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Posted to dev@pig.apache.org by "Olga Natkovich (JIRA)" <ji...@apache.org> on 2010/02/16 19:31:28 UTC
[jira] Issue Comment Edited: (PIG-1238) Dump does not respect the
schema
[ https://issues.apache.org/jira/browse/PIG-1238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12834151#action_12834151 ]
Olga Natkovich edited comment on PIG-1238 at 2/16/10 6:30 PM:
--------------------------------------------------------------
Here is a script to reproduce the issue:-
A = LOAD 'two.txt' USING PigStorage();
B = FOREACH A GENERATE ['a'#'12'] as b:map[], ['b'#['c'#'12']] as mapFields;
C = FOREACH B GENERATE(CHARARRAY) mapFields#'b'#'c' AS f1, RANDOM() AS f2;
D = ORDER C BY f2 PARALLEL 10;
E = LIMIT D 20;
F = FOREACH E GENERATE f1;
describe F;
dump F;
With the above script here is a snippet of the logs that might be useful
...
...
2010-02-16 10:42:44,814 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - 90% complete
2010-02-16 10:42:55,966 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - 100% complete
2010-02-16 10:42:55,981 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - Successfully stored result in: "hdfs://foo/tmp/temp-1870551954/tmp-470213889"
2010-02-16 10:42:55,991 [main] WARN org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - Encountered Warning ACCESSING_NON_EXISTENT_FIELD 1 time(s).
2010-02-16 10:42:55,991 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - Records written : 1
2010-02-16 10:42:55,991 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - Bytes written : 14
2010-02-16 10:42:55,991 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - Success!
(12,)
Note:- If we remove "PARALLEL 10" from Order by correct results are produced and NO warning is thrown.
was (Author: ankur):
Here is a script to reproduce the issue:-
A = LOAD 'two.txt' USING PigStorage();
B = FOREACH A GENERATE ['a'#'12'] as b:map[], ['b'#['c'#'12']] as mapFields;
C = FOREACH B GENERATE(CHARARRAY) mapFields#'b'#'c' AS f1, RANDOM() AS f2;
D = ORDER C BY f2 PARALLEL 10;
E = LIMIT D 20;
F = FOREACH E GENERATE f1;
describe F;
dump F;
With the above script here is a snippet of the logs that might be useful
...
...
2010-02-16 10:42:44,814 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - 90% complete
2010-02-16 10:42:55,966 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - 100% complete
2010-02-16 10:42:55,981 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - Successfully stored result in: "hdfs://mithrilblue-nn1.blue.ygrid.yahoo.com/tmp/temp-1870551954/tmp-470213889"
2010-02-16 10:42:55,991 [main] WARN org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - Encountered Warning ACCESSING_NON_EXISTENT_FIELD 1 time(s).
2010-02-16 10:42:55,991 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - Records written : 1
2010-02-16 10:42:55,991 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - Bytes written : 14
2010-02-16 10:42:55,991 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - Success!
(12,)
Note:- If we remove "PARALLEL 10" from Order by correct results are produced and NO warning is thrown.
> Dump does not respect the schema
> --------------------------------
>
> Key: PIG-1238
> URL: https://issues.apache.org/jira/browse/PIG-1238
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.6.0
> Reporter: Ankur
>
> For complex data type and certain sequence of operations dump produces results with non-existent field in the relation.
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