Hi, Increasing the open file limit solved the issue. Thank you. On Fri, May 4, 2012 at 9:39 PM, Mapred Learn <mapred.le...@gmail.com> wrote:
> Check your number of blocks in the cluster. > > This also indicates that your datanodes are more full than they should be. > > Try deleting unnecessary blocks. > > On Fri, May 4, 2012 at 7:40 AM, Mohit Anchlia <mohitanch...@gmail.com > >wrote: > > > 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 > > > > > > -- https://github.com/zinnia-phatak-dev/Nectar
