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https://issues.apache.org/jira/browse/HBASE-15514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15205870#comment-15205870
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Anoop Sam John commented on HBASE-15514:
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At least in server side we can avoid and having things like CellBlock or cell
array? Because there the cells are coming in order.
In a recent PE test I noticed this. The BufferedMutator having a 2 MB flush
size. But the actual data coming to RS is not even 1 MB in size !!
So in server side also we add up all these extra Java object overhead !!!
> Single (or small number) of Column Family(ies) in Mutation optimization
> -----------------------------------------------------------------------
>
> Key: HBASE-15514
> URL: https://issues.apache.org/jira/browse/HBASE-15514
> Project: HBase
> Issue Type: Improvement
> Components: Performance
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
>
> familyMap in Mutation class is TreeMap<byte[], List<Cell>>. Overhead of
> TreeMap - 48 bytes, TreeMap$Entry - 40 bytes.
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