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From aaron morton <aa...@thelastpickle.com>
Subject Re: pig + hadoop
Date Wed, 20 Apr 2011 01:30:19 GMT
Am guessing but here goes. Looks like the cassandra RPC port is not set, did you follow these
steps in contrib/pig/README.txt

Finally, set the following as environment variables (uppercase,
underscored), or as Hadoop configuration variables (lowercase, dotted):
* PIG_RPC_PORT or cassandra.thrift.port : the port thrift is listening on 
* PIG_INITIAL_ADDRESS or cassandra.thrift.address : initial address to connect to
* PIG_PARTITIONER or cassandra.partitioner.class : cluster partitioner

Hope that helps. 
Aaron


On 20 Apr 2011, at 11:28, pob wrote:

> Hello, 
> 
> I did cluster configuration by http://wiki.apache.org/cassandra/HadoopSupport. When I
run pig example-script.pig 
> -x local, everything is fine and i get correct results.
> 
> Problem is occurring with -x mapreduce 
> 
> Im getting those errors :>
> 
> 
> 2011-04-20 01:24:21,791 [main] ERROR org.apache.pig.tools.pigstats.PigStats - ERROR:
java.lang.NumberFormatException: null
> 2011-04-20 01:24:21,792 [main] ERROR org.apache.pig.tools.pigstats.PigStatsUtil - 1 map
reduce job(s) failed!
> 2011-04-20 01:24:21,793 [main] INFO  org.apache.pig.tools.pigstats.PigStats - Script
Statistics: 
> 
> Input(s):
> Failed to read data from "cassandra://Keyspace1/Standard1"
> 
> Output(s):
> Failed to produce result in "hdfs://ip:54310/tmp/temp-1383865669/tmp-1895601791"
> 
> Counters:
> Total records written : 0
> Total bytes written : 0
> Spillable Memory Manager spill count : 0
> Total bags proactively spilled: 0
> Total records proactively spilled: 0
> 
> Job DAG:
> job_201104200056_0005   ->      null,
> null    ->      null,
> null
> 
> 
> 2011-04-20 01:24:21,793 [main] INFO  org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher
- Failed!
> 2011-04-20 01:24:21,803 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1066: Unable
to open iterator for alias topnames. Backend error : java.lang.NumberFormatException: null
> 
> 
> 
> ====
> thats from jobtasks web management - error  from task directly:
> 
> java.lang.RuntimeException: java.lang.NumberFormatException: null
> 	at org.apache.cassandra.hadoop.ColumnFamilyRecordReader.initialize(ColumnFamilyRecordReader.java:123)
> 	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigRecordReader.initialize(PigRecordReader.java:176)
> 	at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:418)
> 	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:620)
> 	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:305)
> 	at org.apache.hadoop.mapred.Child.main(Child.java:170)
> Caused by: java.lang.NumberFormatException: null
> 	at java.lang.Integer.parseInt(Integer.java:417)
> 	at java.lang.Integer.parseInt(Integer.java:499)
> 	at org.apache.cassandra.hadoop.ConfigHelper.getRpcPort(ConfigHelper.java:233)
> 	at org.apache.cassandra.hadoop.ColumnFamilyRecordReader.initialize(ColumnFamilyRecordReader.java:105)
> 	... 5 more
> 
> 
> 
> Any suggestions where should be problem?
> 
> Thanks,
> 


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