hbase在做count时，一个hadoop的datanode节点出现网卡假死，count超时后网卡又恢复正常，datanode节点得日志报如下错误：
org.apache.hadoop.hdfs.server.datanode.DataNode: PacketResponder: BP-1965446308-192.168.15.35
-1498918077927:blk_1073743652_2952, type=HAS_DOWNSTREAM_IN_PIPELINE
java.io
.EOFException: Premature EOF: no length prefix available
at org.apache.hadoop.hdfs.protocolPB.PBHelper.vintPrefixed(PBHelper.java:2282)
at org.apache.hadoop.hdfs.protocol.datatransfer.PipelineAck.readFields(PipelineAck.java:244)
at org.apache.hadoop.hdfs.server.datanode.BlockReceiver$PacketResponder.run(BlockReceiver.java:1285)
at java.lang.Thread.run(Thread.java:745)
2017-07-12 22:51:48,354 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Exception for BP-1965446308-192.168.15.35
-1498918077927:blk_1073743652_2952
java.io
.IOException: Premature EOF from inputStream
at org.apache.hadoop.io
.IOUtils.readFully(IOUtils.java:201)
at org.apache.hadoop.hdfs.protocol.datatransfer.PacketReceiver.doReadFully(PacketReceiver.java:213)
at org.apache.hadoop.hdfs.protocol.datatransfer.PacketReceiver.doRead(PacketReceiver.java:134)
at org.apache.hadoop.hdfs.protocol.datatransfer.PacketReceiver.receiveNextPacket(PacketReceiver.java:109)
at org.apache.hadoop.hdfs.server.datanode.BlockReceiver.receivePacket(BlockReceiver.java:501)
at org.apache.hadoop.hdfs.server.datanode.BlockReceiver.receiveBlock(BlockReceiver.java:897)
at org.apache.hadoop.hdfs.server.datanode.DataXceiver.writeBlock(DataXceiver.java:802)
at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opWriteBlock(Receiver.java:137)
at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:74)
at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:253)
at java.lang.Thread.run(Thread.java:745)
2017-07-12 22:51:48,356 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: IOException in BlockReceiver.run():
java.io
.InterruptedIOException: Interrupted while waiting for IO on channel java.nio.channels.SocketChannel[connected local=/192.168.15.31:50010
remote=/192.168.15.32:43398
]. 480000 millis timeout left.
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