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Posted to commits@cassandra.apache.org by "Alex Liu (JIRA)" <ji...@apache.org> on 2013/08/27 18:59:53 UTC
[jira] [Commented] (CASSANDRA-5941) Incorrect Schema with PIG
CqlStorage Queries
[ https://issues.apache.org/jira/browse/CASSANDRA-5941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13751441#comment-13751441 ]
Alex Liu commented on CASSANDRA-5941:
-------------------------------------
[~schappetj]Can you try patch 5867-bug-fix-filter-push-down-1.2-branch.txt on CASSANDRA-5876?
> Incorrect Schema with PIG CqlStorage Queries
> --------------------------------------------
>
> Key: CASSANDRA-5941
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5941
> Project: Cassandra
> Issue Type: Bug
> Reporter: James Schappet
> Assignee: Alex Liu
>
> A = LOAD 'cql://my/data?where_clause=key%3D\'status\' ' USING CqlStorage() AS
> (
> type:chararray,
> barcode:chararray,
> row_id:bytearray,
> key:chararray,
> status:chararray
> );
> DESCRIBE A;
> --A: {type: chararray,barcode: chararray,row_id: bytearray,key: chararray,status: chararray}
> B = FOREACH A GENERATE FLATTEN( status );
> I am trying to process the following data:
> B = FOREACH A GENERATE FLATTEN( status);
> DUMB B;
> (value,LIVING)
> (value,LIVING)
> (value,LIVING)
> (value,DECEASED)
> (value,LIVING)
> (value,DECEASED)
> (value,DECEASED)
> (value,LIVING)
> But when I try to filter it (FILTER A BY status MATCHES 'DECEASED')
> I get the following error:
> 2013-08-23 08:47:16,290 [Thread-4] WARN org.apache.hadoop.mapred.LocalJobRunner - job_local_0001
> java.lang.ClassCastException: org.apache.pig.data.BinSedesTuple cannot be cast to java.lang.String
> at org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.PORegexp.getNext(PORegexp.java:84)
> at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POFilter.getNext(POFilter.java:148)
> at org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.processInput(PhysicalOperator.java:290)
> at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNext(POForEach.java:233)
> at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce$Reduce.runPipeline(PigGenericMapReduce.java:460)
> ...
> There are two StackOverFlow questions related to this:
> http://stackoverflow.com/questions/18407248/cce-binsedestuple-cannot-be-cast-to-string?lq=1
> http://stackoverflow.com/questions/18391552/cqlstorage-generates-wrong-pig-schema?lq=1
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