Hi Jeff, It is not causing it to re-register to the NN.
The PacketResponder gets interrupted when the write pipeline fails in certain situations - the interruption should cause the pipeline to tear down, and then the client will retry with a new pipeline (minus the offending node). -Todd On Sun, Jul 4, 2010 at 10:30 PM, Jeff Zhang <zjf...@gmail.com> wrote: > Hi all, > > In my data node logs, it says PacketResponder is interrupt,and it cuase my > data node to re-register to namenode. > The following is the log: (Anyone has any clues ? Thanks ) > > 868_1195229 java.io.EOFException: while trying to read 65557 bytes > 2010-07-05 00:00:36,719 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: PacketResponder > blk_-6478248321374328051_1195260 0 : Thread is interrupted. > 2010-07-05 00:00:36,720 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: PacketResponder 0 for block > blk_-6478248321374328051_1195260 terminating > 2010-07-05 00:00:36,720 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: Exception in receiveBlock > for block blk_-4909137647091005195_1195309 java.io.EOFException: while > trying to read 65557 bytes > 2010-07-05 00:00:36,720 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: PacketResponder > blk_8591229225807253868_1195229 0 : Thread is interrupted. > 2010-07-05 00:00:36,720 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: PacketResponder 0 for block > blk_8591229225807253868_1195229 terminating > 2010-07-05 00:00:36,720 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: PacketResponder > blk_-4909137647091005195_1195309 1 : Thread is interrupted. > 2010-07-05 00:00:36,720 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: PacketResponder 1 for block > blk_-4909137647091005195_1195309 terminating > 2010-07-05 00:00:36,721 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: writeBlock > blk_-6478248321374328051_1195260 received exception java.io.EOFException: > while trying to read 65557 bytes > 2010-07-05 00:00:36,721 ERROR > org.apache.hadoop.hdfs.server.datanode.DataNode: DatanodeRegistration( > 10.1.8.143:50010, storageID=DS-1665371331-127.0.0.1-50010-1278047732176, > 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:309) > at > org.apache.hadoop.hdfs.server.datanode.BlockReceiver.readNextPacket(BlockReceiver.java:353) > at > org.apache.hadoop.hdfs.server.datanode.BlockReceiver.receivePacket(BlockReceiver.java:409) > at > org.apache.hadoop.hdfs.server.datanode.BlockReceiver.receiveBlock(BlockReceiver.java:617) > at > org.apache.hadoop.hdfs.server.datanode.DataXceiver.opWriteBlock(DataXceiver.java:352) > at > org.apache.hadoop.hdfs.protocol.DataTransferProtocol$Receiver.opWriteBlock(DataTransferProtocol.java:390) > at > org.apache.hadoop.hdfs.protocol.DataTransferProtocol$Receiver.processOp(DataTransferProtocol.java:331) > at > org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:111) > -- > Best Regards > > Jeff Zhang > -- Todd Lipcon Software Engineer, Cloudera
