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https://issues.apache.org/jira/browse/PIG-4193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14346127#comment-14346127
]
liyunzhang_intel commented on PIG-4193:
---------------------------------------
Hi [~praveenr019]:
If the only problem for PIG-4193-1.patch is changing code in
POCollectedGroup.java, following way can solve the problem:
1. Revert changes in POCollectedGroup.java
2. Create POCollectedGroupSpark.java in
org.apache.pig.backend.hadoop.executionengine.spark.operator
code maybe like following:
{code}
public class POCollectedGroupSpark extends POCollectedGroup{
public POCollectedGroupSpark(POCollectedGroup copy){
super(copy.getOperatorKey());
}
...
public Result getNextTuple(boolean proceed) throws ExecException {
...
}
{code}
3. Change SparkCompiler#visitCollectedGroup
{code}
public void visitCollectedGroup(POCollectedGroup op) throws VisitorException {
POCollectedGroupSpark newOp = new
POCollectedGroupSpark(op.getKeyType())
...
}
{code}
4. Change CollectedGroupConverter.java
from
{code}
public class CollectedGroupConverter implements POConverter<Tuple, Tuple,
POCollectedGroup>
{code}
to
{code}
public class CollectedGroupConverter implements POConverter<Tuple, Tuple,
POCollectedGroupSpark>
{code}
> Make collected group work with Spark
> ------------------------------------
>
> Key: PIG-4193
> URL: https://issues.apache.org/jira/browse/PIG-4193
> Project: Pig
> Issue Type: Sub-task
> Components: spark
> Reporter: Praveen Rachabattuni
> Assignee: Praveen Rachabattuni
> Fix For: spark-branch
>
> Attachments: PIG-4193-1.patch
>
>
> Related e2e tests: CollectedGroup_1 - CollectedGroup_6
> Sample script:
> a = load '/user/pig/tests/data/singlefile/studenttab10k';
> b = order a by $0;
> store b into
> '/user/pig/out/praveenr-1411383735-nightly.conf/CollectedGroup_1.out.intermediate';
> exec;
> register ./lib/java/testudf.jar;
> c = load
> '/user/pig/out/praveenr-1411383735-nightly.conf/CollectedGroup_1.out.intermediate'
> using org.apache.pig.test.udf.storefunc.SimpleCollectableLoader();
> d = group c by $0 using 'collected';
> e = foreach d generate group, COUNT(c);
> store e into
> '/user/pig/out/praveenr-1411383735-nightly.conf/CollectedGroup_1.out';
> Pig Stack Trace
> ---------------
> ERROR 0: java.lang.IllegalArgumentException: Spork unsupported
> PhysicalOperator: (Name: d: Map side group [tuple]{bytearray} - scope-28
> Operator Key: scope-28)
> org.apache.pig.backend.executionengine.ExecException: ERROR 0:
> java.lang.IllegalArgumentException: Spork unsupported PhysicalOperator:
> (Name: d: Map side group [tuple]{bytearray} - scope-28 Operator Key: scope-28)
> 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: d: Map side group [tuple]{bytearray} - scope-28
> Operator Key: scope-28)
> 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.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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