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https://issues.apache.org/jira/browse/HBASE-5335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13232978#comment-13232978
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Phabricator commented on HBASE-5335:
------------------------------------
mbautin has commented on the revision "[jira] [HBASE-5335] Dynamic Schema
Config".
INLINE COMMENTS
src/main/java/org/apache/hadoop/hbase/util/CompoundConfiguration.java:222-229
OK, got it. Please note in the comment that these methods are private in some
HDFS versions HBase has to support.
src/main/java/org/apache/hadoop/hbase/HTableDescriptor.java:367 OK, sounds
good.
REVISION DETAIL
https://reviews.facebook.net/D2247
> Dynamic Schema Configurations
> -----------------------------
>
> Key: HBASE-5335
> URL: https://issues.apache.org/jira/browse/HBASE-5335
> Project: HBase
> Issue Type: New Feature
> Reporter: Nicolas Spiegelberg
> Assignee: Nicolas Spiegelberg
> Labels: configuration, schema
> Attachments: D2247.1.patch, D2247.2.patch, D2247.3.patch,
> D2247.4.patch
>
>
> Currently, the ability for a core developer to add per-table & per-CF
> configuration settings is very heavyweight. You need to add a reserved
> keyword all the way up the stack & you have to support this variable
> long-term if you're going to expose it explicitly to the user. This has
> ended up with using Configuration.get() a lot because it is lightweight and
> you can tweak settings while you're trying to understand system behavior
> [since there are many config params that may never need to be tuned]. We
> need to add the ability to put & read arbitrary KV settings in the HBase
> schema. Combined with online schema change, this will allow us to safely
> iterate on configuration settings.
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