[PIG-313] Error handling aggregate of a computation

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.2.0
• Fix Version/s: 0.9.0
• Hadoop Flags: Reviewed
• Assignee: Alan Gates
• Reporter: Pradeep Kamath
• Created: 15/Jul/08 00:20
• Updated: 04/Aug/11 00:34
• Resolved: 24/Jan/11 18:45

Description

Query which fails:

a = load ':INPATH:/singlefile/studenttab10k' as (name:chararray, age:int, gpa:double);
b = group a by name;
c = foreach b generate group, SUM(a.age*a.gpa);                            
store c into ':OUTPATH:';\,

Error output:

2008-07-14 16:34:08,684 [main] INFO org.apache.pig.backend.hadoop.executionengine.HExecutionEngine - Connecting to hadoop file system at: testhost.com:8020
2008-07-14 16:34:08,741 [main] WARN org.apache.hadoop.fs.FileSystem - "testhost.com:8020" is a deprecated filesystem name. Use "hdfs://testhost:8020/" instead.
2008-07-14 16:34:08,995 [main] INFO org.apache.pig.backend.hadoop.executionengine.HExecutionEngine - Connecting to map-reduce job tracker at: testhost.com:50020
2008-07-14 16:34:09,251 [main] WARN org.apache.hadoop.fs.FileSystem - "testhost.com:8020" is a deprecated filesystem name. Use "hdfs://testhost:8020/" instead.
2008-07-14 16:34:09,559 [main] ERROR org.apache.pig.PigServer - Cannot evaluate output type of Mul/Div Operator
2008-07-14 16:34:09,559 [main] ERROR org.apache.pig.PigServer - Problem resolving LOForEach schema
2008-07-14 16:34:09,559 [main] ERROR org.apache.pig.PigServer - Severe problem found during validation org.apache.pig.impl.plan.PlanValidationException: An unexpected exception caused the validation to stop
2008-07-14 16:34:09,560 [main] ERROR org.apache.pig.tools.grunt.Grunt - java.io.IOException: Unable to store for alias: c
2008-07-14 16:34:09,560 [main] ERROR org.apache.pig.Main - java.io.IOException: Unable to store for alias: c