cloud-fan commented on a change in pull request #32932:
URL: https://github.com/apache/spark/pull/32932#discussion_r656799496
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File path: docs/sql-ref-syntax-qry-select-hints.md
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@@ -51,6 +51,10 @@ specified, multiple nodes are inserted into the logical
plan, but the leftmost h
The `REPARTITION_BY_RANGE` hint can be used to repartition to the specified
number of partitions using the specified partitioning expressions. It takes
column names and an optional partition number as parameters.
+* **REPARTITION_BY_AQE**
Review comment:
The doc here is pretty bad...
```
**REBALANCE_PARTITIONS**
The `REBALANCE_PARTITIONS` hint can be used to rebalance the query result
output partitions, so that
every partition is of a reasonable size (not too small and not too big). It
can take column names as
parameters, and try its best to partition the query result by these columns.
This is a best-effort: if
there are skews, Spark will split the skewed partitions, to make these
partitions not too big. This
hint is useful when you need to write the result of this query to a table,
to avoid too small/big files.
This hint is ignored if AQE is not enabled.
```
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