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From "James Taylor (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PHOENIX-1958) Minimize memory allocation on new connection
Date Sun, 10 May 2015 01:19:59 GMT

     [ https://issues.apache.org/jira/browse/PHOENIX-1958?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

James Taylor updated PHOENIX-1958:
----------------------------------
    Attachment: phoenix-4.2.3-SNAPSHOT-server.jar

> 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
>            Assignee: James Taylor
>             Fix For: 5.0.0, 4.2.3, 4.4.0, 4.3.2
>
>         Attachments: PHOENIX-1958-4.x-HBase-0.98.patch, PHOENIX-1958-addendum.patch,
PHOENIX-1958-master.patch, phoenix-4.2.3-SNAPSHOT-server.jar
>
>
> 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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