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From "Uma Maheswara Rao G (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7086) Retrying socket connection failure times can be made as configurable
Date Wed, 01 Feb 2012 17:04:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7086?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13197956#comment-13197956
] 

Uma Maheswara Rao G commented on HADOOP-7086:
---------------------------------------------

Hi Robert and Deva, 
Sorry for coming late. This particular issue has already covered as part of HA branch. HADOOP-7932.
Did not notice this bug before, otherwise i could have made this issue as subtask of HADOOP-7454.
                
> Retrying socket connection failure times can be made as configurable
> --------------------------------------------------------------------
>
>                 Key: HADOOP-7086
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7086
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: conf
>         Environment: NA
>            Reporter: Devaraj K
>            Assignee: Devaraj K
>            Priority: Minor
>             Fix For: 0.24.0
>
>         Attachments: HADOOP-7086-1.patch, HADOOP-7086.patch, common-3899.patch
>
>   Original Estimate: 72h
>  Remaining Estimate: 72h
>
> Retrying socket connection failure times are hard coded as 45 and it is giving the retryring
message for 45 times as below. 
> 2011-01-04 15:14:30,700 INFO ipc.Client (Client.java:handleConnectionFailure(487)) -
Retrying connect to server: /10.18.52.124:50020. Already tried 1 time(s).
> This can be made as configurable and also we can keep the default value as 45. If the
user wants to decrease/increase,  they can add this configurable property otherwise it can
continue with the default value.
> common\src\java\org\apache\hadoop\ipc\Client.java:
> -----------------------------------------------------------------------
> private synchronized void setupConnection() throws IOException {
>       short ioFailures = 0;
>       short timeoutFailures = 0;
>       while (true) {
>         try {
>           this.socket = socketFactory.createSocket();
>           this.socket.setTcpNoDelay(tcpNoDelay);
>           // connection time out is 20s
>           NetUtils.connect(this.socket, remoteId.getAddress(), 20000);
>           if (rpcTimeout > 0) {
>             pingInterval = rpcTimeout;  // rpcTimeout overwrites pingInterval
>           }
>           this.socket.setSoTimeout(pingInterval);
>           return;
>         } catch (SocketTimeoutException toe) {
>           /*
>            * The max number of retries is 45, which amounts to 20s*45 = 15
>            * minutes retries.
>            */
>           handleConnectionFailure(timeoutFailures++, 45, toe);
>         } catch (IOException ie) {
>           handleConnectionFailure(ioFailures++, maxRetries, ie);
>         }
>       }
>     }

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