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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9503) Allow a configurable sleep between IPC client connect timeouts
Date Thu, 25 Apr 2013 20:18:16 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13642157#comment-13642157
] 

Hadoop QA commented on HADOOP-9503:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12580566/9503.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: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/2476//testReport/
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/2476//console

This message is automatically generated.
                
> Allow a configurable sleep between IPC client connect timeouts
> --------------------------------------------------------------
>
>                 Key: HADOOP-9503
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9503
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: ipc
>    Affects Versions: 2.0.5-beta
>            Reporter: Varun Sharma
>            Priority: Minor
>         Attachments: 9503.patch
>
>
> HADOOP-9106 introduced a configurable retry timeout when there are socket timeouts errors.
> Since the IPC client is used by a wide variety of applications including realtime/online
ones (like hbase + hdfs), we sometimes need fast fail timeouts which are < 3 seconds. Achieving
such a timeout for connect is very difficult with a 1 second sleep in b/w retries. It would
be good to have a configurable parameter to reduce this sleep. 

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