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From "Kannan Muthukkaruppan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3005) Add reseek optimization for fetching multiple versions via TimestampsFilter
Date Thu, 16 Sep 2010 09:03:32 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12910054#action_12910054
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Kannan Muthukkaruppan commented on HBASE-3005:
----------------------------------------------

Note: This applies when we use the TimestampsFilter() to fetch a specified set of versions.

Patch looks good to me. Jonathan/Ryan: please review/approve. Thanks.

> Add reseek optimization for fetching multiple versions via TimestampsFilter
> ---------------------------------------------------------------------------
>
>                 Key: HBASE-3005
>                 URL: https://issues.apache.org/jira/browse/HBASE-3005
>             Project: HBase
>          Issue Type: Improvement
>          Components: filters
>            Reporter: Pranav Khaitan
>            Assignee: Pranav Khaitan
>         Attachments: HBASE-PUBLIC-3005-V1.patch
>
>
> Skip between timestamps to avoid the unnecessary read for all the blocks which come in
between.
> For example:
> If we have timestamps from 1 to 1000 for a particular row, family, qualifier and we want
to read only timestamps 990 and 10, then we should be able to read 990 and then jump to 10
instead of doing a sequential read including everything in between.

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