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From "Dustin Cote (JIRA)" <j...@apache.org>
Subject [jira] [Created] (KAFKA-5118) Improve message for Kafka failed startup with non-Kafka data in data.dirs
Date Mon, 24 Apr 2017 19:51:04 GMT
Dustin Cote created KAFKA-5118:
----------------------------------

             Summary: Improve message for Kafka failed startup with non-Kafka data in data.dirs
                 Key: KAFKA-5118
                 URL: https://issues.apache.org/jira/browse/KAFKA-5118
             Project: Kafka
          Issue Type: Improvement
          Components: core
    Affects Versions: 0.10.2.0
            Reporter: Dustin Cote
            Priority: Minor


Today, if you try to startup a broker with some non-Kafka data in the data.dirs you end up
with a cryptic message:
{code}
[2017-04-21 13:35:08,122] ERROR There was an error in one of the threads during logs loading:
java.lang.StringIndexOutOfBoundsException: String index out of range: -1 (kafka.log.LogManager)

[2017-04-21 13:35:08,124] FATAL [Kafka Server 3], Fatal error during KafkaServer startup.
Prepare to shutdown (kafka.server.KafkaServer) 
java.lang.StringIndexOutOfBoundsException: String index out of range: -1 
{code}

It'd be better if we could tell the user to look for non-Kafka data in the data.dirs and print
out the offending directory that caused the problem in the first place.



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