Hi,
when i tried to run some Jobs on my hadoop cluster, i found the
following error in my datanode logs:
(the german means connection reseted by peer)
2015-07-17 16:33:45,671 ERROR
org.apache.hadoop.hdfs.server.datanode.DataNode:
BlockSender.sendChunks() exception:
java.io.IOException: Die Verbindung wurde vom Kommunikationspartner
zurückgesetzt
at sun.nio.ch.FileChannelImpl.transferTo0(Native Method)
at
sun.nio.ch.FileChannelImpl.transferToDirectly(FileChannelImpl.java:443)
at sun.nio.ch.FileChannelImpl.transferTo(FileChannelImpl.java:575)
at
org.apache.hadoop.net.SocketOutputStream.transferToFully(SocketOutputStream.java:223)
at
org.apache.hadoop.hdfs.server.datanode.BlockSender.sendPacket(BlockSender.java:559)
at
org.apache.hadoop.hdfs.server.datanode.BlockSender.sendBlock(BlockSender.java:728)
at
org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:496)
at
org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opReadBlock(Receiver.java:116)
at
org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:71)
at
org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:235)
at java.lang.Thread.run(Thread.java:745)
i already googled this but i could not find anything...
This appears several times and then the error vanishes and the jobs
proceeds normally, and the job does not fail. This happens on various
nodes. I already formated my namenode but that did not fix it.
Thanks and greetings
Marius
