ulysses-you commented on code in PR #57602:
URL: https://github.com/apache/spark/pull/57602#discussion_r3687490841
##########
docs/sql-performance-tuning.md:
##########
@@ -136,6 +136,18 @@ Configuration of in-memory caching can be done via
`spark.conf.set` or by runnin
</td>
<td>2.1.1</td>
</tr>
+ <tr>
+ <td><code>spark.sql.execution.bypassPartialWindowGroupLimit</code></td>
Review Comment:
addressed
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala:
##########
@@ -4527,6 +4527,17 @@ object SQLConf {
"The threshold of window group limit must be -1, 0 or positive
integer.")
.createWithDefault(1000)
+ val BYPASS_PARTIAL_WINDOW_GROUP_LIMIT =
+ buildConf("spark.sql.execution.bypassPartialWindowGroupLimit")
+ .doc("When true, skips the pre-shuffle partial WindowGroupLimit and runs
only a single " +
+ "WindowGroupLimit after the shuffle. Bypassing the partial window
group limit can " +
+ "improve performance when the pre-shuffle reduction ratio is low. When
false (default), " +
+ "a partial WindowGroupLimit runs before the shuffle and a final one
runs after it.")
+ .version("4.3.0")
+ .withBindingPolicy(ConfigBindingPolicy.SESSION)
Review Comment:
addressed
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