We are using camel kafka to read message in a batch and process them , intermittently we are seeing poll failures and resulted in messages getting lost.

java.lang.NullPointerException: Cannot invoke “java.util.List.add(Object)” because “this.exchangeList” is null
at org.apache.camel.component.kafka.consumer.support.batching.KafkaRecordBatchingProcessor.processExchange(KafkaRecordBatchingProcessor.java:137)
at org.apache.camel.component.kafka.consumer.support.batching.KafkaRecordBatchingProcessorFacade.processPolledRecords(KafkaRecordBatchingProcessorFacade.java:59)
at org.apache.camel.component.kafka.KafkaFetchRecords.startPolling(KafkaFetchRecords.java:353)

same issue for camel 4.4.0 & came 4.6.0