Hi Jeff, I can connect to the jobtracker web UI using the following URL : http://localhost:50030/jobtracker.jsp
And also I can see jobs which I ran directly using the streaming api on hadoop. I also see it tries to connect to localhost/127.0.0.1:9001 which I have specified in the hadoop conf file and I have also tried changing this location to localhost:50030 but still the error remains the same. Can you suggest something further ? Thanks, Rahul On Aug 26, 2010, at 7:07 PM, Jeff Zhang wrote: > 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