Release - Federate 7.17.7 - 29.0

We’re happy to announce today the release of Siren Federate version 29 for Elasticsearch version 7.17.7. This release includes the following enhancements and fixes:

New features:

  • Added ROUTING_JOIN as a new join strategy optimized for use cases when joining on the parent set’s _id field.
  • Added the Siren Consolidator, an ingest processor for consolidating data from different indices.


  • Upgraded Elasticsearch to 7.17.7.
  • Upgraded Arrow to version 9.0.0.
  • Improved the performance of joins on the _id field.
  • Updated the Federate architecture diagram.

Bug fixes:

  • Fixed a race condition issue when executing a multi-search request.
  • Fixed dead links in the documentation.


  • Removed deprecated settings packet_size and

Download it here.