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https://issues.apache.org/jira/browse/HDFS-3808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13436405#comment-13436405
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Hadoop QA commented on HDFS-3808:
---------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12541283/HDFS-3808.003.patch
against trunk revision .
+1 @author. The patch does not contain any @author tags.
-1 tests included. 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.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 eclipse:eclipse. The patch built with eclipse:eclipse.
+1 findbugs. The patch does not introduce any new Findbugs (version 1.3.9)
warnings.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
+1 core tests. The patch passed unit tests in
hadoop-hdfs-project/hadoop-hdfs.
+1 contrib tests. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-HDFS-Build/3034//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/3034//console
This message is automatically generated.
> fuse_dfs: postpone libhdfs intialization until after fork
> ---------------------------------------------------------
>
> Key: HDFS-3808
> URL: https://issues.apache.org/jira/browse/HDFS-3808
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: fuse-dfs
> Affects Versions: 2.2.0-alpha
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Priority: Critical
> Attachments: HDFS-3808.001.patch, HDFS-3808.002.patch,
> HDFS-3808.003.patch
>
>
> {{libhdfs}} may create threads or initialize internal JNI data structures
> when it is used. So we should be careful to {{daemonize()}} before
> initializing {{libhdfs}}, not after.
> Unfortunately, fuse_dfs is doing just this -- initializing libhdfs in its
> {{main}} function, prior to calling {{fuse_main}} which does a {{daemonize}}.
> {{daemonize()}} does not preserve threads, because it is implemented by
> {{fork()}}ing and then continuing execution in the child and allowing the
> parent to {{exit()}}.
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