phoenix-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "James Taylor (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (PHOENIX-1270) Avoid retrieve metadata from server to gain performance
Date Sun, 24 Jan 2016 03:43:39 GMT

     [ https://issues.apache.org/jira/browse/PHOENIX-1270?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

James Taylor resolved PHOENIX-1270.
-----------------------------------
    Resolution: Duplicate

Duplicate of PHOENIX-2520

> Avoid retrieve metadata from server to gain performance
> -------------------------------------------------------
>
>                 Key: PHOENIX-1270
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-1270
>             Project: Phoenix
>          Issue Type: Improvement
>    Affects Versions: 3.0.0
>            Reporter: daniel meng
>            Assignee: James Taylor
>         Attachments: PHOENIX-1270.patch
>
>
> Now the SELECT or UPSERT(when autoCommit is TRUE) will need one extra RPC for retrieve
metadata from RS. In some cases where metadata rarely changed and higher TPS is required,
we should let the client have a choice to use cache directly for better performance. the attached
patch do two :
> 1. enable metadata cache self refresh (switch by "phoenix.cache.autoRefresh")
> 2. client can use hint /\*+ALWAYS_USE_META_CACHE\*/ to force compiler to use cache frist
> thanks in advance for your advice



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message