GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/9599
[SPARK-11578][SQL][follow-up][WIP] complete the user facing api for typed
aggregation
Currently the user facing api for typed aggregation has some limitations:
* the customized typed aggregation must be the first of aggregation list
* the customized typed aggregation can only use long as buffer type
* the customized typed aggregation can only use flat type as result type
This PR tries to remove these limitations.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark agg
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/9599.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #9599
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commit f247f243efc766dc6a70ed8ee323e4eb2716ec87
Author: Wenchen Fan <[email protected]>
Date: 2015-11-10T15:02:44Z
complete the typed aggregate
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