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From "binlijin (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HBASE-16213) A new HFileBlock structure for fast random get
Date Tue, 12 Jul 2016 12:12:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15372193#comment-15372193
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binlijin edited comment on HBASE-16213 at 7/12/16 12:11 PM:
------------------------------------------------------------

ROW_INDEX_V1 is the first version.
ROW_INDEX_V2 store column family only once.
And the third version store every row only once have not implement.


was (Author: aoxiang):
ROW_INDEX_V1 is the first version.
ROW_INDEX_V2 store column family only once.
And the third version store every rowKey only once have not implement.

> A new HFileBlock structure for fast random get
> ----------------------------------------------
>
>                 Key: HBASE-16213
>                 URL: https://issues.apache.org/jira/browse/HBASE-16213
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: binlijin
>         Attachments: HBASE-16213.patch, HBASE-16213_v2.patch
>
>
> HFileBlock store cells sequential, current when to get a row from the block, it scan
from the first cell until the row's cell.
> The new structure store every row's start offset with data, so it can find the exact
row with binarySearch.



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