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lqjacklee edited comment on KAFKA-10824 at 12/9/20, 1:50 AM: ------------------------------------------------------------- [~mohammadabboud] I can infer based on * If 'closeMode' is `CloseMode.GRACEFUL`, the channel is disconnected here, but outstanding receives * are processed. The channel is closed when there are no outstanding receives or if a send is * requested. For other values of `closeMode`, outstanding receives are discarded and the channel * is closed immediately. But I think the channel status is not related with consumer_offsets. Please check the log for additional information. was (Author: jack-lee): [~mohammadabboud] I can infer based on * If 'closeMode' is `CloseMode.GRACEFUL`, the channel is disconnected here, but outstanding receives * are processed. The channel is closed when there are no outstanding receives or if a send is * requested. For other values of `closeMode`, outstanding receives are discarded and the channel * is closed immediately. But I think the channel status is not related with consumer_offsets. > Connection to node -1 could not be established. Broker may not be available. > ---------------------------------------------------------------------------- > > Key: KAFKA-10824 > URL: https://issues.apache.org/jira/browse/KAFKA-10824 > Project: Kafka > Issue Type: Bug > Components: consumer, KafkaConnect, network, offset manager > Affects Versions: 2.0.0, 2.1.1 > Reporter: Mohammad Abboud > Assignee: lqjacklee > Priority: Blocker > > After a specific running time, the consumer groups will become inactive, > while trying to reset the offsets, I get the message "*Connection to node -1 > could not be established. Broker may not be available. > (org.apache.kafka.clients.NetworkClient)*". > My work around is to delete all the *consumer_offsets* folders and restart > the server. > below is the content of server.properties: > listeners=PLAINTEXT://0.0.0.0:9092 > advertised.listeners=PLAINTEXT://Server01:9092 -- This message was sent by Atlassian Jira (v8.3.4#803005)