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From Daniel Iancu <daniel.ia...@1and1.ro>
Subject file is already being created by NN_Recovery
Date Thu, 07 Apr 2011 16:35:17 GMT
Hello everybody
We've run into this, now popular, error on our cluster

2011-04-07 16:28:00,654 WARN IPC Server handler 0 on 8020 
org.apache.hadoop.hdfs.StateChange - DIR* NameSystem.startFile: failed 
to create file 

DFSClient_hb_m_search-namenode-eu002.v300.gmx.net:60000_1302186078300 on 
client, because this file is already being created by 
NN_Recovery on

I've read a couple of threads around it, still it seems that nobody 
pinpointed the cause of it? The only solution here remains to delete the 
log file and lose data ?

I've seen  this error on almost any cluster we've installed so far, 
deleting logs was not concerning since all were test clusters. Now we 
got this on the production cluster, and strange, this cluster was just 
installed, there is no table and no data, no activity there. So what 
logs is master trying to create?

We are running the latest CDH3B4 from Cloudera.

Thanks for any hints,

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