[
https://issues.apache.org/jira/browse/HBASE-16594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16143366#comment-16143366
]
Anoop Sam John commented on HBASE-16594:
----------------------------------------
+1 on resuming this work. Once the latest patch is available, can do reviews.
Ya lets try getting this in for 2.0
> ROW_INDEX_V2 DBE
> ----------------
>
> Key: HBASE-16594
> URL: https://issues.apache.org/jira/browse/HBASE-16594
> Project: HBase
> Issue Type: Sub-task
> Components: Performance
> Reporter: binlijin
> Assignee: binlijin
> Fix For: 2.0.0, 1.5.0
>
> Attachments: HBASE-16594-master_v1.patch, HBASE-16594-master_v2.patch
>
>
> See HBASE-16213, ROW_INDEX_V1 DataBlockEncoding.
> ROW_INDEX_V1 is the first version which have no storage optimization,
> ROW_INDEX_V2 do storage optimization: store every row only once, store column
> family only once in a HFileBlock.
> ROW_INDEX_V1 is :
> /**
> * Store cells following every row's start offset, so we can binary search to
> a row's cells.
> *
> * Format:
> * flat cells
> * integer: number of rows
> * integer: row0's offset
> * integer: row1's offset
> * ....
> * integer: dataSize
> *
> */
> ROW_INDEX_V2 is :
> * row1 qualifier timestamp type value tag
> * qualifier timestamp type value tag
> * qualifier timestamp type value tag
> * row2 qualifier timestamp type value tag
> * row3 qualifier timestamp type value tag
> * qualifier timestamp type value tag
> * ....
> * integer: number of rows
> * integer: row0's offset
> * integer: row1's offset
> * ....
> * column family
> * integer: dataSize
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
