uros-b commented on code in PR #57443:
URL: https://github.com/apache/spark/pull/57443#discussion_r3637532015
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sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala:
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@@ -765,20 +765,31 @@ object SQLConf {
val RUNTIME_BLOOM_FILTER_ENABLED =
buildConf("spark.sql.optimizer.runtime.bloomFilter.enabled")
- .doc("When true and if one side of a shuffle join has a selective
predicate, we attempt " +
- "to insert a bloom filter in the other side to reduce the amount of
shuffle data.")
+ .doc("When true and if one side of a shuffle join has a selective
predicate, or is a " +
+ "fully materialized, repeatable cache with evidence that pruning is
beneficial, we " +
+ "attempt to insert a bloom filter in the other side to reduce shuffle
data.")
.version("3.3.0")
.booleanConf
.createWithDefault(true)
val RUNTIME_BLOOM_FILTER_CREATION_SIDE_THRESHOLD =
buildConf("spark.sql.optimizer.runtime.bloomFilter.creationSideThreshold")
.doc("Size threshold of the bloom filter creation side plan. Estimated
size needs to be " +
- "under this value to try to inject bloom filter.")
+ "under this value to try to inject a bloom filter, unless the creation
side is fully " +
+ "materialized and has accurate statistics.")
.version("3.3.0")
.bytesConf(ByteUnit.BYTE)
.createWithDefaultString("10MB")
+ val RUNTIME_BLOOM_FILTER_MATERIALIZED_CREATION_SIDE_THRESHOLD =
+
buildConf("spark.sql.optimizer.runtime.bloomFilter.materializedCreationSideThreshold")
+ .doc("Size threshold of a fully materialized, repeatable bloom filter
creation side with " +
+ "accurate statistics. This replaces the general creation-side
threshold because scanning " +
+ "materialized output does not recompute its original plan.")
+ .version("5.0.0")
Review Comment:
Do we want 4.3.0 here instead, or are we intentionally targeting 5.0.0?
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