Hi, I'm using pig version 0.11 on Hadoop 1.3.
I run into a problem that is exactly described by the ticket https://issues.apache.org/jira/browse/PIG-2689. Quoting from the ticket: *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 contextat 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. * Unfortunately I see that such ticket was created in may 2012 and the last update was in october 2012. Is there any chance to have it fixed? I have no control on the system so I can't even apply patches. Is there any known workaround for such problem? Regards, -- Carlo Di Fulco
