Using GDB To Trace Into a Parallel Worker Spawned By Postmaster During a Large Query

July 9, 2021

1. Introduction I am working on a new PostgreSQL feature that redefines the way a tuple’s visibility status is determined. The feature is working very nicely until I start doing a large SELECT query, which triggers PostgreSQL to spawn multiple parallel workers to process the request. When this happens, the feature I am working on…
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