Grokbase Groups HBase user June 2010
FAQ
Have you seen this error in shutting down a region server:

2010-06-14 17:17:39,521 ERROR org.apache.hadoop.hdfs.DFSClient: Exception closing file /hbase/doc/compaction.dir/1341061960/4230672672594086608 : java.net.SocketTimeoutException: 9000 millis timeout while waiting for channel to be ready for read. ch : java.nio.channels.SocketChannel[connected local=/10.0.1.5:48512 remote=/10.0.1.5:50010]
java.net.SocketTimeoutException: 9000 millis timeout while waiting for channel to be ready for read. ch : java.nio.channels.SocketChannel[connected local=/10.0.1.5:48512 remote=/10.0.1.5:50010]
at org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:164)
at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:155)
at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:128)
at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:116)
at java.io.DataInputStream.readByte(DataInputStream.java:248)
at org.apache.hadoop.io.WritableUtils.readVLong(WritableUtils.java:298)
at org.apache.hadoop.io.WritableUtils.readVInt(WritableUtils.java:319)
at org.apache.hadoop.io.Text.readString(Text.java:400)
at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.createBlockOutputStream(DFSClient.java:2901)
at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2826)
at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2000(DFSClient.java:2102)
at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2288)


Any thoughts as to a possible cause? I see this on several of my region server logs when I shutdown today (I wanted to move my JVM to jdk1.6.0_20). Sometimes more than once in a single log.

Dave

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postedJun 15, '10 at 12:45a
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Buttler, David: 1 post

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