BDR 4.1.1¶

This is a maintenance release of BDR 4 which includes new features as well as fixes for issues identified in previous versions.

Type	Category	Description
Feature	User Experience	Add generic function bdr.is_node_connected returns true if the walsender for a given peer is active.
Feature	User Experience	Add generic function bdr.is_node_ready returns boolean if the lag is under a specific span.
Bug fix	User Experience	Add support for a –link argument to bdr_pg_upgrade for using hard-links.
Bug fix	User Experience	Prevent removing a bdr.remove_commit_scope if still referenced by any bdr.node_group as the default commit scope.
Bug fix	Reliability and operability	Correct Raft based switching to Local Mode for CAMO pairs of nodes (RT78928)
Bug fix	Reliability and operability	Prevent a potential segfault in bdr.drop_node for corner cases (RT81900)
Bug fix	User Experience	Prevent use of CAMO or Eager All Node transactions in combination with transaction streaming <br/> Transaction streaming turned out to be problematic in combination with CAMO and Eager All Node transactions. Until this is resolved, BDR now prevents its combined use. This may require CAMO deployments to adjust their configuration to disable transaction streaming, see Transaction Streaming Configuration.

Upgrades¶

This release supports upgrading from the following versions of BDR:

Please make sure you read and understand the process and limitations described in the Upgrade Guide before upgrading.