[jira] [Updated] (HBASE-14099) StoreFile.passesKeyRangeFilter need not create Cells from the Scan's start and stop Row

["Appy (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-14099?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Appy updated HBASE-14099:
-------------------------
    Attachment: hfiles_and_testclass.zip

> StoreFile.passesKeyRangeFilter need not create Cells from the Scan's start and stop Row
> ---------------------------------------------------------------------------------------
>
>                 Key: HBASE-14099
>                 URL: https://issues.apache.org/jira/browse/HBASE-14099
>             Project: HBase
>          Issue Type: Improvement
>          Components: Performance, Scanners
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 2.0.0
>
>         Attachments: HBASE-14099.patch, HBASE-14099_1.patch, HBASE-14099_2.patch, HBASE-14099_3.patch, HBASE-14099_4.patch, hfiles_and_testclass.zip, storefile.png
>
>
> During profiling saw that the code here in passesKeyRangeFilter in Storefile
> {code}
>   KeyValue smallestScanKeyValue = scan.isReversed() ? KeyValueUtil
>           .createFirstOnRow(scan.getStopRow()) : KeyValueUtil.createFirstOnRow(scan
>           .getStartRow());
>       KeyValue largestScanKeyValue = scan.isReversed() ? KeyValueUtil
>           .createLastOnRow(scan.getStartRow()) : KeyValueUtil.createLastOnRow(scan
>           .getStopRow());
> {code}
> This row need not be copied now considering that we have CellComparator.compareRows(Cell, byte[]). 
> We have already refactored the firstKeyKv and lastKeyKV as part of other JIRAs.



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