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9043a1ed3f
The aim of hiding shards is to hide shards from client applications. Certain bg workers (such as pg_cron or Citus maintanince daemon) should be treated like client applications because users can run queries from such bg workers. And, these bg workers should follow the similar application_name checks as client backeends. Certain other bg workers, such as logical replication or postgres' parallel workers, should never hide shards. They are internal operations. Similarly the other backend types like the walsender or checkpointer or autovacuum should never hide shards. |
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