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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2718) Copy Constructor HBaseConfiguration(Configuration) will override hbase configurations if argumant is not an instance of HBaseConfiguration.
Date Wed, 30 Jan 2008 12:55:38 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12564005#action_12564005
] 

Hudson commented on HADOOP-2718:
--------------------------------

Integrated in Hadoop-trunk #384 (See [http://hudson.zones.apache.org/hudson/job/Hadoop-trunk/384/])

> Copy Constructor HBaseConfiguration(Configuration) will override hbase configurations
if argumant is not an instance of HBaseConfiguration.
> -------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-2718
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2718
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/hbase
>            Reporter: Clint Morgan
>            Priority: Blocker
>             Fix For: 0.16.0
>
>         Attachments: conf.patch
>
>
> Copy Constructor HBaseConfiguration(Configuration) will override hbase
> settings from the argument if the arg is not an instance of HBaseConfiguration.
> This was happening to me when I was passing around hbase settings as
> part of a Table Map/Reduce job configuration.
> Observer the following unexpected behavior:
> JobConf jobConf = new JobConf("job.xml");
> HBaseConfiguration hbaseConf = new HBaseConfiguration(jobConf);
> String result1 = jobConf.get("hbase.master");  // Value from job.xml loaded by tasktracker
> String result2 = hbaseConf.get("hbase.master"); // Value from hbase-site.xml
> Assert.assertEquals(result1, result2); // Fail 
> In particular, this copy constructor is called in hbase.mapred.TableInputFormat.configure(JobConf).
> I have a hbase.master defined in my JobConf that gets overridden in the HbaseConfiguration
by hbase-site.xml.
> Should the Constructor instead add new hbase-specific values if they are not already
defined in the Configuration parameter?

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