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https://issues.apache.org/jira/browse/HBASE-14921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15382750#comment-15382750
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Anastasia Braginsky commented on HBASE-14921:
---------------------------------------------
No, in the next patch I plan to leave it as is, unless you explain me why it is
wrong. In CELL_ARRAY_MAP_ENTRY I count the reference for the array entry
itself, then I count object, reference and two integers for:
{code}
// KeyValue core instance fields.
protected byte [] bytes = null; // an immutable byte array that contains the
KV
protected int offset = 0; // offset into bytes buffer KV starts at
protected int length = 0; // length of the KV starting from offset.
{code}
The cell's actual data is counted not here, but via heapSize() method.
> Memory optimizations
> --------------------
>
> Key: HBASE-14921
> URL: https://issues.apache.org/jira/browse/HBASE-14921
> Project: HBase
> Issue Type: Sub-task
> Affects Versions: 2.0.0
> Reporter: Eshcar Hillel
> Assignee: Anastasia Braginsky
> Attachments: CellBlocksSegmentInMemStore.pdf,
> CellBlocksSegmentinthecontextofMemStore(1).pdf, HBASE-14921-V01.patch,
> HBASE-14921-V02.patch, HBASE-14921-V03.patch, HBASE-14921-V04-CA-V02.patch,
> HBASE-14921-V04-CA.patch, HBASE-14921-V05-CAO.patch,
> InitialCellArrayMapEvaluation.pdf, IntroductiontoNewFlatandCompactMemStore.pdf
>
>
> Memory optimizations including compressed format representation and offheap
> allocations
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