What is pg_stat_user_tables Showing NULL for last_autoanalyze & last_autovacuum

[Fd Habash <fmhabash@xxxxxxxxx>]

I have been able to locate four google search results with the same inquiry. What’ve been able to understand is …

 

1. If auto-vaccum is working as expected, stats collector does not nullify these values as part of a startup sequence or regular Maitenance. If a relation gets auto[vacuumed|analyzed], the timestamps should remain.
2. A database engine crash or restart with ‘immediate’ option will cause the timestamps to nullify.
3. Table never qualified for vacuuming based on auto-vacuum settings.

 

I can rule out all three scenarios above, but I still see null values. What else could be at play here?

 

 

 

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Thank you