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From "Vincent Poon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-4489) HBase Connection leak in Phoenix MR Jobs
Date Mon, 08 Jan 2018 18:17:00 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-4489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16316716#comment-16316716
] 

Vincent Poon commented on PHOENIX-4489:
---------------------------------------

[~karanmehta93] I think we should fix this - I didn't mean to imply otherwise.  I was just
saying in our particular use case, I wasn't sure if this was the cause of the issue we're
seeing since we don't run that many MR jobs.

> 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
>         Attachments: PHOENIX-4489.001.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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