Fusion AI 4.2.2 Release Notes


Release date: 17 May 2019

Component versions:

Solr 7.5

ZooKeeper 3.4.13

Spark 2.3.2

Jetty 9.4.12.v20180830

Ignite 2.6.0

New features

No new features were introduced in Fusion AI 4.2.2.

See the Fusion Server 4.2.2 release notes for other changes.


  • Recommender jobs are no longer scheduled by default; they must now be scheduled manually or run on demand. (Previously, default recommender jobs were automatically scheduled to run after the _user_item_preferences_aggregation job.)

Other changes

  • The Spark driver now writes error.log and output.log files to var/log/api instead of var/api/work.

  • Query Rewriting UI bug fixes:

    • Fixed an issue in Fusion Server 4.2.0 and 4.2.1 that caused the UI’s search feature to return a Problem with underlying storage when a query was : followed by an additional query term.

    • Fixed a bug that caused the Query Rewriting UI to display an error window that could not be closed.

  • Signals from the Simulator are no longer sent to the signals collection.

  • Fixed an issue in the Text Tagger query stage which prevented query rewrites from working after Save Tags in Context had been enabled.

  • Business rules defined with tags are no longer triggered by queries that contain no tags parameters.