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exec-mem-pool-bytes
| Default | 20% of system memory |
| Allowed Values | Percentage (e.g., 70%) or absolute number (0 – 1,610,612,736,000) |
| Category | Memory Management |
Detailed Explanation:
Defines the maximum amount of memory that the query execution engine (DataFusion) can use for processing queries. This includes memory for sorting, aggregation, joins, and intermediate result sets.
Recommendation: Keep at 20% (default) for all instance sizes. For query/reader-only nodes, you can increase up to 70%.
