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From "binlijin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16213) A new HFileBlock structure for fast random get
Date Fri, 15 Jul 2016 02:59:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15378779#comment-15378779
] 

binlijin commented on HBASE-16213:
----------------------------------

ROW_INDEX_V2 store column family only once, so the overhead will do not have so much, but
current do not have this version for master.
And the third version will store every row only once, and this version do not have implement
now.

> 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-master_v1.patch, 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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