Github user rxin commented on a diff in the pull request: https://github.com/apache/spark/pull/13310#discussion_r64671502 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala --- @@ -70,6 +70,27 @@ object SQLConf { .intConf .createWithDefault(10) + val ALLOW_MULTIPLE_CONTEXTS = SQLConfigBuilder("spark.sql.allowMultipleContexts") + .doc("When set to true, creating multiple SQLContexts/HiveContexts is allowed. " + + "When set to false, only one SQLContext/HiveContext is allowed to be created " + + "through the constructor (new SQLContexts/HiveContexts created through newSession " + + "method is allowed). Please note that this conf needs to be set in Spark Conf. Once " + + "a SQLContext/HiveContext has been created, changing the value of this conf will not " + + "have effect.") + .booleanConf + .createWithDefault(false) --- End diff -- this should be internal
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