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7 changes: 7 additions & 0 deletions docs/sql-programming-guide.md
Original file line number Diff line number Diff line change
Expand Up @@ -1520,6 +1520,13 @@ that these options will be deprecated in future release as more optimizations ar
Configures the number of partitions to use when shuffling data for joins or aggregations.
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<td><code>spark.sql.planner.externalSort</code></td>
<td>false</td>
<td>
When true, performs sorts spilling to disk as needed otherwise sort each partition in memory.
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# Distributed SQL Engine
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