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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-2416) [hbase] IOException: File does not exist
Date Thu, 13 Dec 2007 04:57:43 GMT
[hbase] IOException: File does not exist
----------------------------------------

                 Key: HADOOP-2416
                 URL: https://issues.apache.org/jira/browse/HADOOP-2416
             Project: Hadoop
          Issue Type: Bug
          Components: contrib/hbase
            Reporter: stack


Two fellas today on two unrelated clusters had versions of the below:

{code}
      <bryanduxbury>	2007-12-12 08:28:22,235 ERROR org.apache.hadoop.hbase.HRegionServer:
Compaction failed for region spider_pages,10_149317711,1197468834206
[13:01]	<bryanduxbury>	java.io.IOException: java.io.IOException: File does not exist
[13:01]	<bryanduxbury>	at org.apache.hadoop.dfs.FSDirectory.getFileInfo(FSDirectory.java:489)
[13:01]	<bryanduxbury>	at org.apache.hadoop.dfs.FSNamesystem.getFileInfo(FSNamesystem.java:1360)
[13:01]	<bryanduxbury>	at org.apache.hadoop.dfs.NameNode.getFileInfo(NameNode.java:428)
[13:01]	<bryanduxbury>	at sun.reflect.GeneratedMethodAccessor15.invoke(Unknown Source)
[13:01]	<bryanduxbury>	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[13:01]	<bryanduxbury>	at java.lang.reflect.Method.invoke(Method.java:597)
[13:01]	<bryanduxbury>	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:379)
[13:01]	<bryanduxbury>	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:596)
[13:01]	<bryanduxbury>	at sun.reflect.GeneratedConstructorAccessor10.newInstance(Unknown
Source)
[13:01]	<bryanduxbury>	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
[13:01]	<bryanduxbury>	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
[13:01]	<bryanduxbury>	at org.apache.hadoop.hbase.RemoteExceptionHandler.decodeRemoteException(RemoteExceptionHandler.java:82)
[13:01]	<bryanduxbury>	at org.apache.hadoop.hbase.RemoteExceptionHandler.checkIOException(RemoteExceptionHandler.java:48)
[13:01]	<bryanduxbury>	at org.apache.hadoop.hbase.HRegionServer$Compactor.run(HRegionServer.java:385)
{code}

Odd is that the file thats missing's name is not cited.

The other instance showed in the webui.  Seemed to be problem with an HStoreFile in.META.
region.  I was unable to select content from the .META. table -- it was returning null rows.

In both cases a restart fixed things again.

Since all state is out in hdfs and the in-memory maps are made from the hdfs state, something
must not be getting updated on compaction/split or flush.

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