Hawkular Metrics 0.19.0 发布
欢迎加入运维网交流群：263444886http://onexin.iyunv.com/source/plugin/onexin_bigdata/https://my.oschina.net/img/hot3.pngHawkular Metrics 0.19.0 发布了，该版本在性能和REST API方面做了全面的增强，主要包括：
[*] 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)
[*] 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
Release Links
[*] Github Release: https://github.com/hawkular/hawkular-metrics/releases/tag/0.19.0
[*] 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
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