[ 
https://issues.apache.org/jira/browse/HBASE-20394?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Nihal Jain updated HBASE-20394:
-------------------------------
    Description: 
Currently HBase will over ride the value of HBASE_OPTS (if any) set by user
{code:java}
export HBASE_OPTS="-XX:+UseConcMarkSweepGC" {code}
[See 
hbase-env.sh|https://github.com/apache/hbase/blob/68726b0ee3ef3eb52d32481444e64236c5a9e733/conf/hbase-env.sh#L43]

 

But, a user may have the following set in his environment:
{code:java}
HBASE_OPTS="-Xmn512m"{code}
While starting the processes, HBase will internally over-ride the existing 
HBASE_OPTS value with the one set in hbase-env.sh.

 

Instead of overriding we can have the folowing in hbase-env.sh:
{code:java}
export HBASE_OPTS="$HBASE_OPTS -XX:+UseConcMarkSweepGC"{code}
 

  was:
Currently HBase will over ride the value of HBASE_OPTS (if any) set by client

[
{code:java}
export HBASE_OPTS="-XX:+UseConcMarkSweepGC"{code}
|

https://github.com/apache/hbase/blob/68726b0ee3ef3eb52d32481444e64236c5a9e733/conf/hbase-env.sh#L43

]

For example a client may have the following set in his environment:
{code:java}
HBASE_OPTS="-Xmn512m"{code}
 

While starting the processes, HBase will internally over-ride the existing 
HBASE_OPTS value with the one set in hbase-env.sh.

 

Instead of overriding we can have the folowing in hbase-env.sh:
{code:java}
export HBASE_OPTS="$HBASE_OPTS -XX:+UseConcMarkSweepGC"{code}
 


> HBase over rides the value of HBASE_OPTS (if any) set by client
> ---------------------------------------------------------------
>
>                 Key: HBASE-20394
>                 URL: https://issues.apache.org/jira/browse/HBASE-20394
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Nihal Jain
>            Priority: Minor
>
> Currently HBase will over ride the value of HBASE_OPTS (if any) set by user
> {code:java}
> export HBASE_OPTS="-XX:+UseConcMarkSweepGC" {code}
> [See 
> hbase-env.sh|https://github.com/apache/hbase/blob/68726b0ee3ef3eb52d32481444e64236c5a9e733/conf/hbase-env.sh#L43]
>  
> But, a user may have the following set in his environment:
> {code:java}
> HBASE_OPTS="-Xmn512m"{code}
> While starting the processes, HBase will internally over-ride the existing 
> HBASE_OPTS value with the one set in hbase-env.sh.
>  
> Instead of overriding we can have the folowing in hbase-env.sh:
> {code:java}
> export HBASE_OPTS="$HBASE_OPTS -XX:+UseConcMarkSweepGC"{code}
>  



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