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From Siddharth Tiwari <siddharth.tiw...@live.com>
Subject Strange error on Datanodes
Date Mon, 02 Dec 2013 15:19:10 GMT
Hi team
I see following errors on datanodes. What is the reason for this and how can it will be resolved:-
2013-12-02 13:11:36,441 WARN org.apache.hadoop.hdfs.DFSClient: DFSOutputStream ResponseProcessor
exception  for block BP-1854340821-10.238.9.151-1385733655875:blk_-2927699636194035560_63092
java.net.SocketTimeoutException: 65000 millis timeout while waiting for channel to be ready
for read. ch : java.nio.channels.SocketChannel[connected local=/10.238.10.43:54040 remote=/10.238.10.43:50010]
	at org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:165)
	at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:156)
	at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:129)
	at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:117)
	at java.io.FilterInputStream.read(FilterInputStream.java:83)
	at java.io.FilterInputStream.read(FilterInputStream.java:83)
	at org.apache.hadoop.hdfs.protocol.HdfsProtoUtil.vintPrefixed(HdfsProtoUtil.java:169)
	at org.apache.hadoop.hdfs.protocol.datatransfer.PipelineAck.readFields(PipelineAck.java:114)
	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer$ResponseProcessor.run(DFSOutputStream.java:694)
2013-12-02 13:12:06,572 INFO org.apache.hadoop.mapred.TaskLogsTruncater: Initializing logs'
truncater with mapRetainSize=-1 and reduceRetainSize=-1
2013-12-02 13:12:06,581 ERROR org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException
as:hadoop (auth:SIMPLE) cause:java.io.IOException: All datanodes 10.238.10.43:50010 are bad.
Aborting...
2013-12-02 13:12:06,581 WARN org.apache.hadoop.mapred.Child: Error running child
java.io.IOException: All datanodes 10.238.10.43:50010 are bad. Aborting...
	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.setupPipelineForAppendOrRecovery(DFSOutputStream.java:959)
	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.processDatanodeError(DFSOutputStream.java:779)
	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:448)
2013-12-02 13:12:06,583 INFO org.apache.hadoop.mapred.Task: Runnning cleanup for the task

*------------------------*

Cheers !!!

Siddharth Tiwari

Have a refreshing day !!!
"Every duty is holy, and devotion to duty is the highest form of worship of God.” 

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