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https://issues.apache.org/jira/browse/KUDU-1312?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dan Burkert reassigned KUDU-1312:
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Assignee: Dan Burkert
> expose API for partition-aware scan descriptors
> -----------------------------------------------
>
> Key: KUDU-1312
> URL: https://issues.apache.org/jira/browse/KUDU-1312
> Project: Kudu
> Issue Type: Sub-task
> Components: client
> Reporter: Dan Burkert
> Assignee: Dan Burkert
>
> Most integrations working with Kudu will eventually need to access partition
> information when scanning so that data locality can be preserved.
> We should provide an API which takes scan parameters (start/stop primary key
> and predicates) and returns a set of scan descriptors, each of which is
> associated with a data location. Partition pruning should be built in to
> this API so that each integration does not have to reinvent that particular
> wheel.
> The API should also allow a descriptor to be split into further pieces, so
> that higher-level integrations can increase parallelism without client-side
> filtering.
> Finally, the descriptors should be serializable so that they can be passed
> between the C++ and Java clients (mostly to allow Impala to construct the
> query plan in Java and execute it in C++).
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