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https://issues.apache.org/jira/browse/HBASE-15650?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HBASE-15650:
--------------------------
Attachment: 15650v3.patch
Fix tests.
Add a bunch of doc on how at write time, we pass the memstore TimeRangeTracker
down to the Writer so it doesn't have to do the calculation (it only calculates
when no memstore around, at Compaction time).
> Remove TimeRangeTracker as point of contention when many threads reading a
> StoreFile
> ------------------------------------------------------------------------------------
>
> Key: HBASE-15650
> URL: https://issues.apache.org/jira/browse/HBASE-15650
> Project: HBase
> Issue Type: Bug
> Components: Performance
> Affects Versions: 2.0.0
> Reporter: stack
> Assignee: stack
> Fix For: 2.0.0
>
> Attachments: 15650.branch-1.patch, 15650.patch, 15650.patch,
> 15650v2.patch, 15650v3.patch, Point-of-contention-on-random-read.png
>
>
> HBASE-12148 is about "Remove TimeRangeTracker as point of contention when
> many threads writing a Store". It is also a point of contention when reading.
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