Inifinite loop in JobClient when reading from BinStorage Message:
[org.apache.hadoop.mapreduce.lib.input.FileInputFormat - Total input paths to
process : 2]
------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: PIG-1308
URL: https://issues.apache.org/jira/browse/PIG-1308
Project: Pig
Issue Type: Bug
Reporter: Viraj Bhat
Fix For: 0.7.0
Simple script fails to read files from BinStorage() and fails to submit jobs to
JobTracker. This occurs with trunk and not with Pig 0.6 branch.
{code}
data = load 'binstorage' using BinStorage() as (s, m, l);
A = foreach ULT generate s#'key' as value;
X = limit A 20;
dump X;
{code}
When this script is submitted to the Jobtracker, we found the following error:
2010-03-18 22:31:22,296 [main] INFO
org.apache.hadoop.mapreduce.lib.input.FileInputFormat - Total input paths to
process : 2
2010-03-18 22:32:01,574 [main] INFO
org.apache.hadoop.mapreduce.lib.input.FileInputFormat - Total input paths to
process : 2
2010-03-18 22:32:43,276 [main] INFO
org.apache.hadoop.mapreduce.lib.input.FileInputFormat - Total input paths to
process : 2
2010-03-18 22:33:21,743 [main] INFO
org.apache.hadoop.mapreduce.lib.input.FileInputFormat - Total input paths to
process : 2
2010-03-18 22:34:02,004 [main] INFO
org.apache.hadoop.mapreduce.lib.input.FileInputFormat - Total input paths to
process : 2
2010-03-18 22:34:43,442 [main] INFO
org.apache.hadoop.mapreduce.lib.input.FileInputFormat - Total input paths to
process : 2
2010-03-18 22:35:25,907 [main] INFO
org.apache.hadoop.mapreduce.lib.input.FileInputFormat - Total input paths to
process : 2
2010-03-18 22:36:07,402 [main] INFO
org.apache.hadoop.mapreduce.lib.input.FileInputFormat - Total input paths to
process : 2
2010-03-18 22:36:48,596 [main] INFO
org.apache.hadoop.mapreduce.lib.input.FileInputFormat - Total input paths to
process : 2
2010-03-18 22:37:28,014 [main] INFO
org.apache.hadoop.mapreduce.lib.input.FileInputFormat - Total input paths to
process : 2
2010-03-18 22:38:04,823 [main] INFO
org.apache.hadoop.mapreduce.lib.input.FileInputFormat - Total input paths to
process : 2
2010-03-18 22:38:38,981 [main] INFO
org.apache.hadoop.mapreduce.lib.input.FileInputFormat - Total input paths to
process : 2
2010-03-18 22:39:12,220 [main] INFO
org.apache.hadoop.mapreduce.lib.input.FileInputFormat - Total input paths to
process : 2
Stack Trace revelead
at org.apache.pig.impl.io.ReadToEndLoader.init(ReadToEndLoader.java:144)
at
org.apache.pig.impl.io.ReadToEndLoader.<init>(ReadToEndLoader.java:115)
at org.apache.pig.builtin.BinStorage.getSchema(BinStorage.java:404)
at
org.apache.pig.impl.logicalLayer.LOLoad.determineSchema(LOLoad.java:167)
at
org.apache.pig.impl.logicalLayer.LOLoad.getProjectionMap(LOLoad.java:263)
at
org.apache.pig.impl.logicalLayer.ProjectionMapCalculator.visit(ProjectionMapCalculator.java:112)
at org.apache.pig.impl.logicalLayer.LOLoad.visit(LOLoad.java:210)
at org.apache.pig.impl.logicalLayer.LOLoad.visit(LOLoad.java:52)
at
org.apache.pig.impl.plan.DependencyOrderWalker.walk(DependencyOrderWalker.java:69)
at org.apache.pig.impl.plan.PlanVisitor.visit(PlanVisitor.java:51)
at
org.apache.pig.impl.logicalLayer.optimizer.LogicalTransformer.rebuildProjectionMaps(LogicalTransformer.java:76)
at
org.apache.pig.impl.logicalLayer.optimizer.LogicalOptimizer.optimize(LogicalOptimizer.java:216)
at org.apache.pig.PigServer.compileLp(PigServer.java:883)
at org.apache.pig.PigServer.store(PigServer.java:564)
The binstorage data was generated from 2 datasets using limit and union:
{code}
Large1 = load 'input1' using PigStorage();
Large2 = load 'input2' using PigStorage();
V = limit Large1 10000;
C = limit Large2 10000;
U = union V, C;
store U into 'mobilesample' using BinStorage();
{code}
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