Hello, I am happy to announce release 0.24.0 of Hawkular Metrics. This release is anchored by a new tag query language and general stability improvements. Here is a list of major changes: - *Tag Query Language* - A query language was added to support complex constructs for tag based queries for metrics - The old tag query syntax is deprecated but can still be used; the new syntax takes precedence - The new syntax supports: - logical operators: AND,OR - equality operators: =, != - value in array operators: IN, NOT IN - existential conditions: - tag without any operator is equivalent to = '*' - tag preceded by the NOT operator matches only instances without the tag defined - all the values in between single quotes are treated as regex expressions - simple text values do not need single quotes - spaces before and after equality operators are not necessary - For more details please see: Pull Request 725 <https://github.com/hawkular/hawkular-metrics/pull/725>;, HWKMETRICS-523 <https://issues.jboss.org/browse/HWKMETRICS-523> - Sample queries: a1 = 'bcd' OR a2 != 'efg' a1='bcd' OR a2!='efg' a1 = efg AND ( a2 = 'hijk' OR a2 = 'xyz' ) a1 = 'efg' AND ( a2 IN ['hijk', 'xyz'] ) a1 = 'efg' AND a2 NOT IN ['hijk'] a1 = 'd' OR ( a1 != 'ab' AND ( c1 = '*' ) ) a1 OR a2 NOT a1 AND a2 a1 = 'a' AND NOT b2 a1 = a AND NOT b2 - *Performance* - Updated compaction strategies for data tables from size tiered compaction (STCS) to time window compaction (TWCS) (HWKMETRICS-556 <https://issues.jboss.org/browse/HWKMETRICS-556>) - Jobs now execute on RxJava's I/O scheduler thread pool ( HWKMETRICS-579 <https://issues.jboss.org/browse/HWKMETRICS-579>) - *Administration* - The admin tenant is now configurable via ADMIN_TENANT environment variable (HWKMETRICS-572 <https://issues.jboss.org/browse/HWKMETRICS-572>) - Internal metric collection is disabled by default (HWKMETRICS-578 <https://issues.jboss.org/browse/HWKMETRICS-578>) - Resolved a null pointer exception in DropWizardReporter due to admin tenant changes (HWKMETRICS-577 <https://issues.jboss.org/browse/HWKMETRICS-577>) - *Job Scheduler* - Resolved an issue where the compression job would stop running after a few days (HWKMETRICS-564 <https://issues.jboss.org/browse/HWKMETRICS-564>) - Updated the job scheduler to renew job locks during job execution (HWKMETRICS-570 <https://issues.jboss.org/browse/HWKMETRICS-570>) - Updated the job scheduler to reacquire job lock after server restarts (HWKMETRICS-583 <https://issues.jboss.org/browse/HWKMETRICS-583>) - *Hawkular Alerting - Major Updates* - Resolved several issues where schema upgrades were not applied after the initial schema install (HWKALERTS-220 <https://issues.jboss.org/browse/HWKALERTS-220>;, HWKALERTS-222 <https://issues.jboss.org/browse/HWKALERTS-222>) *Hawkular Alerting - Included* - Version 1.5.1 <https://issues.jboss.org/projects/HWKALERTS/versions/12333065> - Project details and repository: Github <https://github.com/hawkular/hawkular-alerts> - Documentation: REST API <http://www.hawkular.org/docs/rest/rest-alerts.html>;, Examples <https://github.com/hawkular/hawkular-alerts/tree/master/examples>;, Developer Guide <http://www.hawkular.org/community/docs/developer-guide/alerts.html> *Hawkular Metrics Clients* - Python: https://github.com/hawkular/hawkular-client-python - Go: https://github.com/hawkular/hawkular-client-go - Ruby: https://github.com/hawkular/hawkular-client-ruby - Java: https://github.com/hawkular/hawkular-client-java *Release Links* Github Release: https://github.com/hawkular/hawkular-metrics/ releases/tag/0.24.0 JBoss Nexus Maven artifacts: http://origin-repository.jboss.org/nexus/content/repositorie s/public/org/hawkular/metrics/ Jira release tracker: https://issues.jboss.org/projects/HWKMETRICS/versions/12332966 A big "Thank you" goes to John Sanda, Matt Wringe, Michael Burman, Joel Takvorian, Jay Shaughnessy, Lucas Ponce, and Heiko Rupp for their project contributions. Thank you, Stefan Negrea