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From "Heng Chen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16224) Reduce the number of RPCs for the large PUTs
Date Tue, 23 Aug 2016 03:59:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16224?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15432098#comment-15432098
] 

Heng Chen commented on HBASE-16224:
-----------------------------------

And to be honest,  RowAccess introduced make the code more complicated,  and it has no relates
with the issue too,  i think we'd better split the patch into three subtasks:
1.  Reduce the number of RPCs for the large PUTs
2.  Improve the performance with RowAccess to avoid data copy
3.  Just honor the decision for allowed region  (My comments about TaskCountChecker on RB)


wdyt? [~chia7712] [~tedyu] [~stack]

> 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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