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https://issues.apache.org/jira/browse/HBASE-18378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16086610#comment-16086610
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Ted Yu commented on HBASE-18378:
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Deep copy (merge(Configuration destConf, Configuration srcConf)) has its cost.
I guess we cannot turn on deep copy by default in copy constructor.
> Cloning configuration contained in CoprocessorEnvironment doesn't work
> ----------------------------------------------------------------------
>
> Key: HBASE-18378
> URL: https://issues.apache.org/jira/browse/HBASE-18378
> Project: HBase
> Issue Type: Bug
> Reporter: Samarth Jain
>
> In our phoenix co-processors, we need to clone configuration passed in
> CoprocessorEnvironment.
> However, using the copy constructor declared in it's parent class,
> Configuration, doesn't copy over anything.
> For example:
> {code}
> CorpocessorEnvironment e
> Configuration original = e.getConfiguration();
> Configuration clone = new Configuration(original);
> clone.get(HConstants.ZK_SESSION_TIMEOUT) -> returns null
> e.configuration.get(HConstants.ZK_SEESION_TIMEOUT) -> returns
> HConstants.DEFAULT_ZK_SESSION_TIMEOUT
> {code}
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