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From "Myroslav Papirkovskyy (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-12224) Ambari should not configure hbase.regionserver.global.memstore.upperLimit in HDP-2.3
Date Tue, 30 Jun 2015 19:34:04 GMT
Myroslav Papirkovskyy created AMBARI-12224:
----------------------------------------------

             Summary: Ambari should not configure hbase.regionserver.global.memstore.upperLimit
in HDP-2.3
                 Key: AMBARI-12224
                 URL: https://issues.apache.org/jira/browse/AMBARI-12224
             Project: Ambari
          Issue Type: Bug
          Components: ambari-server
    Affects Versions: 2.1.0
            Reporter: Myroslav Papirkovskyy
            Assignee: Myroslav Papirkovskyy
            Priority: Critical
             Fix For: 2.1.0


HBase has deprecated {{hbase.regionserver.global.memstore.upperLimit}} and {{hbase.regionserver.global.memstore.lowerLimit}}
for HDP-2.3 in favor of {{hbase.regionserver.global.memstore.size}} and {{hbase.regionserver.global.memstore.size.lower.limit}}.


The slider called "% of RegionServer Allocated to Write Buffers" sets {{hbase.regionserver.global.memstore.size}},
while {{hbase.regionserver.global.memstore.upperLimit}} is in the advanced configuration section.
This leaves two bugs: 

 - In HDP-2.2, the slider has no affect since HBase basically ignores the parameter.
 - In HDP-2.3 the value set by the slider also has no affect since the deprecated values set
take precedence. 

One solution is to get rid of {{hbase.regionserver.global.memstore.upperLimit}} and {{hbase.regionserver.global.memstore.lowerLimit}}
in advanced settings in Ambari, and make the slider configuration to use {{hbase.regionserver.global.memstore.upperLimit}}
in HDP-2.2 and {{hbase.regionserver.global.memstore.size}} in HDP-2.3. Rolling upgrade can
convert these settings. 



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