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https://issues.apache.org/jira/browse/HBASE-17896?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15962642#comment-15962642
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Yu Li commented on HBASE-17896:
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bq. The fix is to avoid the test failure when running test without unsafe
I see, so the patch is not only about fixing Segment heap size accounting, but
also fixes TestHeapSize#testObjectSize when w/o unsafe. Good catch.
> The FIXED_OVERHEAD of Segment is incorrect
> ------------------------------------------
>
> Key: HBASE-17896
> URL: https://issues.apache.org/jira/browse/HBASE-17896
> Project: HBase
> Issue Type: Sub-task
> Affects Versions: 2.0.0
> Reporter: Chia-Ping Tsai
> Assignee: Chia-Ping Tsai
> Priority: Minor
> Fix For: 2.0.0
>
> Attachments: HBASE-17896.v0.patch
>
>
> {noformat}
> 5 * ClassSize.REFERENCE // cellSet, comparator, memStoreLAB, size,
> timeRangeTracker
> {noformat}
> In fact, the Segment has 6 references.
> # cellSet
> # comparator
> # memStoreLAB
> # dataSize
> # heapSize
> # timeRangeTracker
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