Doug Daniels created PIG-2689:
---------------------------------
Summary: JsonStorage fails to find schema when LimitAdjuster runs
Key: PIG-2689
URL: https://issues.apache.org/jira/browse/PIG-2689
Project: Pig
Issue Type: Bug
Affects Versions: 0.10.0
Reporter: Doug Daniels
Attachments: PIG-2689.patch
Scripts that both save out data with JsonStorage and trigger the LimitAdjuster
(e.g. doing an order by followed by a limit) yield the following Exception:
java.io.IOException: Could not find schema in UDF context
at
org.apache.pig.builtin.JsonStorage.prepareToWrite(JsonStorage.java:125)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat$PigRecordWriter.<init>(PigOutputFormat.java:125)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputFormat.getRecordWriter(PigOutputFormat.java:86)
at
org.apache.hadoop.mapred.ReduceTask$NewTrackingRecordWriter.<init>(ReduceTask.java:569)
at
org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:638)
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:417)
at
org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:260)
This happens b/c the LimitAdjuster does not copy the signature into it's newly
created POStore, and hence JsonStorage looks for the schema for a null
signature.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
