<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Mar 29, 2017, at 4:35 AM, Joel Takvorian <<a href="mailto:jtakvori@redhat.com" class="">jtakvori@redhat.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class="gmail_extra"><div class="gmail_quote">On Tue, Mar 28, 2017 at 4:09 PM, John Sanda <span dir="ltr" class=""><<a href="mailto:jsanda@redhat.com" target="_blank" class="">jsanda@redhat.com</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="word-wrap:break-word" class="">We are introducing a feature to purge metric definitions that have not received any data for some time.<div class=""><div class="gmail-h5"><div class=""><div class=""><br class=""></div></div></div></div></div></blockquote><div class=""><br class=""></div><div class="">If I understand this PR [1], metrics are eligible for deletion only when their data points have all expired. If it's true then fixing the TTL problem also fixes the metrics expiration problem.</div><div class=""><br class=""></div><div class="">[1] <a href="https://github.com/hawkular/hawkular-metrics/pull/785" class="">https://github.com/hawkular/hawkular-metrics/pull/785</a></div></div></div></div></div></blockquote><div><br class=""></div></div>Prior to this PR we added support for metric deletion; however, deletion does not result in immediate deletion of data points. We still let data points in in the data_compressed table expire. We do this because one of the guidelines for using TimeWindowCompactionStrategy (TWCS) is to use a global TTL and not delete data.</body></html>