Dave Latham created HBASE-8025:
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             Summary: zkcli fails when SERVER_GC_OPTS is enabled
                 Key: HBASE-8025
                 URL: https://issues.apache.org/jira/browse/HBASE-8025
             Project: HBase
          Issue Type: Bug
    Affects Versions: 0.94.4
            Reporter: Dave Latham
             Fix For: 0.95.0, 0.98.0, 0.94.7


HBASE-7091 added logic to separate GC logging options for some client commands 
versus server commands.  It uses a list of known client commands ("shell" 
"hbck" "hlog" "hfile" "zkcli") and uses the server GC logging options for all 
other invocations of bin/hbase.  When zkcli is invoked, it in turn invokes 
"hbase org.apache.hadoop.hbase.zookeeper.ZooKeeperMainServerArg" to gather the 
server command line arguments, but because 
org.apache.hadoop.hbase.zookeeper.ZooKeeperMainServerArg is not on the white 
list it enables server GC logging, which causes extra output that causes the 
zkcli invocation to break.  HBASE-1753 addressed this but the fix only solved 
the array syntax - not the white list.

There are many other tools you can invoke that are more likely to "client" than 
"server" options. For example, "bin/hbase org.jruby.Main region_mover.rb" or 
"bin/hbase org.apache.hadoop.hbase.mapreduce.CopyTable" or "bin/hbase version" 
or "bin/hbase org.apache.hadoop.hbase.mapreduce.Export". The whitelist of 
server commands is shorter and easier to maintain than a whitelist of client 
commands.

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