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From "Jonathan Hsieh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8372) Provide mutability to CompoundConfiguration
Date Tue, 23 Apr 2013 01:51:15 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8372?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13638705#comment-13638705
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Jonathan Hsieh commented on HBASE-8372:
---------------------------------------

bq. When mutableConf is not null, can we get rid of the list of ImmutableConfigMap's ?
bq. This consolidation can be achieved upon the first call to set().

[~tedyu@apache.org], I don't that is correct unless we go through and copy all the values
from the parents.  Doing that seems to negate the purpose of having the CompoundConfiguariton.
 We also would lose the ability to change a parent configuration under this config and have
the change visible to CompoundConfiguration (I believe there the original comments have something
about this).  
                
> Provide mutability to CompoundConfiguration
> -------------------------------------------
>
>                 Key: HBASE-8372
>                 URL: https://issues.apache.org/jira/browse/HBASE-8372
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Ted Yu
>            Assignee: Jonathan Hsieh
>         Attachments: hbase-8372.patch
>
>
> In discussion of HBASE-8347, it was proposed that CompoundConfiguration should support
mutability.
> This can be done by consolidating ImmutableConfigMap's on first modification to CompoundConfiguration.

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