tu nguyen khac created KAFKA-4027:
-------------------------------------

             Summary: Leader for a cetain partition unavailable forever
                 Key: KAFKA-4027
                 URL: https://issues.apache.org/jira/browse/KAFKA-4027
             Project: Kafka
          Issue Type: Bug
          Components: core
    Affects Versions: 0.10.0.0
            Reporter: tu nguyen khac


I have a cluster of brokers ( 9 box) , i 'm naming it from 0 --> 8 . 
Yesterday some servers went down ( hard reset ) i regularly restart these 
server ( down servers ) but after that some topics cannot assign leader 
i checked server log and retrieved these logging : 

kafka.common.NotAssignedReplicaException: Leader 1 failed to record follower 
6's position -1 since the replica is not recognized to be one of the assigned 
replicas 1 for partition [tos_htv3tv.com,31].
        at 
kafka.cluster.Partition.updateReplicaLogReadResult(Partition.scala:251)
        at 
kafka.server.ReplicaManager$$anonfun$updateFollowerLogReadResults$2.apply(ReplicaManager.scala:864)
        at 
kafka.server.ReplicaManager$$anonfun$updateFollowerLogReadResults$2.apply(ReplicaManager.scala:861)
        at 
scala.collection.immutable.HashMap$HashMap1.foreach(HashMap.scala:221)
        at 
scala.collection.immutable.HashMap$HashTrieMap.foreach(HashMap.scala:428)
        at 
kafka.server.ReplicaManager.updateFollowerLogReadResults(ReplicaManager.scala:861)
        at kafka.server.ReplicaManager.fetchMessages(ReplicaManager.scala:470)
        at kafka.server.KafkaApis.handleFetchRequest(KafkaApis.scala:496)
        at kafka.server.KafkaApis.handle(KafkaApis.scala:77)
        at kafka.server.KafkaRequestHandler.run(KafkaRequestHandler.scala:60)
        at java.lang.Thread.run(Thread.java:745)
i tried to run Prefered Leader but it didn't work ( some partitions has node 
leader ) :(




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