[GitHub] drill issue #1160: DRILL-6224: Publish current memory usage for Drillbits in...

[kkhatua]

Github user kkhatua commented on the issue:

    https://github.com/apache/drill/pull/1160
  
    During a freshly setup Drillbit:
    
![image](https://user-images.githubusercontent.com/4335237/37847547-644fa67c-2e8e-11e8-9aa7-2b4adf499cd0.png)
    
    While running 2 large (600M rows) join query on a 4 node setup, and one 
completes:
    
![image](https://user-images.githubusercontent.com/4335237/37847633-b4dd5a76-2e8e-11e8-9c1d-87c3a0f9f3e7.png)
    
    The Heap Usage percentage is based on {{heapUsed/heapMax}}
    The Actively Used Direct percentage is based on 
{{currentDirectInUse/PeakDirectUsed}} 
    This is because the actual total direct memory used by Netty is not 
exposed. However, this does tell how much the Drillbit is using at the moment.


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