HashBuildHashOuter
Short Description
Waiting for other Parallel Hash participants to finish partitioning the outer relation.
Additional Information​
Seen in parallel hash execution plans waiting for the background worker processes to partition the outer (driven) table.
How to reduce this wait​
No information is available here. Have you seen this wait? Let us know.
Additional Links​
PostgreSQL documentation - Parallel Query
PostgreSQL documentation - The Statistics Collector
EDB - Parallel Hash Joins in PostgreSQL Explained
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