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https://issues.apache.org/jira/browse/PIG-1078?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Alan Gates updated PIG-1078:
----------------------------
Resolution: Fixed
Fix Version/s: (was: 0.6.0)
Status: Resolved (was: Patch Available)
Patch checked in.
> [zebra] merge join with empty table failed
> ------------------------------------------
>
> Key: PIG-1078
> URL: https://issues.apache.org/jira/browse/PIG-1078
> Project: Pig
> Issue Type: Bug
> Reporter: Jing Huang
> Assignee: Yan Zhou
> Fix For: 0.7.0
>
> Attachments: PIG-1078.patch
>
>
> Got indexOutOfBound exception.
> Here is the pig script:
> register /grid/0/dev/hadoopqa/jars/zebra.jar;
> --a1 = load '1.txt' as (a:int,
> b:float,c:long,d:double,e:chararray,f:bytearray,r1(f1:chararray,f2:chararray),m1:map[]);
> --a2 = load 'empty.txt' as (a:int,
> b:float,c:long,d:double,e:chararray,f:bytearray,r1(f1:chararray,f2:chararray),m1:map[]);
> --dump a1;
> --a1order = order a1 by a;
> --a2order = order a2 by a;
> --store a1order into 'a1' using
> org.apache.hadoop.zebra.pig.TableStorer('[a,b,c];[d,e,f,r1,m1]');
> --store a2order into 'empty' using
> org.apache.hadoop.zebra.pig.TableStorer('[a,b,c];[d,e,f,r1,m1]');
> rec1 = load 'a1' using org.apache.hadoop.zebra.pig.TableLoader();
> rec2 = load 'empty' using org.apache.hadoop.zebra.pig.TableLoader();
> joina = join rec1 by a, rec2 by a using "merge" ;
> dump joina;
> ======
> please note that table "a1" and "empty" are created correctly.
> Here is the stack trace:
> Backend error message
> ---------------------
> java.lang.ArrayIndexOutOfBoundsException: 0
> at
> org.apache.hadoop.zebra.mapred.TableInputFormat.getTableRecordReader(TableInputFormat.java:478)
> at
> org.apache.hadoop.zebra.pig.TableLoader.bindTo(TableLoader.java:166)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POMergeJoin.seekInRightStream(POMergeJoin.java:400)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POMergeJoin.getNext(POMergeJoin.java:181)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapBase.runPipeline(PigMapBase.java:247)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapBase.map(PigMapBase.java:238)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapOnly$Map.map(PigMapOnly.java:65)
> at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
> at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:358)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:307)
> at org.apache.hadoop.mapred.Child.main(Child.java:159)
> Pig Stack Trace
> ---------------
> ERROR 6015: During execution, encountered a Hadoop error.
> org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable to
> open iterator for alias joina
> at org.apache.pig.PigServer.openIterator(PigServer.java:481)
> at
> org.apache.pig.tools.grunt.GruntParser.processDump(GruntParser.java:539)
> at
> org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:241)
> at
> org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:168)
> at
> org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:144)
> at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:89)
> at org.apache.pig.Main.main(Main.java:386)
> Caused by: org.apache.pig.backend.executionengine.ExecException: ERROR 6015:
> During execution, encountered a Hadoop error.
> at
> .apache.hadoop.zebra.mapred.TableInputFormat.getTableRecordReader(TableInputFormat.java:478)
> at .apache.hadoop.zebra.pig.TableLoader.bindTo(TableLoader.java:166)
> at
> .apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POMergeJoin.seekInRightStream(POMergeJoin.java:400)
> at
> .apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POMergeJoin.getNext(POMergeJoin.java:181)
> at
> .apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapBase.runPipeline(PigMapBase.java:247)
> at
> .apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapBase.map(PigMapBase.java:238)
> at
> .apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapOnly$Map.map(PigMapOnly.java:65)
> at .apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
> at .apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:358)
> at .apache.hadoop.mapred.MapTask.run(MapTask.java:307)
> Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
> ... 10 more
> ================================================================================
>
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