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From Vimal Jain <vkj...@gmail.com>
Subject Exception in data node log
Date Fri, 31 Jan 2014 11:30:26 GMT
Hi,
I have set up hbase in pseudo distributed mode.
I keep on getting below exceptions in data node log.
Is it a problem ?

( Hadoop version - 1.1.2 , Hbase version - 0.94.7 )

Please help.


java.net.SocketTimeoutException: 480000 millis timeout while waiting for
channel to be ready for write. ch :
java.nio.channels.SocketChannel[connected local=/192.168.20.30:50010remote=/
192.168.20.30:38188]
        at
org.apache.hadoop.net.SocketIOWithTimeout.waitForIO(SocketIOWithTimeout.java:246)
        at
org.apache.hadoop.net.SocketOutputStream.waitForWritable(SocketOutputStream.java:159)
        at
org.apache.hadoop.net.SocketOutputStream.transferToFully(SocketOutputStream.java:198)
        at
org.apache.hadoop.hdfs.server.datanode.BlockSender.sendChunks(BlockSender.java:392)
        at
org.apache.hadoop.hdfs.server.datanode.BlockSender.sendBlock(BlockSender.java:490)
        at
org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:202)
        at
org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:104)
        at java.lang.Thread.run(Thread.java:662)

2014-01-31 00:10:28,951 ERROR
org.apache.hadoop.hdfs.server.datanode.DataNode: DatanodeRegistration(
192.168.20.30:50010,
storageID=DS-1816106352-192.168.20.30-50010-1369314076237, infoPort=50075,
ipcPort=50020):DataXceiver
java.net.SocketTimeoutException: 480000 millis timeout while waiting for
channel to be ready for write. ch :
java.nio.channels.SocketChannel[connected local=/192.168.20.30:50010remote=/
192.168.20.30:38188]
        at
org.apache.hadoop.net.SocketIOWithTimeout.waitForIO(SocketIOWithTimeout.java:246)
        at
org.apache.hadoop.net.SocketOutputStream.waitForWritable(SocketOutputStream.java:159)
        at
org.apache.hadoop.net.SocketOutputStream.transferToFully(SocketOutputStream.java:198)
        at
org.apache.hadoop.hdfs.server.datanode.BlockSender.sendChunks(BlockSender.java:392)
        at
org.apache.hadoop.hdfs.server.datanode.BlockSender.sendBlock(BlockSender.java:490)
        at
org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:202)
        at
org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:104)
        at java.lang.Thread.run(Thread.java:662)

-- 
Thanks and Regards,
Vimal Jain

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