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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5335) Dynamic Schema Configurations
Date Fri, 29 Mar 2013 22:19:23 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13617792#comment-13617792
] 

Hudson commented on HBASE-5335:
-------------------------------

Integrated in HBase-0.94-security #129 (See [https://builds.apache.org/job/HBase-0.94-security/129/])
    HBASE-8176 Backport HBASE-5335 "Dynamic Schema Configurations" to 0.94 (clockfly) (Revision
1462622)

     Result = FAILURE
tedyu : 
Files : 
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/HColumnDescriptor.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/HConstants.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/HTableDescriptor.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/CompoundConfiguration.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/SplitTransaction.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/Store.java
* /hbase/branches/0.94/src/main/ruby/hbase.rb
* /hbase/branches/0.94/src/main/ruby/hbase/admin.rb
* /hbase/branches/0.94/src/main/ruby/shell/commands/alter.rb
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/HBaseTestCase.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide3.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/coprocessor/TestCoprocessorInterface.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompoundConfiguration.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/regionserver/TestSplitTransaction.java

                
> 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
>             Fix For: 0.95.0
>
>         Attachments: ASF.LICENSE.NOT.GRANTED--D2247.1.patch, ASF.LICENSE.NOT.GRANTED--D2247.2.patch,
ASF.LICENSE.NOT.GRANTED--D2247.3.patch, ASF.LICENSE.NOT.GRANTED--D2247.4.patch, ASF.LICENSE.NOT.GRANTED--D2247.5.patch,
ASF.LICENSE.NOT.GRANTED--D2247.6.patch, ASF.LICENSE.NOT.GRANTED--D2247.7.patch, ASF.LICENSE.NOT.GRANTED--D2247.8.patch,
HBASE-5335-trunk-2.patch, HBASE-5335-trunk-3.patch, HBASE-5335-trunk-3.patch, HBASE-5335-trunk-4.patch,
HBASE-5335-trunk.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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