Hi, All I am doing performance test by
bin/kafka-run-class.sh org.apache.kafka.clients.tools.ProducerPerformance test-rep-three 500000000 100 -1 acks=1 bootstrap.servers=10.100.98.100:9092, 10.100.98.101:9092,10.100.98.102:9092 buffer.memory=67108864 batch.size=8196 where the topic test-rep-three is described as follow: bin/kafka-topics.sh --describe --zookeeper 10.100.98.101:2181 --topic test-rep-three Topic:test-rep-three PartitionCount:8 ReplicationFactor:3 Configs: Topic: test-rep-three Partition: 0 Leader: 100 Replicas: 100,102,101 Isr: 102,101,100 Topic: test-rep-three Partition: 1 Leader: 101 Replicas: 101,100,102 Isr: 102,101,100 Topic: test-rep-three Partition: 2 Leader: 102 Replicas: 102,101,100 Isr: 101,102,100 Topic: test-rep-three Partition: 3 Leader: 100 Replicas: 100,101,102 Isr: 101,100,102 Topic: test-rep-three Partition: 4 Leader: 101 Replicas: 101,102,100 Isr: 102,100,101 Topic: test-rep-three Partition: 5 Leader: 102 Replicas: 102,100,101 Isr: 100,102,101 Topic: test-rep-three Partition: 6 Leader: 102 Replicas: 100,102,101 Isr: 102,101,100 Topic: test-rep-three Partition: 7 Leader: 101 Replicas: 101,100,102 Isr: 101,100,102 Apparently, it produces the messages and run for a while, but it periodically have such exceptions: org.apache.kafka.common.errors.NotLeaderForPartitionException: This server is not the leader for that topic-partition. org.apache.kafka.common.errors.NotLeaderForPartitionException: This server is not the leader for that topic-partition. org.apache.kafka.common.errors.NotLeaderForPartitionException: This server is not the leader for that topic-partition. org.apache.kafka.common.errors.NotLeaderForPartitionException: This server is not the leader for that topic-partition. org.apache.kafka.common.errors.NotLeaderForPartitionException: This server is not the leader for that topic-partition. org.apache.kafka.common.errors.NotLeaderForPartitionException: This server is not the leader for that topic-partition. org.apache.kafka.common.errors.NotLeaderForPartitionException: This server is not the leader for that topic-partition. org.apache.kafka.common.errors.NotLeaderForPartitionException: This server is not the leader for that topic-partition. org.apache.kafka.common.errors.NotLeaderForPartitionException: This server is not the leader for that topic-partition. org.apache.kafka.common.errors.NotLeaderForPartitionException: This server is not the leader for that topic-partition. org.apache.kafka.common.errors.NotLeaderForPartitionException: This server is not the leader for that topic-partition. 141292 records sent, 28258.4 records/sec (80.85 MB/sec), 551.2 ms avg latency, 1494.0 max latency. 142526 records sent, 28505.2 records/sec (81.55 MB/sec), 580.8 ms avg latency, 1513.0 max latency. 146564 records sent, 29312.8 records/sec (83.86 MB/sec), 557.9 ms avg latency, 1431.0 max latency. 146755 records sent, 29351.0 records/sec (83.97 MB/sec), 556.7 ms avg latency, 1480.0 max latency. 147963 records sent, 29592.6 records/sec (84.67 MB/sec), 556.7 ms avg latency, 1546.0 max latency. 146931 records sent, 29386.2 records/sec (84.07 MB/sec), 550.9 ms avg latency, 1715.0 max latency. 146947 records sent, 29389.4 records/sec (84.08 MB/sec), 555.1 ms avg latency, 1750.0 max latency. 146422 records sent, 29284.4 records/sec (83.78 MB/sec), 557.9 ms avg latency, 1818.0 max latency. 147516 records sent, 29503.2 records/sec (84.41 MB/sec), 555.6 ms avg latency, 1806.0 max latency. 147877 records sent, 29575.4 records/sec (84.62 MB/sec), 552.1 ms avg latency, 1821.0 max latency. 147201 records sent, 29440.2 records/sec (84.23 MB/sec), 554.5 ms avg latency, 1826.0 max latency. 148317 records sent, 29663.4 records/sec (84.87 MB/sec), 558.1 ms avg latency, 1792.0 max latency. 147756 records sent, 29551.2 records/sec (84.55 MB/sec), 550.9 ms avg latency, 1806.0 max latency then back into correct process state, is that because rebalance? thanks -- Alec Li