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From "Guanghao Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-18485) Performance issue: ClientAsyncPrefetchScanner is slower than ClientSimpleScanner
Date Fri, 04 Aug 2017 05:16:03 GMT

     [ https://issues.apache.org/jira/browse/HBASE-18485?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Guanghao Zhang updated HBASE-18485:
-----------------------------------
    Issue Type: Improvement  (was: Bug)

> Performance issue: ClientAsyncPrefetchScanner is slower than ClientSimpleScanner
> --------------------------------------------------------------------------------
>
>                 Key: HBASE-18485
>                 URL: https://issues.apache.org/jira/browse/HBASE-18485
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Guanghao Zhang
>            Assignee: Guanghao Zhang
>         Attachments: HBASE-18485-v1.patch, HBASE-18485-v2.patch, HBASE-18485-v3.patch,
HBASE-18485-v4.patch, HBASE-18485-v4.patch, HBASE-18485-v4.patch
>
>
> Copied the test result from HBASE-17994.
> {code}
> ./bin/hbase org.apache.hadoop.hbase.PerformanceEvaluation --rows=100000 --nomapred scan
1
> ./bin/hbase org.apache.hadoop.hbase.PerformanceEvaluation --rows=100000 --nomapred --asyncPrefetch=True
scan 1
> {code}
> Mean latency.
> || ||Test1|| Test2 || Test3 || Test4|| Test5||
> |scan| 12.21 | 14.32 | 13.25 | 13.07 | 11.83 |
> |scan with prefetch=True | 37.36 | 37.88 | 37.56 | 37.66 | 38.28 |



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