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From "James Taylor (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-1958) Minimize memory allocation on new connection
Date Fri, 08 May 2015 17:55:01 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-1958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14535101#comment-14535101
] 

James Taylor commented on PHOENIX-1958:
---------------------------------------

[~rajeshbabu] - I'll try to put a patch together for this quickly - would be good if we could
get this into 4.4.0.

> Minimize memory allocation on new connection
> --------------------------------------------
>
>                 Key: PHOENIX-1958
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-1958
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: James Taylor
>
> There's a significant amount of memory allocated when a new connection is established
solely to create the ReadOnlyProps. Need to figure out a way to minimize this. It looks like
the majority of memory allocations occur in this org.apache.phoenix.util.ReadOnlyProps constructor:
> https://github.com/apache/phoenix/blob/master/phoenix-core/src/main/java/org/apache/phoenix/util/ReadOnlyProps.java#L61
> Another notable memory allocator is this java.util.HashMap.putAll call:
> https://github.com/apache/phoenix/blob/master/phoenix-core/src/main/java/org/apache/phoenix/jdbc/PhoenixConnection.java#L192



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