>From the log: 2010-10-27 14:28:21,436 INFO org.apache.zookeeper.ClientCnxn: Opening socket connection to server localhost/127.0.0.1:2181
It tries to connect to localhost:2181, which probably means that your mapreduce environment isn't pointing to HBase's configuration. This page should help you a bit: http://hbase.apache.org/docs/r0.20.6/api/org/apache/hadoop/hbase/mapreduce/package-summary.html#classpath J-D On Thu, Oct 28, 2010 at 12:11 AM, Shuja Rehman <[email protected]> wrote: > Hi All > > I am running map reduce job which will dump the data to hbase but when i run > the job, i am getting the following error message in map task log. > > 2010-10-27 14:28:20,486 INFO org.apache.hadoop.util.NativeCodeLoader: > Loaded the native-hadoop library > 2010-10-27 14:28:20,813 INFO org.apache.hadoop.metrics.jvm.JvmMetrics: > Initializing JVM Metrics with processName=MAP, sessionId= > 2010-10-27 14:28:21,406 INFO org.apache.zookeeper.ZooKeeper: Client > environment:zookeeper.version=3.3.1-942149, built on 05/07/2010 17:14 > GMT > 2010-10-27 14:28:21,407 INFO org.apache.zookeeper.ZooKeeper: Client > environment:host.name=app1.hsd1.wa.comcast.net. > 2010-10-27 14:28:21,407 INFO org.apache.zookeeper.ZooKeeper: Client > environment:java.version=1.6.0_20 > 2010-10-27 14:28:21,407 INFO org.apache.zookeeper.ZooKeeper: Client > environment:java.vendor=Sun Microsystems Inc. > 2010-10-27 14:28:21,407 INFO org.apache.zookeeper.ZooKeeper: Client > environment:java.home=/usr/lib/jvm/java-6-sun-1.6.0.20/jre > 2010-10-27 14:28:21,407 INFO org.apache.zookeeper.ZooKeeper: Client > environment:java.class.path=/usr/lib/hadoop-0.20/conf:/usr/lib/jvm/java-6-sun/lib/tools.jar:/usr/lib/hadoop-0.20:/usr/lib/hadoop-0.20/hadoop-core-0.20.2+737.jar:/usr/lib/hadoop-0.20/lib/aspectjrt-1.6.5.jar:/usr/lib/hadoop-0.20/lib/aspectjtools-1.6.5.jar:/usr/lib/hadoop-0.20/lib/commons-cli-1.2.jar:/usr/lib/hadoop-0.20/lib/commons-codec-1.4.jar:/usr/lib/hadoop-0.20/lib/commons-daemon-1.0.1.jar:/usr/lib/hadoop-0.20/lib/commons-el-1.0.jar:/usr/lib/hadoop-0.20/lib/commons-httpclient-3.0.1.jar:/usr/lib/hadoop-0.20/lib/commons-logging-1.0.4.jar:/usr/lib/hadoop-0.20/lib/commons-logging-api-1.0.4.jar:/usr/lib/hadoop-0.20/lib/commons-net-1.4.1.jar:/usr/lib/hadoop-0.20/lib/core-3.1.1.jar:/usr/lib/hadoop-0.20/lib/hadoop-fairscheduler-0.20.2+737.jar:/usr/lib/hadoop-0.20/lib/hsqldb-1.8.0.10.jar:/usr/lib/hadoop-0.20/lib/jackson-core-asl-1.5.2.jar:/usr/lib/hadoop-0.20/lib/jackson-mapper-asl-1.5.2.jar:/usr/lib/hadoop-0.20/lib/jasper-compiler-5.5.12.jar:/usr/lib/hadoop-0.20/lib/jasper-runtime-5.5.12.jar:/usr/lib/hadoop-0.20/lib/jets3t-0.6.1.jar:/usr/lib/hadoop-0.20/lib/jetty-6.1.14.jar:/usr/lib/hadoop-0.20/lib/jetty-util-6.1.14.jar:/usr/lib/hadoop-0.20/lib/junit-4.5.jar:/usr/lib/hadoop-0.20/lib/kfs-0.2.2.jar:/usr/lib/hadoop-0.20/lib/log4j-1.2.15.jar:/usr/lib/hadoop-0.20/lib/mockito-all-1.8.2.jar:/usr/lib/hadoop-0.20/lib/mysql-connector-java-5.0.8-bin.jar:/usr/lib/hadoop-0.20/lib/oro-2.0.8.jar:/usr/lib/hadoop-0.20/lib/servlet-api-2.5-6.1.14.jar:/usr/lib/hadoop-0.20/lib/slf4j-api-1.4.3.jar:/usr/lib/hadoop-0.20/lib/slf4j-log4j12-1.4.3.jar:/usr/lib/hadoop-0.20/lib/xmlenc-0.52.jar:/usr/lib/hadoop-0.20/lib/jsp-2.1/jsp-2.1.jar:/usr/lib/hadoop-0.20/lib/jsp-2.1/jsp-api-2.1.jar:/var/lib/hadoop-0.20/cache/mapred/mapred/local/taskTracker/root/jobcache/job_201010191227_0086/jars/classes:/var/lib/hadoop-0.20/cache/mapred/mapred/local/taskTracker/root/jobcache/job_201010191227_0086/jars/job.jar:/var/lib/hadoop-0.20/cache/mapred/mapred/local/taskTracker/root/jobcache/job_201010191227_0086/attempt_201010191227_0086_m_000000_0/work > 2010-10-27 14:28:21,407 INFO org.apache.zookeeper.ZooKeeper: Client > environment:java.library.path=/usr/lib/hadoop-0.20/lib/native/Linux-amd64-64:/var/lib/hadoop-0.20/cache/mapred/mapred/local/taskTracker/root/jobcache/job_201010191227_0086/attempt_201010191227_0086_m_000000_0/work > 2010-10-27 14:28:21,407 INFO org.apache.zookeeper.ZooKeeper: Client > environment:java.io.tmpdir=/var/lib/hadoop-0.20/cache/mapred/mapred/local/taskTracker/root/jobcache/job_201010191227_0086/attempt_201010191227_0086_m_000000_0/work/tmp > 2010-10-27 14:28:21,407 INFO org.apache.zookeeper.ZooKeeper: Client > environment:java.compiler=<NA> > 2010-10-27 14:28:21,407 INFO org.apache.zookeeper.ZooKeeper: Client > environment:os.name=Linux > 2010-10-27 14:28:21,407 INFO org.apache.zookeeper.ZooKeeper: Client > environment:os.arch=amd64 > 2010-10-27 14:28:21,407 INFO org.apache.zookeeper.ZooKeeper: Client > environment:os.version=2.6.32-21-server > 2010-10-27 14:28:21,407 INFO org.apache.zookeeper.ZooKeeper: Client > environment:user.name=mapred > 2010-10-27 14:28:21,407 INFO org.apache.zookeeper.ZooKeeper: Client > environment:user.home=/usr/lib/hadoop-0.20 > 2010-10-27 14:28:21,408 INFO org.apache.zookeeper.ZooKeeper: Client > environment:user.dir=/var/lib/hadoop-0.20/cache/mapred/mapred/local/taskTracker/root/jobcache/job_201010191227_0086/attempt_201010191227_0086_m_000000_0/work > 2010-10-27 14:28:21,410 INFO org.apache.zookeeper.ZooKeeper: > Initiating client connection, connectString=*localhost*:2181 > sessionTimeout=60000 > watcher=org.apache.hadoop.hbase.client.hconnectionmanager$clientzkwatc...@28ab54eb > 2010-10-27 14:28:21,436 INFO org.apache.zookeeper.ClientCnxn: Opening > socket connection to server localhost/127.0.0.1:2181 > 2010-10-27 14:28:21,442 WARN org.apache.zookeeper.ClientCnxn: Session > 0x0 for server null, unexpected error, closing socket connection and > attempting reconnect > java.net.ConnectException*: Connection refused* > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) > at > sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574) > at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1078) > 2010-10-27 14:28:22,288 INFO org.apache.zookeeper.ClientCnxn: Opening > socket connection to server localhost/0:0:0:0:0:0:0:1:2181 > 2010-10-27 14:28:22,289 WARN org.apache.zookeeper.ClientCnxn: Session > 0x0 for server null, unexpected error, closing socket connection and > attempting reconnect > java.net.ConnectException: Connection refused > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) > at > sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574) > at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1078) > > > *Here is the output of zookeeper Dump* > > > HBase tree in ZooKeeper is rooted at /hbase > Cluster up? true > Master address: 10.10.10.2:60000 > Region server holding ROOT: 10.10.10.4:60020 > Region servers: > - 10.10.10.2:60020 > - 10.10.10.4:60020 > - 10.10.10.3:60020 > Quorum Server Statistics: > - 10.10.10.2:2181 > Zookeeper version: 3.3.1-942149, built on 05/07/2010 17:14 GMT > Clients: > /10.10.10.2:47228[1](queued=0,recved=5892,sent=5892) > /127.0.0.1:42472[1](queued=0,recved=6097,sent=6097) > /10.10.10.2:56144[0](queued=0,recved=1,sent=0) > /10.10.10.3:39375[1](queued=0,recved=6033,sent=6035) > /10.10.10.2:47222[1](queued=0,recved=5925,sent=5928) > /10.10.10.2:47233[1](queued=0,recved=5916,sent=5916) > /10.10.10.4:54305[1](queued=0,recved=6027,sent=6029) > > Latency min/avg/max: 0/0/35 > Received: 36898 > Sent: 36905 > Outstanding: 0 > Zxid: 0x28 > Mode: standalone > Node count: 12 > > > I assume there is some configuration problem thats why job try to > connect to local host. Any one has idea how to solve it? > > Thanks in advance > > > -- > Regards > Shuja-ur-Rehman Baig > http://pk.linkedin.com/in/shujamughal > Cell: +92 3214207445 >
