GitHub user ScrapCodes opened a pull request:
https://github.com/apache/spark/pull/13661
[SPARK-15942][REPL] Unblock `:reset` command in REPL.
## What changes were proposed in this pull
(Paste from JIRA issue.)
As a follow up for SPARK-15697, I have following semantics for `:reset`
command.
On `:reset` we forget all that user has done but not the initialization of
spark. To avoid confusion or make it more clear, we show the message `spark`
and `sc` are not erased, infact they are in same state as they were left by
previous operations done by the user.
While doing above, somewhere I felt that this is not usually what reset
means. But an accidental shutdown of a cluster can be very costly, so may be in
that sense this is less surprising and still useful.
## How was this patch tested?
Manually, by calling `:reset` command, by both altering the state of
SparkContext and creating some local variables.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ScrapCodes/spark repl-reset-command
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/13661.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 #13661
----
commit 7f2e3b5ef6b0185591295ad24d08c7c86b6bd726
Author: Prashant Sharma <[email protected]>
Date: 2016-06-14T11:04:01Z
[SPARK-15942][REPL] Unblock `:reset` command in REPL.
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