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From "Christian Kunz (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-2020) Index is out of bound when restarting datanode after 5 hours
Date Wed, 10 Oct 2007 22:25:50 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-2020?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Christian Kunz updated HADOOP-2020:
-----------------------------------

    Summary: Index is out of bound when restarting datanode after 5 hours  (was: Index is
out of bound when restarting datanode after 2 hours)

> Index is out of bound when restarting datanode after 5 hours
> ------------------------------------------------------------
>
>                 Key: HADOOP-2020
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2020
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>            Reporter: Christian Kunz
>            Priority: Blocker
>             Fix For: 0.15.0
>
>
> I was told that dfs recovers when datanodes go down and come back after a while, even
when some blocks went missing.
> As a test I stopped the datanode server on a single-node cluster and restarted after
5 hours.
> Dfs did not recover because of the following repeated exception:
> 2007-10-10 02:42:52,808 INFO org.apache.hadoop.ipc.Server: IPC Server handler 5 on 8020,
call blockReport(127.0.0.1:50010, [Lorg.apache.hadoop.dfs.Block;@ecb8c4) from 127.0.0.1:49678:
error: java.io.IOException: java.lang.AssertionError: Index is out of bound
> java.io.IOException: java.lang.AssertionError: Index is out of bound
>     at org.apache.hadoop.dfs.BlocksMap$BlockInfo.getNext(BlocksMap.java:77)
>     at org.apache.hadoop.dfs.DatanodeDescriptor$BlockIterator.next(DatanodeDescriptor.java:185)
>     at org.apache.hadoop.dfs.DatanodeDescriptor$BlockIterator.next(DatanodeDescriptor.java:170)
>     at org.apache.hadoop.dfs.DatanodeDescriptor.reportDiff(DatanodeDescriptor.java:325)
>     at org.apache.hadoop.dfs.FSNamesystem.processReport(FSNamesystem.java:2111)
>     at org.apache.hadoop.dfs.NameNode.blockReport(NameNode.java:621)
>     at sun.reflect.GeneratedMethodAccessor18.invoke(Unknown Source)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:340)
>     at org.apache.hadoop.ipc.Server$Handler.run(Server.java:609)

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