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https://issues.apache.org/jira/browse/PIG-2660?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bill Graham updated PIG-2660:
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Attachment: PIG-2660.2.patch
Cool call. I haven't heard of anyone else using PPNLs on the list yet, but I
agree with the suggestion. Patch #2 attached.
I wondered if we should we take it a step further and catch Exception for all
calls to a PPNL. Should a bug in a PPNL implementation cause a script to fail,
possibly mid-way through execution?
If we leave things as they are now, the answer would be _yes_, unless someone
implemented their PPNL defensively to make it a _no_. As such, I'm inclined to
leave things as they are and put the control in the hands of the implementer.
> PPNL should get notified of plan before it gets executed
> --------------------------------------------------------
>
> Key: PIG-2660
> URL: https://issues.apache.org/jira/browse/PIG-2660
> Project: Pig
> Issue Type: New Feature
> Reporter: Bill Graham
> Assignee: Bill Graham
> Attachments: PIG-2660.1.patch, PIG-2660.2.patch
>
>
> The {{PigProgressNotificationListner}} should get notified of the plan
> ({{MROperPlan}}) before it gets executed. This allows listeners to inspect
> the plan and have an idea what to expect in the execution flow. Proposal is
> to add the following method to the PPNL interface, which is marked as
> evolving:
> {code}
> public void initialPlanNotification(MROperPlan plan);
> {code}
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