Takafumi Saito created KAFKA-5789:
-------------------------------------

             Summary: Deleted topic is recreated when consumer subscribe the 
deleted one
                 Key: KAFKA-5789
                 URL: https://issues.apache.org/jira/browse/KAFKA-5789
             Project: Kafka
          Issue Type: Bug
          Components: clients
    Affects Versions: 0.11.0.0
            Reporter: Takafumi Saito


When setting auto.create.topic.enbale true in broker, some deleted topics will 
be re-created.
Because when consumer that subscribe deleted topic is exist, broker will create 
topic having same name.
It is not necessary that consumers trigger new topic creation , so auto topic 
creation in consumer should be disabled.

I attatch the log outputted in our broker.
This show that a topic (topic_1) was deleted at 12:02:24,672, but same topic 
was created shortly thereafter:

{code:java}
[2017-08-22 12:02:24,666] INFO [ReplicaFetcherManager on broker 1] Removed 
fetcher for partitions topic_1-0 (kafka.server.ReplicaFetcherManager)
[2017-08-22 12:02:24,666] INFO [ReplicaFetcherManager on broker 1] Removed 
fetcher for partitions  (kafka.server.ReplicaFetcherManager)
[2017-08-22 12:02:24,667] INFO [ReplicaFetcherManager on broker 1] Removed 
fetcher for partitions topic_1-0 (kafka.server.ReplicaFetcherManager)
[2017-08-22 12:02:24,672] INFO Log for partition topic_1-0 is renamed to 
/data/topic_1-0.ad490e8326704ae6a6fd9f6399c29614-delete and is scheduled for 
deletion (kafka.log.LogManager)
[2017-08-22 12:02:24,736] INFO Loading producer state from offset 0 for 
partition topic_1-0 with message format version 2 (kafka.log.Log)
[2017-08-22 12:02:24,736] INFO Completed load of log topic_1-0 with 1 log 
segments, log start offset 0 and log end offset 0 in 1 ms (kafka.log.Log)
[2017-08-22 12:02:24,737] INFO Created log for partition [topic_1,0] in /data 
with properties {compression.type -> producer, message.format.version -> 
0.11.0-IV2, file.delete.delay.ms -> 60000,
max.message.bytes -> 1000012, min.compaction.lag.ms -> 0, 
message.timestamp.type -> CreateTime, min.insync.replicas -> 1, 
segment.jitter.ms -> 0, preallocate -> false, min.cleanable.dirty.ratio -> 0.5, 
i
ndex.interval.bytes -> 4096, unclean.leader.election.enable -> false, 
retention.bytes -> -1, delete.retention.ms -> 86400000, cleanup.policy -> 
[delete], flush.ms -> 9223372036854775807, segment.ms -> 60
4800000, segment.bytes -> 1073741824, retention.ms -> 86400000, 
message.timestamp.difference.max.ms -> 9223372036854775807, segment.index.bytes 
-> 10485760, flush.messages -> 9223372036854775807}. (kafka
.log.LogManager)
[2017-08-22 12:02:24,738] INFO [ReplicaFetcherManager on broker 1] Removed 
fetcher for partitions topic_1-0 (kafka.server.ReplicaFetcherManager)
[2017-08-22 12:02:24,738] INFO [ReplicaFetcherManager on broker 1] Added 
fetcher for partitions List([topic_1-0, initOffset 0 to broker 
BrokerEndPoint(2,sbx-patriot-kafka02.amb-patriot.incvb.io,
9092)] ) (kafka.server.ReplicaFetcherManager)
[2017-08-22 12:02:25,200] INFO [ReplicaFetcherThread-0-2]: Based on follower's 
leader epoch, leader replied with an offset 0 >= the follower's log end offset 
0 in topic_1-0. No truncation needed
. (kafka.server.ReplicaFetcherThread)
[2017-08-22 12:02:25,200] INFO Truncating topic_1-0 to 0 has no effect as the 
largest offset in the log is -1. (kafka.log.Log)
{code}




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