Can you look at the jobtracker log or access jobtracker web ui ? It seems you can not connect to jobtracker according your log
"Caused by: java.io.IOException: Call to localhost/127.0.0.1:9001 failed on local exception: java.io.EOFException" On Fri, Aug 27, 2010 at 10:00 AM, rahul <rmalv...@apple.com> wrote: > Yes they are running. > > On Aug 26, 2010, at 6:59 PM, Jeff Zhang wrote: > >> Execute command jps in shell to see whether namenode and jobtracker is >> running correctly. >> >> >> >> On Fri, Aug 27, 2010 at 9:49 AM, rahul <rmalv...@apple.com> wrote: >>> Hi Jeff, >>> >>> I transferred the hadoop conf files to the pig/conf location but still i >>> get the same error. >>> >>> Does the issue is with the configuration files or with the hdfs files >>> system ? >>> >>> Can test the connection to hdfs(localhost/127.0.0.1:9001) in some way ? >>> >>> Steps I did : >>> >>> 1. I have formatted initially my local file system using the ./hadoop >>> namenode -format command. I believe this mounts the local file system to >>> HDFS. >>> 2. Then I configured the hadoop conf files and started ./start-all script. >>> 3. Started Pig with a custom pig script which should read hdfs as I passed >>> the HADOOP_CONF_DIR as parameter. >>> The command was java -cp $PIGDIR/pig.jar:$HADOOP_CONF_DIR >>> org.apache.pig.Main script1-hadoop.pig >>> >>> Please let me know if these step miss something ? >>> >>> Thanks, >>> Rahul >>> >>> >>> On Aug 26, 2010, at 6:33 PM, Jeff Zhang wrote: >>> >>>> Try to put the hadoop xml configuration file to pig/conf folder >>>> >>>> >>>> >>>> On Thu, Aug 26, 2010 at 6:22 PM, rahul <rmalv...@apple.com> wrote: >>>>> Hi Jeff, >>>>> >>>>> I have set the hadoop conf in class path by setting $HADOOP_CONF_DIR >>>>> variable. >>>>> >>>>> But I have both Pig and hadoop running at the same machine, so localhost >>>>> should not make a difference. >>>>> >>>>> So I have used all the default config setting for the core-site.xml, >>>>> hdfs-site.xml, mapred-site.xml, as per the hadoop tutorial. >>>>> >>>>> Please let me know if my understanding is correct ? >>>>> >>>>> I am attaching the conf files as well : >>>>> hdfs-site.xml: >>>>> >>>>> <?xml version="1.0"?> >>>>> <?xml-stylesheet type="text/xsl" href="configuration.xsl"?> >>>>> >>>>> <!-- Put site-specific property overrides in this file. --> >>>>> >>>>> <configuration> >>>>> <property> >>>>> <name>fs.default.name</name> >>>>> <value>hdfs://localhost:9000</value> >>>>> <description>The name of the default file system. A URI whose >>>>> scheme and authority determine the FileSystem implementation. The >>>>> uri's scheme determines the config property (fs.SCHEME.impl) naming >>>>> the FileSystem implementation class. The uri's authority is used to >>>>> determine the host, port, etc. for a filesystem.</description> >>>>> </property> >>>>> >>>>> <property> >>>>> <name>dfs.replication</name> >>>>> <value>1</value> >>>>> <description>Default block replication. >>>>> The actual number of replications can be specified when the file is >>>>> created. >>>>> The default is used if replication is not specified in create time. >>>>> </description> >>>>> </property> >>>>> >>>>> </configuration> >>>>> >>>>> core-site.xml >>>>> <?xml version="1.0"?> >>>>> <?xml-stylesheet type="text/xsl" href="configuration.xsl"?> >>>>> >>>>> <!-- Put site-specific property overrides in this file. --> >>>>> >>>>> <configuration> >>>>> <property> >>>>> <name>hadoop.tmp.dir</name> >>>>> <value>/Users/rahulmalviya/Documents/Hadoop/hadoop-0.21.0/hadoop-${user.name}</value> >>>>> <description>A base for other temporary directories.</description> >>>>> </property> >>>>> </configuration> >>>>> >>>>> mapred-site.xml >>>>> <?xml version="1.0"?> >>>>> <?xml-stylesheet type="text/xsl" href="configuration.xsl"?> >>>>> >>>>> <!-- Put site-specific property overrides in this file. --> >>>>> >>>>> <configuration> >>>>> <property> >>>>> <name>mapred.job.tracker</name> >>>>> <value>localhost:9001</value> >>>>> <description>The host and port that the MapReduce job tracker runs >>>>> at. If "local", then jobs are run in-process as a single map >>>>> and reduce task. >>>>> </description> >>>>> </property> >>>>> >>>>> <property> >>>>> <name>mapred.tasktracker.tasks.maximum</name> >>>>> <value>8</value> >>>>> <description>The maximum number of tasks that will be run simultaneously >>>>> by a >>>>> a task tracker >>>>> </description> >>>>> </property> >>>>> </configuration> >>>>> >>>>> Please let me know if there is a issue in my configurations ? Any input >>>>> is valuable for me. >>>>> >>>>> Thanks, >>>>> Rahul >>>>> >>>>> On Aug 26, 2010, at 6:10 PM, Jeff Zhang wrote: >>>>> >>>>>> Do you put the hadoop conf on classpath ? It seems you are still using >>>>>> local file system but conncect Hadoop's JobTracker. >>>>>> Make sure you set the correct configuration in core-site.xml >>>>>> hdfs-site.xml, mapred-site.xml, and put them on classpath. >>>>>> >>>>>> >>>>>> >>>>>> On Thu, Aug 26, 2010 at 5:32 PM, rahul <rmalv...@apple.com> wrote: >>>>>>> Hi , >>>>>>> >>>>>>> I am trying to integrate Pig with Hadoop for processing of jobs. >>>>>>> >>>>>>> I am able to run Pig in local mode and Hadoop with streaming api >>>>>>> perfectly. >>>>>>> >>>>>>> But when I try to run Pig with Hadoop I get follwong Error: >>>>>>> >>>>>>> Pig Stack Trace >>>>>>> --------------- >>>>>>> ERROR 2116: Unexpected error. Could not validate the output >>>>>>> specification for: >>>>>>> file:///Users/rahulmalviya/Documents/Pig/dev/main_merged_hdp_out >>>>>>> >>>>>>> org.apache.pig.impl.plan.PlanValidationException: ERROR 0: An >>>>>>> unexpected exception caused the validation to stop >>>>>>> at >>>>>>> org.apache.pig.impl.plan.PlanValidator.validate(PlanValidator.java:56) >>>>>>> at >>>>>>> org.apache.pig.impl.logicalLayer.validators.InputOutputFileValidator.validate(InputOutputFileValidator.java:49) >>>>>>> at >>>>>>> org.apache.pig.impl.logicalLayer.validators.InputOutputFileValidator.validate(InputOutputFileValidator.java:37) >>>>>>> at >>>>>>> org.apache.pig.impl.logicalLayer.validators.LogicalPlanValidationExecutor.validate(LogicalPlanValidationExecutor.java:89) >>>>>>> at org.apache.pig.PigServer.validate(PigServer.java:930) >>>>>>> at org.apache.pig.PigServer.compileLp(PigServer.java:910) >>>>>>> at org.apache.pig.PigServer.compileLp(PigServer.java:871) >>>>>>> at org.apache.pig.PigServer.compileLp(PigServer.java:852) >>>>>>> at org.apache.pig.PigServer.execute(PigServer.java:816) >>>>>>> at org.apache.pig.PigServer.access$100(PigServer.java:105) >>>>>>> at org.apache.pig.PigServer$Graph.execute(PigServer.java:1080) >>>>>>> at org.apache.pig.PigServer.executeBatch(PigServer.java:288) >>>>>>> at >>>>>>> org.apache.pig.tools.grunt.GruntParser.executeBatch(GruntParser.java:109) >>>>>>> at >>>>>>> org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:166) >>>>>>> at >>>>>>> org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:138) >>>>>>> at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:89) >>>>>>> at org.apache.pig.Main.main(Main.java:391) >>>>>>> Caused by: org.apache.pig.impl.plan.PlanValidationException: ERROR >>>>>>> 2116: Unexpected error. Could not validate the output specification >>>>>>> for: file:///Users/rahulmalviya/Documents/Pig/dev/main_merged_hdp_out >>>>>>> at >>>>>>> org.apache.pig.impl.logicalLayer.validators.InputOutputFileVisitor.visit(InputOutputFileVisitor.java:93) >>>>>>> at >>>>>>> org.apache.pig.impl.logicalLayer.LOStore.visit(LOStore.java:140) >>>>>>> at >>>>>>> org.apache.pig.impl.logicalLayer.LOStore.visit(LOStore.java:37) >>>>>>> at >>>>>>> org.apache.pig.impl.plan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:67) >>>>>>> at >>>>>>> org.apache.pig.impl.plan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:69) >>>>>>> at >>>>>>> org.apache.pig.impl.plan.DepthFirstWalker.depthFirst(DepthFirstWalker.java:69) >>>>>>> at >>>>>>> org.apache.pig.impl.plan.DepthFirstWalker.walk(DepthFirstWalker.java:50) >>>>>>> at >>>>>>> org.apache.pig.impl.plan.PlanVisitor.visit(PlanVisitor.java:51) >>>>>>> at >>>>>>> org.apache.pig.impl.plan.PlanValidator.validate(PlanValidator.java:50) >>>>>>> ... 16 more >>>>>>> Caused by: java.io.IOException: Call to localhost/127.0.0.1:9001 failed >>>>>>> on local exception: java.io.EOFException >>>>>>> at org.apache.hadoop.ipc.Client.wrapException(Client.java:775) >>>>>>> at org.apache.hadoop.ipc.Client.call(Client.java:743) >>>>>>> at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220) >>>>>>> at org.apache.hadoop.mapred.$Proxy0.getProtocolVersion(Unknown >>>>>>> Source) >>>>>>> at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:359) >>>>>>> at >>>>>>> org.apache.hadoop.mapred.JobClient.createRPCProxy(JobClient.java:429) >>>>>>> at org.apache.hadoop.mapred.JobClient.init(JobClient.java:423) >>>>>>> at org.apache.hadoop.mapred.JobClient.<init>(JobClient.java:410) >>>>>>> at org.apache.hadoop.mapreduce.Job.<init>(Job.java:50) >>>>>>> at >>>>>>> org.apache.pig.impl.logicalLayer.validators.InputOutputFileVisitor.visit(InputOutputFileVisitor.java:89) >>>>>>> ... 24 more >>>>>>> Caused by: java.io.EOFException >>>>>>> at java.io.DataInputStream.readInt(DataInputStream.java:375) >>>>>>> at >>>>>>> org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:501) >>>>>>> at org.apache.hadoop.ipc.Client$Connection.run(Client.java:446) >>>>>>> ================================================================================ >>>>>>> >>>>>>> Did anyone got the same error. I think it related to connection between >>>>>>> pig and hadoop. >>>>>>> >>>>>>> Can someone tell me how to connect Pig and hadoop. >>>>>>> >>>>>>> Thanks. >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Best Regards >>>>>> >>>>>> Jeff Zhang >>>>> >>>>> >>>> >>>> >>>> >>>> -- >>>> Best Regards >>>> >>>> Jeff Zhang >>> >>> >> >> >> >> -- >> Best Regards >> >> Jeff Zhang > > -- Best Regards Jeff Zhang