Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/1272#discussion_r14545788 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/SQLConf.scala --- @@ -64,20 +64,17 @@ trait SQLConf { } def get(key: String): String = { - if (!settings.containsKey(key)) { - throw new NoSuchElementException(key) - } - settings.get(key) + Option(settings.get(key)).orElse(throw new NoSuchElementException(key)) --- End diff -- This follows code style from `BlockManager`: def getLocalFromDisk(blockId: BlockId, serializer: Serializer): Option[Iterator[Any]] = { diskStore.getValues(blockId, serializer).orElse( sys.error("Block " + blockId + " not found on disk, though it should be")) } Anyway `throw` expression return `Nothing`, which can work with both `getOrElse` and `orElse`
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