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From "Uma Maheswara Rao G (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2028) There are lot of ESTABLISHED socket connetions at 50010 port.
Date Mon, 17 Oct 2011 08:50:11 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2028?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13128731#comment-13128731
] 

Uma Maheswara Rao G commented on HDFS-2028:
-------------------------------------------

Hi Zhou,
 AFAIK, ESTABLISTED sockets will be from clients. When we are performing some operations,
obviously there will be some ESTABLISHED sockets. Question here is, after completing the operations
successfully also they are showing? If they are growing and not coming down also problem.
Ideally established sockets will be cleaned after completeing the operation with server.

Thanks
Uma
 
                
> There are lot of ESTABLISHED socket connetions at 50010 port.
> -------------------------------------------------------------
>
>                 Key: HDFS-2028
>                 URL: https://issues.apache.org/jira/browse/HDFS-2028
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node
>    Affects Versions: 0.20.1, 0.20.3
>         Environment: linux server
>            Reporter: Zhou Sheng
>              Labels: hadoop
>
> When I load data into tables of hive via hiver cli or hive server, there are always some
ESTABLISHED or CLOSE_WAIT status socket connections. And these tcp connections won't be released
unless you quit hive or restart hiveserver.

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