hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Naveen Gangam (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-7021) HiveServer2 memory leak on failed queries
Date Mon, 28 Jul 2014 15:01:58 GMT

     [ https://issues.apache.org/jira/browse/HIVE-7021?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Naveen Gangam updated HIVE-7021:
--------------------------------

    Attachment: HIVE-4629+HIVE-7021.1.patch

I am also attaching the full patch that contains the fixes from both HIVE-4629 + HIVE-7021
build from the trunk today.

> HiveServer2 memory leak on failed queries
> -----------------------------------------
>
>                 Key: HIVE-7021
>                 URL: https://issues.apache.org/jira/browse/HIVE-7021
>             Project: Hive
>          Issue Type: Bug
>          Components: HiveServer2
>    Affects Versions: 0.12.0
>            Reporter: Naveen Gangam
>            Assignee: Naveen Gangam
>             Fix For: 0.14.0
>
>         Attachments: HIVE-4629+HIVE-7021.1.patch, HIVE-7021.1.patch
>
>
> The number of the following objects keeps increasing if a query causes an exception:
> org.apache.hive.service.cli.HandleIdentifier
> org.apache.hive.service.cli.OperationHandle
> org.apache.hive.service.cli.log.LinkedStringBuffer
> org.apache.hive.service.cli.log.OperationLog
> The leak can be observed using a JDBCClient that runs something like this
>                           connection = DriverManager.getConnection("jdbc:hive2://" +
hostname + ":10000/default", "", "");
>                           statement   = connection.createStatement();
>                           statement.execute("CREATE TEMPORARY FUNCTION dummy_function
AS 'dummy.class.name'");
> The above SQL will fail if HS2 cannot load "dummy.class.name" class. Each iteration of
such query will result in +1 increase in instance count for the classes mentioned above.
> This will eventually cause OOM in the HS2 service.



--
This message was sent by Atlassian JIRA
(v6.2#6252)

Mime
View raw message