[jira] [Created] (HBASE-15924) Enhance hbase services autorestart capability to hbase-daemon.sh

["Loknath Priyatham Teja Singamsetty (JIRA)" <ji...@apache.org>]

Loknath Priyatham Teja Singamsetty  created HBASE-15924:
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             Summary: Enhance hbase services autorestart capability to hbase-daemon.sh 
                 Key: HBASE-15924
                 URL: https://issues.apache.org/jira/browse/HBASE-15924
             Project: HBase
          Issue Type: Improvement
    Affects Versions: 0.98.19
            Reporter: Loknath Priyatham Teja Singamsetty 
             Fix For: 0.98.19


As part of HBASE-5939, the autorestart of hbase services has been added to deal with scenarios where hbase services (master/regionserver/master-backup) gets killed or goes down leading to unplanned outages. The changes were made to hbase-daemon.sh with the help of autorestart option. 

However, the autorestart implementation doesn't work in standalone mode and have few gaps with the implementation as per release notes of HBASE-5939. Here is an attempt to re-design and fix the functionality considered all possible usecases with hbase service operations.

Release Notes of HBASE-5939:
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When launched with autorestart, HBase processes will automatically restart if they are not properly terminated, either by a "stop" command or by a cluster stop. To ensure that it does not overload the system when the server itself is corrupted and the process cannot be restarted, the server sleeps for 5 minutes before restarting if it was already started 5 minutes ago previously. To use it, launch the process with "bin/start-hbase autorestart". This option is not fully compatible with the existing "restart" command: if you ask for a restart on a server launched with autorestart, the server will restart but the next server instance won't be automatically restarted.






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