Please see: http://hbase.apache.org/book.html#dfs.datanode.max.xcievers
On Fri, May 4, 2012 at 5:46 AM, madhu phatak <phatak....@gmail.com> wrote: > Hi, > We are running a three node cluster . From two days whenever we copy file > to hdfs , it is throwing java.IO.Exception Bad connect ack with > firstBadLink . I searched in net, but not able to resolve the issue. The > following is the stack trace from datanode log > > 2012-05-04 18:08:08,868 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: writeBlock > blk_-7520371350112346377_50118 received exception java.net.SocketException: > Connection reset > 2012-05-04 18:08:08,869 ERROR > org.apache.hadoop.hdfs.server.datanode.DataNode: DatanodeRegistration( > 172.23.208.17:50010, > storageID=DS-1340171424-172.23.208.17-50010-1334672673051, infoPort=50075, > ipcPort=50020):DataXceiver > java.net.SocketException: Connection reset > at java.net.SocketInputStream.read(SocketInputStream.java:168) > at java.io.BufferedInputStream.read1(BufferedInputStream.java:256) > at java.io.BufferedInputStream.read(BufferedInputStream.java:317) > at java.io.DataInputStream.read(DataInputStream.java:132) > at > > org.apache.hadoop.hdfs.server.datanode.BlockReceiver.readToBuf(BlockReceiver.java:262) > at > > org.apache.hadoop.hdfs.server.datanode.BlockReceiver.readNextPacket(BlockReceiver.java:309) > at > > org.apache.hadoop.hdfs.server.datanode.BlockReceiver.receivePacket(BlockReceiver.java:373) > at > > org.apache.hadoop.hdfs.server.datanode.BlockReceiver.receiveBlock(BlockReceiver.java:525) > 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:662) > > > It will be great if some one can point to the direction how to solve this > problem. > > -- > https://github.com/zinnia-phatak-dev/Nectar >
