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HBase, mail # user - Exception in data node log


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Re: Exception in data node log
Jean-Marc Spaggiari 2014-02-01, 01:57
Hi Vimal,

Are those logs into HBase logs? Or into HDFS logs? Sound like you have some
HDFS issues (slow disks, or running on VM, etc.)

JM
2014-01-31 Vimal Jain <[EMAIL PROTECTED]>:

> 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=/192.168.20.30:50010
> remote=/
> 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=/192.168.20.30:50010
> remote=/
> 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
>