How can I stop the entire HDP stack of services from the CLI? I seem to recall that there was a command to accomplish this but I can not find it. It would seem like this facility would be associated with the ambari-agent service but I did not see any such method/action on the usage for this script/service. ... View more

I recently setup HDP (HBase) on a single VM which had ~15GB of space. The installation went fine but after ~2 months the system ran out of HDD space. I'd like to come up with a method for clearing out the metrics or truncating them. While researching this I drilled down to this directory where the bulk of the space is being used: $ du -sh /var/lib/ambari-metrics-collector/hbase/data/default/* | sort -rh | head -5 7.1G /var/lib/ambari-metrics-collector/hbase/data/default/METRIC_AGGREGATE 403M /var/lib/ambari-metrics-collector/hbase/data/default/METRIC_RECORD_MINUTE 209M /var/lib/ambari-metrics-collector/hbase/data/default/METRIC_RECORD 76M /var/lib/ambari-metrics-collector/hbase/data/default/METRIC_AGGREGATE_HOURLY 45M /var/lib/ambari-metrics-collector/hbase/data/default/METRIC_RECORD_HOURLY I've toyed with several methods of truncating these files using the `truncate -s 0 <file>` command but this trashes the files so that they're no longer usable by AMS. Questions Is there a simple way to reset the metrics? Is there a safe way to delete the data collected periodically, from say a cron job? NOTE: This is a small installation and I don't have the ability to throw more HDD space at the problem. I'd like to keep AMS enabled if possible. ... View more

I support an application that was written to HBase 0.98. I'd like to be able to utilize the latest HDP 2.3 but still be able to downgrade just this one app in my stack to a particular version. Is this possible? I know I could facilitate this through the package management on the box, YUM & RPM, but I'd rather be able to drive this from Ambari if possible. ... View more