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Type:
Sub-task
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Status: Resolved
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Priority:
Critical
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Resolution: Fixed
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Affects Version/s: None
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Component/s: Performance
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Labels:None
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Hadoop Flags:Reviewed
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Release Note:
Made some performance test for 100% put case in branch-2 before.
We can see that there are many latency peak in p999 latency curve , and the peak time are almost the point time which our region is flushing.
See the hbase20-ssd-put-10000000000-rows-latencys-and-qps
And, I used the add-some-log.patch to log some time consuming when we grab the update.writeLock() to make a memstore snapshot. Tested again, I found those logs in log.txt.
Seems most of the time was consumed when taking memstore snapshot.. Let me dig into this.
- relates to
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HBASE-21748 Port HBASE-21738 (Remove all the CLSM#size operation in our memstore because it's an quite time consuming.) to branch-1
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- Resolved
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- links to