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From "Vihang Karajgaonkar (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-20258) Should Syncronize getInstance in ReplChangeManager
Date Fri, 24 Aug 2018 19:36:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-20258?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vihang Karajgaonkar updated HIVE-20258:
---------------------------------------
       Resolution: Fixed
    Fix Version/s: 3.2.0
                   4.0.0
           Status: Resolved  (was: Patch Available)

Patch merged in master and branch-3. Thanks for your contribution [~belugabehr]

> Should Syncronize getInstance in ReplChangeManager
> --------------------------------------------------
>
>                 Key: HIVE-20258
>                 URL: https://issues.apache.org/jira/browse/HIVE-20258
>             Project: Hive
>          Issue Type: Bug
>          Components: Metastore
>    Affects Versions: 3.0.0, 4.0.0
>            Reporter: BELUGA BEHR
>            Assignee: BELUGA BEHR
>            Priority: Minor
>             Fix For: 4.0.0, 3.2.0
>
>         Attachments: HIVE-20258.1.patch
>
>
> {code:java}
>   public static ReplChangeManager getInstance(Configuration conf) throws MetaException
{
>     if (instance == null) {
>       instance = new ReplChangeManager(conf);
>     }
>     return instance;
>   }
> {code}
> This method needs to be synchronized or two different threads may see a 'null' value
and each create their own manager.



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