TigerGraph DB Release Notes

TigerGraph Server 4.2.0 Alpha was released on March 4, 2025.

This is an alpha release of Version 4.2, available in the new Community Edition. It does not contain all the features that will be in 4.2.0 Preview.

TigerGraph 4.2’s feature set is an enhancement of what was available in 4.1.2. Therefore, features that were in 4.1.2 are not considered New Features.

Key New Features

  • Hybrid Vector Search: Storage of and similarity search for vector attributes associated with vertices.

    • New VECTOR attribute data type with real-time updates

    • Fast approximate nearest neighborhood (ANN)

    • top-K search

    • automatic indexing

    • incremental indexing

    • hybrid graph + vector search in GSQL

  • Community Edition of TigerGraph Database: The TigerGraph Database is now available to download in a Community Edition for self-managed, on-premises deployment, for no license fee and no expiration date.

    • up to 200GB graph data + 100GB vector data

    • single server

    • some enterprise features are not included

    • may be used for production, no fee

    • community support only

      See a full comparison of editions.

Fixed issues

TBA

Compatibility Issues

Description Version Introduced

In CDC messages, the format of map values has changed.

v4.1.1

A full export package now includes access policies and template queries.

v4.1.0

Users could encounter file input/output policy violations when upgrading a TigerGraph version. See Input policy backward compatibility.

v3.10.0

When a PRINT argument is an expression, the output uses the expression as the key (label) for that output value. To better support Antlr processing, PRINT now removes any spaces from that key. For example, count(DISTINCT @@ids) becomes count(DISTINCT@@ids).

v3.9.3+

Betweenness Centrality algorithm: reverse_edge_type (STRING) parameter changed to reverse_edge_type_set (SET<STRING>), to be consistent with edge_type_set and similar algorithms.

v3.9.2+

For vertices with string-type primary IDs, vertices whose ID is an empty string will now be rejected.

v3.9.2+

The default mode for the Kafka Connector changed from EOF="false" to EOF="true".

v3.9.2+

The default retention time for two monitoring services Informant.RetentionPeriodDays and TS3.RetentionPeriodDays has reduced from 30 to 7 days.

v3.9.2+

The filter for /informant/metrics/get/cpu-memory now accepts a list of ServiceDescriptors instead of a single ServiceDescriptor.

v3.9.2+

Some user-defined functions (UDFs) may no longer be accepted due to increased security screening.

  • UDFs may no longer be called to_string(). This is now a built-in GSQL function.

  • UDF names may no longer use the tg_ prefix. Any user-defined function that began with tg_ must be renamed or removed in ExprFunctions.hpp.

v3.9+

Deprecations

Description Deprecated Removed

The format for tuple structures in CDC messages will change in a future veresion. The future format is likely to be similar to the new format for maps.

4.1.1

TBD (possibly 4.2)

Release notes for previous versions