我的一个samza任务有一个令人费解的问题。除了一个分区上的消息外，它工作正常。我有9个分区的主题。如果我发送1000条信息，我只收到大约890条。
我已经向kafka控制台使用者检查了分区键，我知道它不会被samza作业处理，控制台使用者确实看到了消息，所以我知道它正在写入主题，至少一个普通使用者可以很好地看到它。
我已经在samza上启用了调试日志记录，并且来自 org.apache.samza.checkpoint.kafka.KafkaCheckpointManager 也就是说：
为taskname分区4添加检查点checkpoint[offset={systemstreampartition[kafka，com.mycompany.indexing.document，4]=448}]
分区4总是写着448。分区0也有类似的日志，但是在显示448的地方，这个数字在稳步增长。
我很乐意分享任何有助于缩小范围的有趣的配置信息，但现在，我对我将要分享的东西有点困惑。
我是作为 ThreadJobFactory 使用：
samza-kafka 2.10版本0.9.1
Kafka2.10版本0.8.2.1在客户端
Kafka经纪人0.9.0.0
更新
我查看了一个使用相同分区键的上游samza作业，发现了分区4上游的问题。用kafkacat检查samza检查点主题，我看到分区4的检查点没有前进。首先我看到：

{"SystemStreamPartition [kafka, resource.mutation, 6]":{"system":"kafka","partition":"6","offset":"96639","stream":"resource.mutation"}}
{"SystemStreamPartition [kafka, resource.mutation, 3]":{"system":"kafka","partition":"3","offset":"47135","stream":"resource.mutation"}}
{"SystemStreamPartition [kafka, resource.mutation, 0]":{"system":"kafka","partition":"0","offset":"49476","stream":"resource.mutation"}}
{"SystemStreamPartition [kafka, resource.mutation, 4]":{"system":"kafka","partition":"4","offset":"2556","stream":"resource.mutation"}}
{"SystemStreamPartition [kafka, resource.mutation, 8]":{"system":"kafka","partition":"8","offset":"62263","stream":"resource.mutation"}}
{"SystemStreamPartition [kafka, resource.mutation, 1]":{"system":"kafka","partition":"1","offset":"52151","stream":"resource.mutation"}}
{"SystemStreamPartition [kafka, resource.mutation, 7]":{"system":"kafka","partition":"7","offset":"58081","stream":"resource.mutation"}}
{"SystemStreamPartition [kafka, resource.mutation, 5]":{"system":"kafka","partition":"5","offset":"47712","stream":"resource.mutation"}}
{"SystemStreamPartition [kafka, resource.mutation, 2]":{"system":"kafka","partition":"2","offset":"45831","stream":"resource.mutation"}}
% Reached end of topic __samza_checkpoint_ver_1_for_resource-normalizer_1 [0] at offset 81713

一分钟后我看到：

{"SystemStreamPartition [kafka, resource.mutation, 6]":{"system":"kafka","partition":"6","offset":"96624","stream":"resource.mutation"}}
{"SystemStreamPartition [kafka, resource.mutation, 3]":{"system":"kafka","partition":"3","offset":"47115","stream":"resource.mutation"}}
{"SystemStreamPartition [kafka, resource.mutation, 0]":{"system":"kafka","partition":"0","offset":"49462","stream":"resource.mutation"}}
{"SystemStreamPartition [kafka, resource.mutation, 4]":{"system":"kafka","partition":"4","offset":"2556","stream":"resource.mutation"}}
{"SystemStreamPartition [kafka, resource.mutation, 8]":{"system":"kafka","partition":"8","offset":"62252","stream":"resource.mutation"}}
{"SystemStreamPartition [kafka, resource.mutation, 1]":{"system":"kafka","partition":"1","offset":"52134","stream":"resource.mutation"}}
{"SystemStreamPartition [kafka, resource.mutation, 7]":{"system":"kafka","partition":"7","offset":"58063","stream":"resource.mutation"}}
{"SystemStreamPartition [kafka, resource.mutation, 5]":{"system":"kafka","partition":"5","offset":"47696","stream":"resource.mutation"}}
{"SystemStreamPartition [kafka, resource.mutation, 2]":{"system":"kafka","partition":"2","offset":"45817","stream":"resource.mutation"}}
% Reached end of topic __samza_checkpoint_ver_1_for_resource-normalizer_1 [0] at offset 81722

数字不会超过2556。但是，看看 resource.mutation 在分区4上，最后一个偏移量的范围与其他偏移量相似，到目前为止大约为61000个偏移量，并且还在增长。
根本没有错误消息或警告消息。它只是停止消耗分区4。