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https://issues.apache.org/jira/browse/HBASE-19930?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16352065#comment-16352065
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ramkrishna.s.vasudevan commented on HBASE-19930:
------------------------------------------------

So the doubt here is we created a set of immutable segments and that goes for a 
merge. So while creating an immutable segment while flattening that time itself 
the big cell would have been copied to MSLAB right? So will we have a cell that 
is not yet copied to immutable segment and MSLAB till the merge happens?

> fix ImmutableMemStoreLAB#forceCopyOfBigCellInto
> -----------------------------------------------
>
>                 Key: HBASE-19930
>                 URL: https://issues.apache.org/jira/browse/HBASE-19930
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 2.0.0-beta-1
>            Reporter: Gali Sheffi
>            Assignee: Gali Sheffi
>            Priority: Major
>         Attachments: HBASE-19930-V01.patch
>
>
> This issue is about fixing ImmutableMemStoreLAB#forceCopyOfBigCellInto.
> Following a comment in HBASE-19133 regarding a bug in 
> ImmutableMemStoreLAB#forceCopyOfBigCellInto (assuming this method is never 
> called for an ImmutableMemStoreLAB, and just throwing an 
> IllegalStateException whenever called), the forceCopyOfBigCellInto method now 
> performs the copy of big cells on the first MSLABImpl in its mslabs 
> linked-list.



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