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
