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From "Radim Kolar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8698) Do not call unneceseary setConf(null) in Configured constructor
Date Thu, 06 Dec 2012 23:15:21 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8698?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13525990#comment-13525990
] 

Radim Kolar commented on HADOOP-8698:
-------------------------------------

because java do not generates no arg constructor for you if constructor with argument exists.
                
> Do not call unneceseary setConf(null) in Configured constructor
> ---------------------------------------------------------------
>
>                 Key: HADOOP-8698
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8698
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: conf
>    Affects Versions: 0.23.3, 3.0.0
>            Reporter: Radim Kolar
>            Priority: Minor
>             Fix For: 0.24.0, 3.0.0
>
>         Attachments: setconf-null.txt
>
>
> no-arg constructor of /org/apache/hadoop/conf/Configured calls setConf(null). This is
unnecessary and it increases complexity of setConf() code because you have to check for not
null object reference before using it. Under normal conditions setConf() is never called with
null reference, so not null check is unnecessary.  

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