Praveen Rachabattuni created PIG-4191:
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Summary: Make skewed join work with Spark
Key: PIG-4191
URL: https://issues.apache.org/jira/browse/PIG-4191
Project: Pig
Issue Type: New Feature
Components: spark
Reporter: Praveen Rachabattuni
Related e2e tests: Union_9, Union_10
Sample script:
a = load '/user/pig/tests/data/singlefile/studenttab10k' as (name, age, gpa);
b = load '/user/pig/tests/data/singlefile/studentcolon10k' using
PigStorage(':') as (name, age, gpa);
c = union a, b;
d = load '/user/pig/tests/data/singlefile/votertab10k' as (name, age,
registration, contributions);
e = join c by name, d by name using 'skewed' PARALLEL 5;
store e into '/user/pig/out/praveenr-1411380943-nightly.conf/Union_9.out';
Pig Stack Trace
---------------
ERROR 0: java.lang.IllegalArgumentException: Spork unsupported
PhysicalOperator: (Name: e: SkewedJoin[tuple] - scope-6 Operator Key: scope-6)
org.apache.pig.backend.executionengine.ExecException: ERROR 0:
java.lang.IllegalArgumentException: Spork unsupported PhysicalOperator: (Name:
e: SkewedJoin[tuple] - scope-6 Operator Key: scope-6)
at
org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.launchPig(HExecutionEngine.java:285)
at org.apache.pig.PigServer.launchPlan(PigServer.java:1378)
at
org.apache.pig.PigServer.executeCompiledLogicalPlan(PigServer.java:1363)
at org.apache.pig.PigServer.execute(PigServer.java:1352)
at org.apache.pig.PigServer.executeBatch(PigServer.java:403)
at org.apache.pig.PigServer.executeBatch(PigServer.java:386)
at
org.apache.pig.tools.grunt.GruntParser.executeBatch(GruntParser.java:170)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:233)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:204)
at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:81)
at org.apache.pig.Main.run(Main.java:611)
at org.apache.pig.Main.main(Main.java:164)
Caused by: java.lang.IllegalArgumentException: Spork unsupported
PhysicalOperator: (Name: e: SkewedJoin[tuple] - scope-6 Operator Key: scope-6)
at
org.apache.pig.backend.hadoop.executionengine.spark.SparkLauncher.physicalToRDD(SparkLauncher.java:239)
at
org.apache.pig.backend.hadoop.executionengine.spark.SparkLauncher.physicalToRDD(SparkLauncher.java:232)
at
org.apache.pig.backend.hadoop.executionengine.spark.SparkLauncher.launchPig(SparkLauncher.java:140)
at
org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.launchPig(HExecutionEngine.java:279)
... 11 more
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