0.19.0
This release is anchored by performance enhancements and a lot of REST API enhancements.
Here is a list of major changes:
- REST API - Query Improvements
- It is now possible to use relative timestamps when querying for data via
+or-added to timestamp parameters. When used, the timestamp is relative to the local system timestamp (HWKMETRICS-358, HWKMETRICS-457) - Querying for data from earliest available data point has been expanded to raw data queries for gauges and counters (HWKMETRICS-435)
DELETE tenants/{id}has been added to allow the deletion of an entire tenant (HWKMETRICS-446)- AvailabilityType is serialized as simple string in bucket data points (HWKMETRICS-436)
- It is now possible to use relative timestamps when querying for data via
- Performance Enhancements
- The write performance has been increased by 10% across the board after reorganizing the meta-data internal indexes. (HWKMETRICS-422)
- GZIP replaced LZ4 as the compression algorithm for the data table. This produces anywhere between 60% to 70% disk usage savings over LZ4. (HWKMETRICS-454)
- Job Scheduler - Improvements
- The newly introduced internal job scheduler received several improvements and fixes; the main focus was to enhance the scalability and fault tolerance.
- The job scheduler will be used only for internal tasks.
- For more details: HWKMETRICS-221, HWKMETRICS-451, HWKMETRICS-453, HWKMETRICS-94
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
JBoss Nexus Maven artifacts:
http://origin-repository.jboss.org/nexus/content/repositories/public/org/hawkular/metrics/
Jira release tracker:
https://issues.jboss.org/browse/HWKMETRICS/fixforversion/12331192
A big "Thank you" goes to John Sanda, Thomas Segismont, Mike Thompson, Matt Wringe, Michael Burman, Joel Takvorian, and Heiko Rupp for their project contributions.