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Type: integer
Default: 64
Min: 0
Max: 715827882
Unit: 8kB
Context: user
Restart: false
Since: 10

Sets the minimum amount of index data that must be scanned in order for a parallel scan to be considered. Note that a parallel index scan typically won't touch the entire index; it is the number of pages which the planner believes will actually be touched by the scan which is relevant. The default is 512 kilobytes (512kB).