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https://issues.apache.org/jira/browse/PIG-242?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Olga Natkovich updated PIG-242:
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Fix Version/s: (was: 0.10)
> Incremental operation
> ---------------------
>
> Key: PIG-242
> URL: https://issues.apache.org/jira/browse/PIG-242
> Project: Pig
> Issue Type: New Feature
> Components: impl
> Reporter: John DeTreville
>
> Some Pig programs repeatedly perform operations on different versions of
> tables, where these versions differ only slightly. For example, a program may
> compute f(T) at one point and f(T + delta T) at a later point. In many such
> cases, having already computed f(T) can allow us to speed up the computation
> of f(T + delta T). For example, if f is a map operation, then f(T + delta T)
> is f(T) + f(delta T), which can be computed relatively rapidly if delta T is
> small and f(T) is already known.
> It is already possible but often tedious for Pig programers to perform
> incremental operations. It would possibly help if Pig provided syntax for
> incremental operation.
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