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From "Guanghao Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17917) Use pread by default for all user scan and switch to streaming read if needed
Date Wed, 10 May 2017 06:02:04 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17917?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16004128#comment-16004128
] 

Guanghao Zhang commented on HBASE-17917:
----------------------------------------

+1.
bq. And we can also keep improving the trySwitchToStreamRead method to make it more intelligent.
Open a new scanner for streaming read will lead a new request to NN. So look forward to see
this improvement in the future.

> Use pread by default for all user scan and switch to streaming read if needed
> -----------------------------------------------------------------------------
>
>                 Key: HBASE-17917
>                 URL: https://issues.apache.org/jira/browse/HBASE-17917
>             Project: HBase
>          Issue Type: Sub-task
>          Components: scan
>    Affects Versions: 2.0.0
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>             Fix For: 2.0.0
>
>         Attachments: HBASE-17917.patch, HBASE-17917-v1.patch, HBASE-17917-v2.patch, HBASE-17917-v2.patch,
HBASE-17917-v3.patch, HBASE-17917-v4.patch, HBASE-17917-v5.patch
>
>
> As said in the parent issue. We need some benchmark here first.



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