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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10203) Connection leak in Jets3tNativeFileSystemStore#retrieveMetadata
Date Sat, 04 Jan 2014 13:05:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13862295#comment-13862295

Hadoop QA commented on HADOOP-10203:

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  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
                        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:green}+1 core tests{color}.  The patch passed unit tests in hadoop-common-project/hadoop-common.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HADOOP-Build/3399//testReport/
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/3399//console

This message is automatically generated.

> Connection leak in Jets3tNativeFileSystemStore#retrieveMetadata 
> ----------------------------------------------------------------
>                 Key: HADOOP-10203
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10203
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs/s3
>         Environment: CDH 2.0.0-cdh4.5.0 (30821ec616ee7a21ee8447949b7c6208a8f1e7d8) 
>            Reporter: Andrei Savu
>            Assignee: Andrei Savu
>         Attachments: HADOOP-10203-trunk.patch, HADOOP-10203.patch
> Jets3tNativeFileSystemStore#retrieveMetadata  is leaking connections. 
> This affects any client that tries to read many small files very quickly (e.g. distcp
from s3 to hdfs with small files blocks due to connection pool starvation). 
> This is not a problem for larger files because when the GC runs any connection that's
out of scope will be released in #finalize().
> We are seeing the following log messages as a symptom of this problem:
> {noformat}
> 13/12/26 13:40:01 WARN httpclient.HttpMethodReleaseInputStream: Attempting to release
HttpMethod in finalize() as its response data stream has gone out of scope. This attempt will
not always succeed and cannot be relied upon! Please ensure response data streams are always
fully consumed or closed to avoid HTTP connection starvation.
> 13/12/26 13:40:01 WARN httpclient.HttpMethodReleaseInputStream: Successfully released
HttpMethod in finalize(). You were lucky this time... Please ensure response data streams
are always fully consumed or closed.
> {noformat}

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