adoroszlai opened a new pull request #1572:
URL: https://github.com/apache/ozone/pull/1572


   ## What changes were proposed in this pull request?
   
   If `HADOOP_HOME` does not point to Ozone install, make an attempt to find it 
relative to the script being run.  This logic is copied from `start-ozone.sh`, 
where it was added for HDDS-1912 to fix similar problem.
   
   https://issues.apache.org/jira/browse/HDDS-4450
   
   ## How was this patch tested?
   
   Tested using `ozonescripts` compose environment after temporarily adding 
`HADOOP_HOME=/usr/local/hadoop` to `docker-config`.  Verified that all three 
scripts (`ozone` and `stop-ozone.sh`, changed here, and `start-ozone.sh`, 
changed previously) work fine.
   
   ```
   cd hadoop-ozone/dist/target/ozone-1.1.0-SNAPSHOT/compose/ozonescripts
   docker-compose up -d
   # <wait a bit>
   ./start.sh
   ...
   ./ps.sh
   # <output with Ozone processes>
   docker-compose exec scm bash
   bash-4.2$ ozone freon ockg -n1 -t1 -F ONE
   ...
   Successful executions: 1
   bash-4.2$ echo $HADOOP_HOME
   /usr/local/hadoop
   bash-4.2$ exit
   ./stop.sh
   ...
   ./ps.sh
   # <no more Ozone process>
   ```


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