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https://issues.apache.org/jira/browse/PIG-4525?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Niels Basjes updated PIG-4525:
------------------------------
Attachment: PIG-4525-2015-04-30-1115.patch
This patch simply changes the exception message from
{code}java.lang.Exception:
org.apache.pig.backend.executionengine.ExecException: ERROR 0: Scalar has more
than one row in the output. 1st : (key,1), 2nd :(key,2){code}
to
{code}java.lang.Exception:
org.apache.pig.backend.executionengine.ExecException: ERROR 0: Scalar has more
than one row in the output. 1st : (key,1), 2nd :(key,2) (common cause: "JOIN"
then "FOREACH ... GENERATE foo.bar" should be "foo::bar" )
{code}
> Clarify "Scalar has more than one row in the output."
> -----------------------------------------------------
>
> Key: PIG-4525
> URL: https://issues.apache.org/jira/browse/PIG-4525
> Project: Pig
> Issue Type: Improvement
> Reporter: Niels Basjes
> Assignee: Niels Basjes
> Priority: Trivial
> Attachments: PIG-4525-2015-04-30-1115.patch
>
>
> The exception "Scalar has more than one row in the output." is correct yet is
> reason for many (starting) pig developers to search the internet for a
> solution.
> I propose (and I'll include a patch) to simply extend the exception message
> with a hint towards the right solution.
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