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Posted to user@accumulo.apache.org by "Robert J. Moore" <Ro...@allanbank.com> on 2015/10/23 03:53:48 UTC

[ANNOUNCE] YCSB 0.4.0 Release

On behalf of the development community, I am pleased to announce the 
release of YCSB 0.4.0.

Highlights:

* Default measurement changed from histogram to hdrhistogram.
     * Users who want previous behavior can set the 'measurementtype' 
property to 'histogram'.
     * Reported 95th and 99th percentile latencies now in microseconds 
(previously in milliseconds).
* The HBase Binding has been split into 3 seperate bindings based on 
your version of HBase and
the names have changed to hbase10, hbase098, and hbase094.

Bug Fixes:

* Previously, with hdrhistogram, the 95th percentile actually reported 
the 90th percentile value. It now reports the actual 95th percentile value.
* Fixed a race condition between insert and read/update operations.


Full release notes, including links to source and convenience binaries:

https://github.com/brianfrankcooper/YCSB/releases/tag/0.4.0

This release covers changes from the last 2 months.

--
Rob