Resolved issues

New Database Parameter: Introduced a new database parameter, OAuth2JITConflictPolicy, to control OAuth2 JIT login for existing users. MERGE, the default, allows OAuth2 login for existing vertica users and grants them the appropriate auth method. This is identical to the existing behavior. If set to IGNORE then existing users require an OAuth2 client authentication granted to log in with an OAuth2 token, no automatic granting is performed.

Users with psuedosuperuser are always treated as if OAuth2JITConflictPolicy is set to IGNORE, ie. they can only use authentication methods that have been explicitly granted.

Fix for 100% CPU Utilization with STRPOS Function: We’ve optimized the behavior of the STRPOS function to significantly improve performance in specific scenarios.

What changed:

Previously, all inputs to STRPOS were converted to UTF-16 to leverage the ICU (International Components for Unicode) library for string comparison. While ICU provides robust support for complex locale-aware comparisons, this conversion introduced overhead—especially for simple use cases.

Now, for simple locales with 1-to-1 character mappings (such as en_US, de_DE, and other locales where each character maps directly between UTF-8 and UTF-16 without requiring normalization or multi-codepoint handling), STRPOS uses a UTF-8 based comparison. This avoids the need for conversion to UTF-16 and bypasses the ICU library entirely, resulting in much faster execution.