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
