Gali Sheffi commented on HBASE-19133:

[~yuzhih...@gmail.com] - the new JIRA is HBASE-19930

> Transfer big cells or upserted/appended cells into MSLAB upon flattening to 
> CellChunkMap
> ----------------------------------------------------------------------------------------
>                 Key: HBASE-19133
>                 URL: https://issues.apache.org/jira/browse/HBASE-19133
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Anastasia Braginsky
>            Assignee: Gali Sheffi
>            Priority: Major
>             Fix For: 2.0.0-beta-1
>         Attachments: HBASE-19133-V01.patch, HBASE-19133-V02.patch, 
> HBASE-19133-V03.patch, HBASE-19133.01.patch, HBASE-19133.02.patch, 
> HBASE-19133.03.patch, HBASE-19133.04.patch, HBASE-19133.05.patch, 
> HBASE-19133.06.patch, HBASE-19133.07.patch, HBASE-19133.08.patch, 
> HBASE-19133.09.patch, HBASE-19133.10.patch, HBASE-19133.11.patch
> CellChunkMap Segment index requires all cell data to be written in the MSLAB 
> Chunks. Eventhough MSLAB is enabled, cells bigger than chunk size or 
> upserted/incremented/appended cells are still allocated on the JVM stack. If 
> such cells are found in the process of flattening into CellChunkMap 
> (in-memory-flush) they need to be copied into MSLAB.

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