Github user ScrapCodes commented on a diff in the pull request: https://github.com/apache/spark/pull/18143#discussion_r119085683 --- Diff: external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/CachedKafkaConsumer.scala --- @@ -383,19 +362,16 @@ private[kafka010] object CachedKafkaConsumer extends Logging { // If this is reattempt at running the task, then invalidate cache and start with // a new consumer if (TaskContext.get != null && TaskContext.get.attemptNumber >= 1) { - removeKafkaConsumer(topic, partition, kafkaParams) - val consumer = new CachedKafkaConsumer(topicPartition, kafkaParams) - consumer.inuse = true - cache.put(key, consumer) - consumer - } else { - if (!cache.containsKey(key)) { - cache.put(key, new CachedKafkaConsumer(topicPartition, kafkaParams)) - } - val consumer = cache.get(key) - consumer.inuse = true - consumer + cache.invalidate(key) } + + val consumer = cache.get(key, new Callable[CachedKafkaConsumer] { --- End diff -- AFAIK, this is possible scala 2.12 onwards. [reference](http://www.scala-lang.org/news/2.12.0#lambda-syntax-for-sam-types)
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