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

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

    [ https://issues.apache.org/jira/browse/HBASE-16213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16143316#comment-16143316 ] 

Yu Li commented on HBASE-16213:
-------------------------------

bq. I think V2 can replace V1, V2 have space optimize and the same seek perf.
Let's get HBASE-16594 in then if no objections ([~anoop.hbase] please let us know if any comments here sir, thanks), then people like our mighty [~yangzhe1991] could use it and further improve it (smile).

> 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.branch-1.v1.patch, HBASE-16213_branch1_v3.patch, HBASE-16213.branch-1.v4.patch, HBASE-16213.branch-1.v4.patch, 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.patch, HBASE-16213_v2.patch, hfile_block_performance2.pptx, hfile_block_performance_E2E.pptx, hfile_block_performance.pptx, hfile-cpu.png
>
>
> 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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