gp_workfile_checksumming
Adds a checksum value to each block of a work file (or spill file) used by HashAgg and HashJoin query operators. This adds an additional safeguard from faulty OS disk drivers writing corrupted blocks to disk. When a checksum operation fails, the query will cancel and rollback rather than potentially writing bad data to disk.
Value Range | Default | Set Classifications |
---|---|---|
Boolean | on | master session reload |