GitHub user tdas opened a pull request:
https://github.com/apache/spark/pull/12246
[SPARK-14473][SQL]
## What changes were proposed in this pull request?
There are many operations that are currently not supported in the streaming
execution. For example:
- joining two streams
- unioning a stream and a batch source
- sorting
- window functions (not time windows)
- distinct aggregates
Furthermore, executing a query with a stream source as a batch query should
also fail.
This patch add an additional step after analysis in the QueryExecution
which will check that all the operations in the analyzed logical plan is
supported or not.
## How was this patch tested?
unit tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/tdas/spark SPARK-14473
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/12246.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 #12246
----
commit 87b97828d43a648d10b84fe098cecc1a26cd1817
Author: Tathagata Das <[email protected]>
Date: 2016-04-07T23:18:32Z
First few rules for unsupported operations
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