使用连接器将数据从mongodb导入kafka时，https://github.com/mongodb/mongo-kafka，它抛出 java.lang.IllegalStateException: Queue full .
我使用默认设置 copy.existing.queue.size ，16000，和 copy.existing: true . 我应该设置什么值？收集大小为10g。
环境：

mongo-kafka-connect: 1.0.0
Kafka: 2.4.0
Kafka-Connect: 2.4.0
MongoDB server: 3.6.14
mongodb-driver-sync: 3.12.1

堆栈跟踪： org.apache.kafka.connect.errors.ConnectException: java.lang.IllegalStateException: Queue full\n\tat com.mongodb.kafka.connect.source.MongoCopyDataManager.poll(MongoCopyDataManager.java:95)\n\tat com.mongodb.kafka.connect.source.MongoSourceTask.getNextDocument(MongoSourceTask.java:301)\n\tat com.mongodb.kafka.connect.source.MongoSourceTask.poll(MongoSourceTask.java:154)\n\tat org.apache.kafka.connect.runtime.WorkerSourceTask.poll(WorkerSourceTask.java:265)\n\tat org.apache.kafka.connect.runtime.WorkerSourceTask.execute(WorkerSourceTask.java:232)\n\tat org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:177)\n\tat org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:227)\n\tat java.base\/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)\n\tat java.base\/java.util.concurrent.FutureTask.run(Unknown Source)\n\tat java.base\/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)\n\tat java.base\/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)\n\tat java.base\/java.lang.Thread.run(Unknown Source)\nCaused by: java.lang.IllegalStateException: Queue full\n\tat java.base\/java.util.AbstractQueue.add(Unknown Source)\n\tat java.base\/java.util.concurrent.ArrayBlockingQueue.add(Unknown Source)\n\tat com.mongodb.client.internal.Java8ForEachHelper.forEach(Java8ForEachHelper.java:30)\n\tat com.mongodb.client.internal.Java8AggregateIterableImpl.forEach(Java8AggregateIterableImpl.java:54)\n\tat com.mongodb.kafka.connect.source.MongoCopyDataManager.copyDataFrom(MongoCopyDataManager.java:123)\n\tat com.mongodb.kafka.connect.source.MongoCopyDataManager.lambda$new$0(MongoCopyDataManager.java:87)\n\t... 5 more