This can happen for example when a client is killed when it has some
files open for write. In that case it is an expected error (the log
should really be at WARN or INFO level).
Raghu.
Albert Sunwoo wrote:
Hello Everyone,
I know there's been some chatter about this before but I am seeing the errors
below on just about every one of our nodes. Is there a definitive reason on
why these are occuring, is there something that we can do to prevent these?
2009-05-04 21:35:11,764 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode:
DatanodeRegistration(10.102.0.105:50010,
storageID=DS-991582569-127.0.0.1-50010-1240886381606, infoPort=50075,
ipcPort=50020):DataXceiver
java.io.EOFException: while trying to read 65557 bytes
at
org.apache.hadoop.hdfs.server.datanode.BlockReceiver.readToBuf(BlockReceiver.java:264)
at
org.apache.hadoop.hdfs.server.datanode.BlockReceiver.readNextPacket(BlockReceiver.java:308)
at
org.apache.hadoop.hdfs.server.datanode.BlockReceiver.receivePacket(BlockReceiver.java:372)
at
org.apache.hadoop.hdfs.server.datanode.BlockReceiver.receiveBlock(BlockReceiver.java:524)
at
org.apache.hadoop.hdfs.server.datanode.DataXceiver.writeBlock(DataXceiver.java:357)
at
org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:103)
at java.lang.Thread.run(Thread.java:619)
Followed by:
2009-05-04 21:35:20,891 INFO org.apache.hadoop.hdfs.server.datanode.DataNode:
PacketResponder blk_-7056150840276493498_10885 1 Exception
java.io.InterruptedIOException: Interruped while waiting for IO on channel
java.nio.channels.Socke
tChannel[connected local=/10.102.0.105:37293 remote=/10.102.0.106:50010]. 59756
millis timeout left.
at
org.apache.hadoop.net.SocketIOWithTimeout$SelectorPool.select(SocketIOWithTimeout.java:277)
at
org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:155)
at
org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:150)
at
org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:123)
at java.io.DataInputStream.readFully(DataInputStream.java:178)
at java.io.DataInputStream.readLong(DataInputStream.java:399)
at
org.apache.hadoop.hdfs.server.datanode.BlockReceiver$PacketResponder.run(BlockReceiver.java:853)
at java.lang.Thread.run(Thread.java:619)
Thanks,
Albert
