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https://issues.apache.org/jira/browse/HBASE-18966?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chia-Ping Tsai updated HBASE-18966:
-----------------------------------
    Description: 
The in-memory compaction/merge do the great job of optimizing the memory layout 
for cells, but they don't update its {{TimeRange}}. It don't cause any bugs 
currently because the {{TimeRange}} is used for store-level ts filter only and 
the default {{TimeRange}} of {{ImmutableSegment}} created by in-memory 
compaction/merge has the maximum ts range.  

The {{TimeRange}} is used to be a snapshot of {{TimeRangeTracker}} before for 
avoiding the sync operation happening in {{TimeRangeTracker}}. HBASE-

  was:The in-memory compaction/merge do the great job of optimizing the memory 
layout for cells, but they don't update its {{TimeRange}}. It don't cause any 
bugs currently because the {{TimeRange}} is used for store-level ts filter only 
and the default {{TimeRange}} of {{ImmutableSegment}} created by in-memory 
compaction/merge has the maximum ts range.  


> Use non-sync TimeRangeTracker as a replacement for TimeRange in 
> ImmutableSegment
> --------------------------------------------------------------------------------
>
>                 Key: HBASE-18966
>                 URL: https://issues.apache.org/jira/browse/HBASE-18966
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Chia-Ping Tsai
>            Assignee: Chia-Ping Tsai
>             Fix For: 2.0.0-beta-1
>
>         Attachments: HBASE-18966.v0.patch, HBASE-18966.v1.patch, 
> HBASE-18966.v2.patch, HBASE-18966.v2.patch
>
>
> The in-memory compaction/merge do the great job of optimizing the memory 
> layout for cells, but they don't update its {{TimeRange}}. It don't cause any 
> bugs currently because the {{TimeRange}} is used for store-level ts filter 
> only and the default {{TimeRange}} of {{ImmutableSegment}} created by 
> in-memory compaction/merge has the maximum ts range.  
> The {{TimeRange}} is used to be a snapshot of {{TimeRangeTracker}} before for 
> avoiding the sync operation happening in {{TimeRangeTracker}}. HBASE-



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