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https://issues.apache.org/jira/browse/PIG-1191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12800636#action_12800636
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Ankur commented on PIG-1191:
----------------------------
Case 1, 2: Succeeds
Case 3 : Fails
Case 4,5: Empty results. Both of them are using consecutive projection of
complex fields.
I'll add 1 more test case
> POCast throws exception for certain sequences of LOAD, FILTER, FORACH
> ---------------------------------------------------------------------
>
> Key: PIG-1191
> URL: https://issues.apache.org/jira/browse/PIG-1191
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.6.0
> Reporter: Ankur
> Priority: Blocker
> Attachments: PIG-1191-1.patch
>
>
> When using a custom load/store function, one that returns complex data (map
> of maps, list of maps), for certain sequences of LOAD, FILTER, FOREACH pig
> script throws an exception of the form -
>
> org.apache.pig.backend.executionengine.ExecException: ERROR 1075: Received a
> bytearray from the UDF. Cannot determine how to convert the bytearray to
> <actual-type>
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POCast.getNext(POCast.java:639)
> ...
> Looking through the code of POCast, apparently the operator was unable to
> find the right load function for doing the conversion and consequently bailed
> out with the exception failing the entire pig script.
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