[ ZEPPELIN-1559 ] Code Editor slow performance resolve of the many Notebooks

[cloverhearts]

What is this PR for?

Currently, if you have a Notebook large number of,
There is a sharp decrease in performance of the Code editor.
The number and Paragraph creation of the Notebook does not have a relationship.
We are should always use the Code editor of the same performance.

I had to print a Notebook list only if there is a request.
There was quite a lot of performance improvements.

What type of PR is it?

Improvement

Todos

• - change Notebook list render logic

What is the Jira issue?

https://issues.apache.org/jira/browse/ZEPPELIN-1559
https://issues.apache.org/jira/browse/ZEPPELIN-1513

How should this be tested?

1. Create a notebook over 1000. (tested 10,000)
   I've used script on this. (important! please, backup for notebooks directory.)

#/bin/bash
idx="0"
while [ $idx -lt 1000 ] # notebooks count 1000
do
mkdir $idx
echo """
{
\"paragraphs\": [
{
\"text\": \"fsdkljfowiejfowejfoiwefiowejfiojlkdsjfklsdjflkjsdflkjwlkjefewf\",
\"dateUpdated\": \"Oct 13, 2016 5:02:44 PM\",
\"config\": {
\"colWidth\": 12.0,
\"graph\": {
\"mode\": \"table\",
\"height\": 300.0,
\"optionOpen\": false,
\"keys\": [],
\"values\": [],
\"groups\": [],
\"scatter\": {},
\"map\": {
\"baseMapType\": \"Streets\",
\"isOnline\": true,
\"pinCols\": []
}
},
\"enabled\": true,
\"editorMode\": \"ace/mode/scala\"
},
\"settings\": {
\"params\": {},
\"forms\": {}
},
\"apps\": [],
\"jobName\": \"paragraph_1476345687682_-1459653828\",
\"id\": \"20161013-170127_68316618\",
\"dateCreated\": \"Oct 13, 2016 5:01:27 PM\",
\"status\": \"READY\",
\"progressUpdateIntervalMs\": 500
}
],
\"name\": \""${idx}"\",
\"id\": \""${idx}"\",
\"angularObjects\": {
\"2BZSC9D3G:shared_process\": [],
\"2BXGWF5TF:shared_process\": [],
\"2BYKTADMA:shared_process\": [],
\"2BYFT9HTZ:shared_process\": [],
\"2BXDTJMED:shared_process\": [],
\"2BZHPZ6NS:shared_process\": [],
\"2BYKRWYB3:shared_process\": [],
\"2BZH2UAT4:shared_process\": [],
\"2BZ38J35G:shared_process\": [],
\"2BXJ2X464:shared_process\": [],
\"2BYQ57ED9:shared_process\": [],
\"2BXDSA2SN:shared_process\": [],
\"2BWZCTD2B:shared_process\": [],
\"2BWT81MNU:shared_process\": [],
\"2BWA7ZTRD:shared_process\": [],
\"2BXW6X5KN:shared_process\": [],
\"2BVWDQPXH:shared_process\": [],
\"2BZGAF8KG:shared_process\": []
},
\"config\": {},
\"info\": {}
}
""" > $idx/note.json
idx=$[$idx+1]
done

1. zeppelin restart or refresh notebook.
2. Try coding in any notebook. (fast)

Screenshots (if appropriate)

before ( 5000 notebooks)

after ( 5000 notebooks)

Questions:

• Does the licenses files need update? no
• Is there breaking changes for older versions? no
• Does this needs documentation? no

[cloverhearts]

added jira issue https://issues.apache.org/jira/browse/ZEPPELIN-1513

[Leemoonsoo]

Tested and confirmed angular watcher reduced from 5xxx -> 3xx in case of 1k notes. Great work!

[corneadoug]

It doesn't look like that 'id' is being used

[cloverhearts]

@corneadoug
thank you!
Modification was completed. :)

[Leemoonsoo]

LGTM and merge if there're no more discussions.