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From "Benjamin Lerer (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-10837) Cluster/session should be closed in Cassandra Hadoop Input/Output classes
Date Thu, 17 Dec 2015 13:43:46 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-10837?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Benjamin Lerer updated CASSANDRA-10837:
---------------------------------------
    Assignee: Alex Liu  (was: Benjamin Lerer)

> Cluster/session should be closed in Cassandra Hadoop Input/Output classes
> -------------------------------------------------------------------------
>
>                 Key: CASSANDRA-10837
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10837
>             Project: Cassandra
>          Issue Type: Bug
>          Components: CQL
>            Reporter: Alex Liu
>            Assignee: Alex Liu
>             Fix For: 3.0.x
>
>         Attachments: 10837-3.0-branch.txt, 10837-3.0-v4.txt, 10837-v2-3.0-branch.txt,
10837-v3-3.0-branch.txt
>
>
> See a lot of following warnings during Hadoop job running
> {code}
> ERROR 11:37:45 LEAK: You are creating too many HashedWheelTimer instances.  HashedWheelTimer
is a shared resource that must be reused across the JVM,so that only a few instances are created.
> {code}
> Each cluster/session needs be closed and a shared HashedWheelTimer may reduce the resource
leakage.



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