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From "ChiaPing Tsai (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16224) Reduce the number of RPCs for the large PUTs
Date Sat, 27 Aug 2016 20:30:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16224?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15442184#comment-15442184
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ChiaPing Tsai commented on HBASE-16224:
---------------------------------------

hi [~chenheng]

The test is as follows.

||region count, put count, kv count||elapsed time for new count checker||elapsed time for
previous count checker||
|6, 2000, 2000|6.8s|27.1s|
|6, 2000, 1000|3.6s|9.9s|
|6, 1000, 2000|3.6s|9.8s|
|6, 1000, 1000|2.2s|3.3s|

Thanks


> 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, HBASE-16224.branch-1.v9.patch, IntegrationTestBigLinkedList with chaos
monkey (serverKilling) (with backup master).txt, IntegrationTestBigLinkedList with chaos monkey
(serverKilling).txt, IntegrationTestBigLinkedList with chaos monkey (slowDeterministic).txt,
IntegrationTestBigLinkedList with chaos monkey (unbalance).txt, 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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