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Ismael Juma commented on KAFKA-4966: ------------------------------------ [~wangbo23], can you please post the stacktrace for the trunk case then? > Producer throw a NullPointerException under a network environment where > packet loss and error packets exist. > ------------------------------------------------------------------------------------------------------------ > > Key: KAFKA-4966 > URL: https://issues.apache.org/jira/browse/KAFKA-4966 > Project: Kafka > Issue Type: Bug > Components: clients > Affects Versions: 0.10.0.1, 0.10.2.0 > Reporter: Bo Wang > > 2017-03-27 18:45:54,757 | ERROR | [kafka-producer-network-thread | > producer-1] | Uncaught error in request completion: | > org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:284) > java.lang.NullPointerException > at > org.apache.kafka.clients.producer.internals.Sender.canRetry(Sender.java:342) > at > org.apache.kafka.clients.producer.internals.Sender.completeBatch(Sender.java:310) > at > org.apache.kafka.clients.producer.internals.Sender.handleProduceResponse(Sender.java:286) > at > org.apache.kafka.clients.producer.internals.Sender.access$100(Sender.java:57) > at > org.apache.kafka.clients.producer.internals.Sender$1.onComplete(Sender.java:372) > at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:282) > at > org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:241) > at > org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:136) > at java.lang.Thread.run(Thread.java:745) -- This message was sent by Atlassian JIRA (v6.3.15#6346)