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https://issues.apache.org/jira/browse/HBASE-3909?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13487462#comment-13487462
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Ted Yu commented on HBASE-3909:
-------------------------------
Excerpt from
http://docs.oracle.com/javase/6/docs/api/java/util/concurrent/ConcurrentHashMap.html
:
bq. Like Hashtable but unlike HashMap, this class does not allow null to be
used as a key or value.
So the user is not able to specify null value. I think my suggestion is safe.
> Add dynamic config
> ------------------
>
> Key: HBASE-3909
> URL: https://issues.apache.org/jira/browse/HBASE-3909
> Project: HBase
> Issue Type: Bug
> Reporter: stack
> Assignee: Subbu M Iyer
> Fix For: 0.96.0
>
> Attachments: 3909_090712-2.patch, 3909-102812.patch,
> 3909-102912.patch, 3909.v1, 3909-v1.patch, HBase Cluster Config Details.xlsx,
> patch-v2.patch, testMasterNoCluster.stack
>
>
> I'm sure this issue exists already, at least as part of the discussion around
> making online schema edits possible, but no hard this having its own issue.
> Ted started a conversation on this topic up on dev and Todd suggested we
> lookd at how Hadoop did it over in HADOOP-7001
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