[jira] [Updated] (HBASE-13370) PE tool could give option for using Explicit Column Tracker which leads to seeks

["ramkrishna.s.vasudevan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-13370?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ramkrishna.s.vasudevan updated HBASE-13370:
-------------------------------------------
    Attachment: HBASE-13370.patch

Patch that enables adding the columns through an option --addColumns.  Changing this I could see in the profiler that we avoid the calls to StoreScanner.seekAsDirection().

> PE tool could give option for using Explicit Column Tracker which leads to seeks
> --------------------------------------------------------------------------------
>
>                 Key: HBASE-13370
>                 URL: https://issues.apache.org/jira/browse/HBASE-13370
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 1.0.0, 1.0.1
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>         Attachments: HBASE-13370.patch
>
>
> Currently in PE tool all the scans and gets adds explicitly the columns to be scanned.  The tool by default adds only one Qualifier.  Doing this addColumns leads to Explicit Column Tracker which does seeks frequently. If we want to know a simple scan performance as a basic scenario then we should have the option to add this columns explicitly.



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