Hi stackers, I'm working on solving bug [1]. Time to live feature has native implementation in MongoDB thru index.
Now we remove docs from resource table if they have no relations with existing samples in meter table while samples are removed when time to live is expired. So it seems that we can use ttl index also in resource table and remove reduce operation from the code. We update field last_sample_timestamp in resource table with every new sample that is received from certain resource. So adding ttl index to that field gives the same result as reduce operation in clear_expired_metering_data, but it will work in background with low priority and won't block database. Change request with implementation of ttl index in resource table [2]. [1] https://bugs.launchpad.net/ceilometer/+bug/1270779 [2] https://review.openstack.org/#/c/132988/ Cheers, Igor. _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
