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From "Lohit Vijayarenu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3802) IPC - Heartbeat exceptions filling up log files
Date Mon, 21 Jul 2008 17:51:32 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12615331#action_12615331
] 

Lohit Vijayarenu commented on HADOOP-3802:
------------------------------------------

There is a fix for in HADOOP-3758 and will be release in 0.17.2.

> IPC - Heartbeat exceptions filling up log files
> -----------------------------------------------
>
>                 Key: HADOOP-3802
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3802
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: ipc
>    Affects Versions: 0.17.1
>         Environment: Linux 2.6.17-1.2142_FC4smp #1 SMP Tue Jul 11 22:59:20 EDT 2006 x86_64
x86_64 x86_64 GNU/Linux -- Fedora Core 4
>            Reporter: Dima Brodsky
>
> We have a datanode (10.0.0.93) that is in a semi-live state.  An ssh session is able
to do a connect but is unable to send or receive any data.  The connection is closed immediately
after the connection is established.  Because of this, the name node's logs are full of the
following message:
> 2008-07-21 09:36:10,800 INFO org.apache.hadoop.ipc.Server: IPC Server handler 1on 9000,
call sendHeartbeat(10.0.0.193:50010, 917638877184, 20480, 644100882925, 0, 0) from 10.0.0.193:55908:
error: org.apache.hadoop.dfs.IncorrectVersionException: Unexpected version of data node. Reported:
-11. Expecting = -13.
> org.apache.hadoop.dfs.IncorrectVersionException: Unexpected version of data node. Reported:
-11. Expecting = -13.
>         at org.apache.hadoop.dfs.NameNode.verifyVersion(NameNode.java:682)
>         at org.apache.hadoop.dfs.NameNode.verifyRequest(NameNode.java:669)
>         at org.apache.hadoop.dfs.NameNode.sendHeartbeat(NameNode.java:557)
>         at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:585)
>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:446)
>         at org.apache.hadoop.ipc.Server$Handler.run(Server.java:896)
> Approximately generating 100MB a minute.

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