GitHub user beriaanirudh opened a pull request:
https://github.com/apache/zeppelin/pull/1283
Buffer append output results + fix extra incorrect results
### What is this PR for?
On a paragraph run, for every line of output, there is a broadcast of the
new line from zeppelin. In case of thousands of lines of output, the browser/s
would hang because of the volume of these append-output events. Also, a bug has
been observed where in such large output cases, the result will repeated
(coming from append-output calls + finish-event calls).
### What type of PR is it?
Improvement + Bug Fix
### Todos
### What is the Jira issue?
https://issues.apache.org/jira/browse/ZEPPELIN-1292
### How should this be tested?
The test could be to run a simple paragraph with large result. Eg:
```
%sh
for i in {1..10000}
do
echo $i
done
```
PS: One will need to clear browser cache between running with and without
this code patch since there are javascript changes as well.
### Screenshots (if appropriate)
### Questions:
* Does the licenses files need update?
No
* Is there breaking changes for older versions?
No
* Does this needs documentation?
It could need for the design. Otherwise I have added code comments
explaining behaviour.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/beriaanirudh/zeppelin ZEPPELIN-1292
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/zeppelin/pull/1283.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 #1283
----
commit 7020f0cd053a39a60bb8f58ca5f701baadfae78d
Author: Beria <[email protected]>
Date: 2016-08-04T12:15:36Z
Buffer append output results + fix extra incorrect results
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