. The patch doesn't appear to include
any new or modified tests.
Please justify why no new tests are needed for this
patch.
Also please list what manual steps were performed to
verify this patch.
{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:red}-1 core tests{color}. The patch failed these unit tests in
hadoop-hdfs-project/hadoop-hdfs:
org.apache.hadoop.hdfs.server.blockmanagement.TestBlocksWithNotEnoughRacks
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-HDFS-Build/5257//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/5257//console
This message is automatically generated.
> DirectoryScanner hold the object lock dataset too long in scan,that make the
> datanode turn into deadnode and block all reciving thread
> ---------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-5341
> URL: https://issues.apache.org/jira/browse/HDFS-5341
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Reporter: qus-jiawei
> Assignee: qus-jiawei
> Labels: deadlock
> Fix For: 3.0.0
>
> Attachments: HDFS-5341.000.patch, HDFS-5341.001.patch,
> HDFS-5341.002.patch, HDFS-5341.003.patch, HDFS-5341.004.patch
>
>
> When DirectoryScanner doing the scan function, it holding the dataset to diff
> the block info between memory and disk.But it do a lot of disk operation
> because it call the file's getlength funciton.
> Once the dataset is locked,heartbeat thread and all DataXceiver thread would
> be blocked.
> So,such disk operation should move to the async disk scan
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