Details
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Bug
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Status: Patch Available
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Major
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Resolution: Unresolved
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None
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None
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Description
Here is a lhofhansl special.
When we construct the region scanner, we get our read point and then store it with the scanner instance in a Region scoped CSLM. This is done under a synchronize on the CSLM.
This synchronize on a region-scoped Map creating region scanners is the outstanding point of lock contention according to flight recorder (My work load is workload c, random reads).
Attachments
Attachments
Issue Links
- relates to
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HBASE-16161 Remove a few unnecessary (uncontended) synchronizes
- Patch Available
- links to