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From "saichand (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (KAFKA-5778) Kafka cluster is not responding when one broker hangs and resulted in too many connections in close_wait in other brokers
Date Fri, 13 Oct 2017 06:17:00 GMT

     [ https://issues.apache.org/jira/browse/KAFKA-5778?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

saichand updated KAFKA-5778:
----------------------------
    Priority: Critical  (was: Blocker)

> Kafka cluster is not responding when one broker hangs and resulted in too many connections
in close_wait in other brokers
> -------------------------------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-5778
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5778
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 0.10.0.1
>            Reporter: saichand
>            Priority: Critical
>
> In a cluster of 3 brokers , one of the broker(Broker-1 ) is hanged and from then other
two brokers has connections in close_wait for java client producer/consumer and also even
some broker to broker connections are in close wait among those two brokers.
> Kafka Version : 0.10.0.1
> In logs I found replica fetcher thread connection refused exceptions:
> In broker 0 : replica fetcher 0-1, replica fetcher 0-2
> In broker 2 : replica fetcher 0-0, replica fetcher 0-1
> In broker 1 : It was hung no logs were available at that time.
> We tried restarting broker- 2 kafka and then it was not successful as it terminated saying
zookeeper timeout 
> then we tried restarting broker- 0 kafka and we got the same error
> Broker -1 was hang so , we could not login even into it
> so we restarted broker -1 machine
> then we restarted all zookepers and then kafka brokers now everything is fine 



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