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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-15457) [performance] Save-a-seek; hint HFileReader when Scan is a "Get" Scan
Date Mon, 06 Mar 2017 23:18:33 GMT

     [ https://issues.apache.org/jira/browse/HBASE-15457?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

stack updated HBASE-15457:
    Component/s: Performance
     Issue Type: Improvement  (was: Bug)

> [performance] Save-a-seek; hint HFileReader when Scan is a "Get" Scan
> ---------------------------------------------------------------------
>                 Key: HBASE-15457
>                 URL: https://issues.apache.org/jira/browse/HBASE-15457
>             Project: HBase
>          Issue Type: Improvement
>          Components: HFile, Performance
>            Reporter: stack
> Have the Scan hint the lower-level Reader when its a 'Get' Scan. Reader is currently
doing checks for EOF and when time to load next block on each next invocation. Seems easy
enough to return null/end-of-scan if a get-scan and the next block is a different row.
> Prompted by @daniel pol questions/suggestions over on HBASE-15392; see towards the end.

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