I am seeing this on hadoop 2.4.0 version. Thanks for your suggestions, i will try those and let you know if they help !
On Sat, May 16, 2015 at 1:57 AM, Steve Loughran <[email protected]> wrote: > What version of Hadoop are you seeing this on? > > > On 15 May 2015, at 20:03, Puneet Kapoor <[email protected]> > wrote: > > Hey, > > Did you find any solution for this issue, we are seeing similar logs in > our Data node logs. Appreciate any help. > > > > > > 2015-05-15 10:51:43,615 ERROR > org.apache.hadoop.hdfs.server.datanode.DataNode: > NttUpgradeDN1:50010:DataXceiver error processing WRITE_BLOCK operation > src: /192.168.112.190:46253 dst: /192.168.151.104:50010 > java.net.SocketTimeoutException: 60000 millis timeout while waiting for > channel to be ready for read. ch : > java.nio.channels.SocketChannel[connected local=/192.168.151.104:50010 > remote=/192.168.112.190:46253] > at > org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:164) > at > org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:161) > at > org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:131) > at java.io.BufferedInputStream.fill(Unknown Source) > at java.io.BufferedInputStream.read1(Unknown Source) > at java.io.BufferedInputStream.read(Unknown Source) > at java.io.DataInputStream.read(Unknown Source) > at org.apache.hadoop.io.IOUtils.readFully(IOUtils.java:192) > 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:446) > at > org.apache.hadoop.hdfs.server.datanode.BlockReceiver.receiveBlock(BlockReceiver.java:702) > at > org.apache.hadoop.hdfs.server.datanode.DataXceiver.writeBlock(DataXceiver.java:742) > at > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opWriteBlock(Receiver.java:124) > at > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:71) > at > org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:232) > at java.lang.Thread.run(Unknown Source) > > > That's being logged @ error level in DN. It doesn't mean the DN has > crashed, only that it timed out waiting for data: something has gone wrong > elsewhere. > > https://issues.apache.org/jira/browse/HDFS-693 > > > there's a couple of properties you can do to extend timeouts > > <property> > > <name>dfs.socket.timeout</name> > > <value>20000</value> > > </property> > > > <property> > > <name>dfs.datanode.socket.write.timeout</name> > > <value>20000</value> > > </property> > > > > You can also increase the number of data node tranceiver threads to handle > data IO across the network > > > <property> > <name>dfs.datanode.max.xcievers</name> > <value>4096</value> > </property> > > Yes, that property has that explicit spellinng, it's easy to get wrong > >
