GitHub user kunalkhamar opened a pull request:
https://github.com/apache/spark/pull/16826
Fork SparkSession with option to inherit a copy of the SessionState.
## What changes were proposed in this pull request?
Forking a newSession() from SparkSession currently makes a new SparkSession
that does not retain SessionState (i.e. temporary tables, SQL config,
registered functions etc.) This change adds a flag
newSession(inheritSessionState: Boolean) which can create a new SparkSession
with a copy of the parent's SessionState.
## How was this patch tested?
Unit tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/kunalkhamar/spark fork-sparksession
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16826.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 #16826
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commit 18ce1b82403cfb1e2b4fcac2dd5875f289d61ed3
Author: Kunal Khamar <kkha...@outlook.com>
Date: 2017-02-03T00:31:05Z
Add capability to inherit SessionState (SQL conf, temp tables, registered
functions) when forking a new SparkSession.
commit 9beb78d82d7777bc17aed047d818fdd4fca1b0d6
Author: Kunal Khamar <kkha...@outlook.com>
Date: 2017-02-06T22:55:56Z
Add tests for forking new session with inherit config enabled. Update
overloaded functions for Java bytecode compatibility.
commit a343d8af9c577158042e4af9f8832f46aeecd509
Author: Kunal Khamar <kkha...@outlook.com>
Date: 2017-02-06T23:24:02Z
Fix constructor default args for bytecode compatibility.
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