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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16224) Reduce the number of RPCs for the large PUTs
Date Thu, 18 Aug 2016 10:25:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16224?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15426228#comment-15426228
] 

Ted Yu commented on HBASE-16224:
--------------------------------

In the new spreadsheet, hbase-master(3, 2000, 2000, 6, seq), what's the meaning of 3 threads
?
Do you know why hbase-16224(3, 2000, 2000, 6, seq) exhibited much better speed up compared
to the case of hbase-16224(3, 2000, 1000, 6, seq) ?

> Reduce the number of RPCs for the large PUTs
> --------------------------------------------
>
>                 Key: HBASE-16224
>                 URL: https://issues.apache.org/jira/browse/HBASE-16224
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: ChiaPing Tsai
>            Assignee: ChiaPing Tsai
>            Priority: Minor
>         Attachments: HBASE-16224-v1.patch, HBASE-16224-v2.patch, HBASE-16224-v3.patch,
HBASE-16224-v4.patch, HBASE-16224-v5.patch, HBASE-16224-v6.patch, HBASE-16224-v7.patch, HBASE-16224-v8.patch,
HBASE-16224-v9.patch, experiment-v9.patch.xlsx, experiment.xlsx
>
>
> This patch is proposed to reduce the number of RPC for the large PUTs 
> The number and data size of write thread(SingleServerRequestRunnable) is a result of
three main factors:
> 1) The flush size taken by BufferedMutatorImpl#backgroundFlushCommits
> 2) The limit of task number
> 3) ClientBackoffPolicy
> A lot of requests created with less MUTATIONs is a result of two reason: 
> 1) many regions of target table are in different server.
> 2) flush size in step one is summed by “all” server rather than “individual”
server
> This patch removes the limit of flush size in step one and add maximum size to submit
for each server in the AsyncProcess



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