Release Notes 2.2.1
===================

This is a bug fix release in v2.2.x series
------------------------------------------

Improvements and bug fixes
-----------------------------

 - When computations performed by the external Python script that processes monitoring data take
   longer than a full polling cycle, the background thread where this script runs should be
   interrupted. Fixed a bug that prevented this from occurring.

 - improved validation of the regular expressions in the component name and description fields in Graphing Workbench

 - fixed bug in the axis label display in Graphing Workbench (very long labels did not fit)

 - add ability to configure the long- and short-term caches used by NsgQL using configuration file sections
   `cache.dataQueryLongTermCache` and `cache.dataQueryShortTermCache`

 - added separate cache for the results of NsgQL queries that operate on the time series data that
   spans long intervals of time.

 - improved TSDB connectors to allow parallel queries