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一、背景

• kafka topic保存的数据少，topic只能保存最新的数据

二、定位排查方向

• 能想到的定位排查方向：topic能存储的数据量、topic数据保存的时间、topic数据大小

./bin/kafka-configs.sh --zookeeper localhost:2181 --entity-type topics --entity-name optics_rt --describe

Topic: optics_rt TopicId: W37WLzYSRe6pwgYMOprw8w PartitionCount: 6 ReplicationFactor: 3 Configs: retention.bytes=5368709120
Topic: optics_rt Partition: 0 Leader: 2 Replicas: 2,4,3 Isr: 2,3,4
Topic: optics_rt Partition: 1 Leader: 3 Replicas: 3,2,0 Isr: 0,2,3
Topic: optics_rt Partition: 2 Leader: 0 Replicas: 0,3,5 Isr: 0,3,5
Topic: optics_rt Partition: 3 Leader: 5 Replicas: 5,0,1 Isr: 0,1,5
Topic: optics_rt Partition: 4 Leader: 1 R