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https://issues.apache.org/jira/browse/PIG-3037?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ted Malaska updated PIG-3037:
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Description:
Why doesn't PIG support partition by on order by?
If PIG would then PIG could be used for a mess of windowing functions.
Is there some reason why we can't add a custom partitioner on a order by
operation?
Is there a work around to do windowing in PIG.
I understand the I can group and then order with in a group, but what if the
items with in the group are super big will I have memory issues? Because I
need to order the values with in a group. i.e. stock tickers is the group and
they need to be sorted on time.
was:
Why doesn't PIG support partition by on order by?
If PIG would then PIG could be used for a mess of windowing functions.
Is there some reason why we can't add a custom partitioner on a order by
operation?
Is there a work around to do windowing in PIG.
I understand the I can group and then group with in a group, but what if the
items with in the group are super big will I have memory issues? Because I
need to order the values with in a group. i.e. stock tickers is the group and
they need to be sorted on time.
> Order by partition by
> ---------------------
>
> Key: PIG-3037
> URL: https://issues.apache.org/jira/browse/PIG-3037
> Project: Pig
> Issue Type: Bug
> Reporter: Ted Malaska
> Priority: Minor
>
> Why doesn't PIG support partition by on order by?
> If PIG would then PIG could be used for a mess of windowing functions.
> Is there some reason why we can't add a custom partitioner on a order by
> operation?
> Is there a work around to do windowing in PIG.
> I understand the I can group and then order with in a group, but what if the
> items with in the group are super big will I have memory issues? Because I
> need to order the values with in a group. i.e. stock tickers is the group
> and they need to be sorted on time.
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