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https://issues.apache.org/jira/browse/HBASE-20394?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16437654#comment-16437654
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stack commented on HBASE-20394:
-------------------------------
Picked to branch-2.0 for the operators.
> 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
> Components: Operability
> Reporter: Nihal Jain
> Assignee: Nihal Jain
> Priority: Minor
> Fix For: 2.0.0
>
> Attachments: HBASE-20394.master.001.patch
>
>
> 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 over-riding we can have the following in hbase-env.sh:
> {code:java}
> export HBASE_OPTS="$HBASE_OPTS -XX:+UseConcMarkSweepGC"{code}
>
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