Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/20599#discussion_r168067521
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -675,6 +675,16 @@ object SQLConf {
"disable logging or -1 to apply no limit.")
.createWithDefault(1000)
+ val CODEGEN_TRY_INLINE_ALL_STATES =
+ buildConf("spark.sql.codegen.tryInlineAllStates")
+ .internal()
+ .doc("When adding mutable states during code generation, whether or
not we should try to " +
+ "inline all the states. If this config is false, we only try to
inline primitive stats, " +
+ "so that primitive states are more likely to be inlined. Set this
config to true to make " +
+ "the behavior same as Spark 2.2.")
--- End diff --
yea, let me improve it.
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