hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Harsh J (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-891) DataNode.instantiateDataNode calls system.exit(-1) if conf.get("dfs.network.script") != null
Date Sat, 07 Jan 2012 15:55:39 GMT

     [ https://issues.apache.org/jira/browse/HDFS-891?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Harsh J updated HDFS-891:

    Attachment: HDFS-891.patch

I think we can do away with this check. It is a wrong prop name today, and even if it does
exist in the configuration, its not an issue if we already ignore it.

Patch that gets rid of this legacy check.
> DataNode.instantiateDataNode calls system.exit(-1) if conf.get("dfs.network.script")
!= null
> --------------------------------------------------------------------------------------------
>                 Key: HDFS-891
>                 URL: https://issues.apache.org/jira/browse/HDFS-891
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node
>    Affects Versions: 0.22.0
>            Reporter: Steve Loughran
>            Priority: Minor
>         Attachments: HDFS-891.patch
> Looking at the code for {{DataNode.instantiateDataNode())} , I see that it calls {{system.exit(-1)}}
if it is not happy with the configuration
> {code}
>     if (conf.get("dfs.network.script") != null) {
>       LOG.error("This configuration for rack identification is not supported" +
>           " anymore. RackID resolution is handled by the NameNode.");
>       System.exit(-1);
>     }
> {code}
> This is excessive. It should throw an exception and let whoever called the method decide
how to handle it. The {{DataNode.main()}} method will log the exception and exit with a -1
value, but other callers (such as anything using {{MiniDFSCluster}} will now see a meaningful
message rather than some Junit "tests exited without completing" warning. 
> Easy to write a test for the correct behaviour: start a {{MiniDFSCluster}} with this
configuration set, see what happens.

This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira


View raw message