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From "Karan Mehta (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-4489) HBase Connection leak in Phoenix MR Jobs
Date Wed, 24 Jan 2018 00:10:00 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-4489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16336604#comment-16336604
] 

Karan Mehta commented on PHOENIX-4489:
--------------------------------------

[~jmahonin] Added the new patch without whitespace changes.

> HBase Connection leak in Phoenix MR Jobs
> ----------------------------------------
>
>                 Key: PHOENIX-4489
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4489
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: Karan Mehta
>            Assignee: Karan Mehta
>            Priority: Major
>         Attachments: PHOENIX-4489.001.patch, PHOENIX-4489.002.patch
>
>
> Phoenix MR jobs uses a custom class {{PhoenixInputFormat}} to determine the splits and
the parallelism of the work. The class directly opens up a HBase connection, which is not
closed after the usage. Independently running MR jobs should not have any concern, however
jobs that run through Phoenix-Spark can cause leak issues if this is left unclosed (since
those jobs run as a part of same JVM). 
> Apart from this, the connection should be instantiated with {{HBaseFactoryProvider.getHConnectionFactory()}}
instead of the default one. It can be useful if a separate client is trying to run jobs and
wants to provide a custom implementation of {{HConnection}}. 
> [~jmahonin] Any ideas?
> [~jamestaylor] [~vincentpoon] Any concerns around this?



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