[HBASE-14529] Respond to SIGHUP to reload config - ASF JIRA

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HBase daemons can now be signaled to reload their config by sending SIGHUP to the java process. Not all config parameters can be reloaded.

In order for this new feature to work the hbase-daemon.sh script was changed to use disown rather than nohup. Functionally this shouldn't change anything but the processes will have a different parent when being run from a connected login shell.

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HBase daemons can now be signaled to reload their config by sending SIGHUP to the java process. Not all config parameters can be reloaded. In order for this new feature to work the hbase-daemon.sh script was changed to use disown rather than nohup. Functionally this shouldn't change anything but the processes will have a different parent when being run from a connected login shell.

SIGHUP is the way everyone since the dawn of unix has done config reload.
Lets not be a special unique snowflake.