[jira] Updated: (HBASE-2794) ROWCOL bloom filter not used if multiple columns within same family are requested in a Get

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

     [ https://issues.apache.org/jira/browse/HBASE-2794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Todd Lipcon updated HBASE-2794:
-------------------------------

    Tags: noob

> ROWCOL bloom filter not used if multiple columns within same family are requested in a Get
> ------------------------------------------------------------------------------------------
>
>                 Key: HBASE-2794
>                 URL: https://issues.apache.org/jira/browse/HBASE-2794
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Kannan Muthukkaruppan
>
> Noticed the following snippet in StoreFile.java:Scanner:shouldSeek():
> {code}
>         switch(bloomFilterType) {
>           case ROW:
>             key = row;
>             break;
>           case ROWCOL:
>             if (columns.size() == 1) {
>               byte[] col = columns.first();
>               key = Bytes.add(row, col);
>               break;
>             }
>             //$FALL-THROUGH$
>           default:
>             return true;
>         }
> {code}
> If columns.size > 1, then we currently don't take advantage of the bloom filter.  We should optimize this to check bloom for each of columns and if none of the columns are present in the bloom avoid opening the file.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.