Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/22847#discussion_r229572426 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala --- @@ -812,6 +812,18 @@ object SQLConf { .intConf .createWithDefault(65535) + val CODEGEN_METHOD_SPLIT_THRESHOLD = buildConf("spark.sql.codegen.methodSplitThreshold") + .internal() + .doc("The threshold of source code length without comment of a single Java function by " + + "codegen to be split. When the generated Java function source code exceeds this threshold" + + ", it will be split into multiple small functions. We cannot know how many bytecode will " + --- End diff -- `The threshold of source-code splitting in the codegen. When the number of characters in a single JAVA function (without comment) exceeds the threshold, the function will be automatically split to multiple smaller ones.`
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