The information displayed by the capacity scheduler can be improved
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Key: HADOOP-4781
URL: https://issues.apache.org/jira/browse/HADOOP-4781
Project: Hadoop Core
Issue Type: Improvement
Components: contrib/capacity-sched
Reporter: Amar Kamat
As of now the information displayed by the capacity scheduler is sequential.
Following are some ways I think we can improve the display
- It would make more sense if we display it as a table where comparing the
information across queues would be easy. Something like
|| ||Queue1||Queue2||
|guaranteed cap|75%|25%|
- Along with {{Reclaim Time Limit}} there should be a hint/info about how much
time capacity-scheduler thinks it will take to reclaim i.e it would be nice to
know the time left to reclaim.
|| ||Queue1||Queue2||
|Reclaim time limit|300000|300000|
|Time left to reclaim|500|120000|
- All the timing information should have units specified. {{Reclaim time limit
: 300000}} doesnt give any information what the unit is.
|| ||Queue1||Queue2||
|Reclaim time limit|5 mins|5 mins|
|Time left to reclaim|500 msec| 2 mins|
- Common information like disclaimers can move out of the table/display to a
common place.
- Showing guaranteed and (actual) running tasks doesnt convey much info. It
should be shown together. Something like
|| ||Queue1||Queue2||
|running/guaranteed maps|1/16|15/16|
- We can also improve/enhance the way boolean information is displayed using
ticks and crosses. Something like
|| ||Queue1||Queue2||
|Priorities|(/)|(x)|
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