Seems to be happening inside the method introduced in 0.11 "org.apache.pig.newplan.logical.relational.LogicalPlan.getSignature"
https://issues.apache.org/jira/browse/PIG-2587 Maybe a coincidence but can we ask Bill to help us? Shubham, can you try your query on pig 0.10.* and see if you don't hit the OOM? Koji On Sep 4, 2013, at 1:27 PM, Shubham Chopra wrote: > Hi, > > I have a relatively large pig scripts (around 1.5k lines, 85 assignments). > Around 150 columns are getting projected, joined, grouped and aggregated > ending in multiple stores. > > Pig 0.11.1 fails with the following error even before any jobs are fired: > Pig Stack Trace > --------------- > ERROR 2998: Unhandled internal error. Java heap space > > java.lang.OutOfMemoryError: Java heap space > at java.util.Arrays.copyOf(Arrays.java:2882) > at > java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:100) > at > java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:390) > at java.lang.StringBuilder.append(StringBuilder.java:119) > at > org.apache.pig.newplan.logical.optimizer.LogicalPlanPrinter.depthFirstLP(LogicalPlanPrinter.java:83) > at > org.apache.pig.newplan.logical.optimizer.LogicalPlanPrinter.visit(LogicalPlanPrinter.java:69) > at > org.apache.pig.newplan.logical.relational.LogicalPlan.getSignature(LogicalPlan.java:122) > at org.apache.pig.PigServer.execute(PigServer.java:1237) > at org.apache.pig.PigServer.executeBatch(PigServer.java:333) > at > org.apache.pig.tools.grunt.GruntParser.executeBatch(GruntParser.java:137) > at > org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:198) > at > org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:170) > at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:84) > at org.apache.pig.Main.run(Main.java:604) > at org.apache.pig.Main.main(Main.java:157) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at org.apache.hadoop.util.RunJar.main(RunJar.java:160) > > Increasing heap size to 2Gb doesn't help either. The only thing that > appears to get the script working is to disable multi query optimization. > Has anyone else faced a similar problem with Pig running out of memory > while compiling the script? Any other way to get it to work besides > disabling multi-query optimization? > > Thanks, > Shubham.
