[GitHub] [hbase] saintstack commented on issue #754: HBASE-22978 : Online slow response log

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saintstack commented on issue #754: HBASE-22978 : Online slow response log
URL: https://github.com/apache/hbase/pull/754#issuecomment-579603450
 
 
   I think you misunderstood me here... 
   
   "With the patch we would run at RS entrance only and for any slow running query it will go to this ring buffer running at RS. Just that this patch doesn't include storing slow logs in HDFS, which is also a good idea and probably up for a subtask given the priority is storing slow logs in ring buffer first. Storing them in HDFS would be just an option as part of another Jira(sub-task)."
   
   What I was saying is that your ringbuffer only keeps dfsclient ops. I was wondering if we could put actual requests into a system like this. If they are taking a long time, we could inspect the ringbuffer to see which type of queries are taking a while. It would be coarser grained than the dfs accesses only. Was just wondering if you think we could do this in a follow-on based on work h ere.

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