[jira] [Comment Edited] (HBASE-16213) A new HFileBlock structure for fast random get

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

    [ https://issues.apache.org/jira/browse/HBASE-16213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16318828#comment-16318828 ] 

stack edited comment on HBASE-16213 at 1/9/18 6:02 PM:
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[~carp84] + [~aoxiang] Did you fellows deploy this on hbase:meta? Thanks. Asking because seeing hits against hbase:meta that are mostly random gets and thinking this could help.


was (Author: stack):
[~carp84] + [~aoxiang] Did you fellows deploy this on hbase:meta? Thanks.

> 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
>          Components: Performance
>            Reporter: binlijin
>            Assignee: binlijin
>             Fix For: 2.0.0, 1.4.0
>
>         Attachments: HBASE-16213-master_v1.patch, HBASE-16213-master_v3.patch, HBASE-16213-master_v4.patch, HBASE-16213-master_v5.patch, HBASE-16213-master_v6.patch, HBASE-16213.branch-1.v1.patch, HBASE-16213.branch-1.v4.patch, HBASE-16213.branch-1.v4.patch, HBASE-16213.patch, HBASE-16213_branch1_v3.patch, HBASE-16213_v2.patch, hfile-cpu.png, hfile_block_performance.pptx, hfile_block_performance2.pptx, hfile_block_performance_E2E.pptx
>
>
> 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.
> I use EncodedSeekPerformanceTest test the performance.
> First use ycsb write 100w data, every row have only one qualifier, and valueLength=16B/64/256B/1k.
> Then use EncodedSeekPerformanceTest to test random read 1w or 100w row, and also record HFileBlock's dataSize/dataWithMetaSize in the encoding.



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