[jira] [Created] (KAFKA-12308) ConfigDef.parseType deadlock

[cosmozhu (Jira)]

cosmozhu created KAFKA-12308:
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             Summary: ConfigDef.parseType deadlock
                 Key: KAFKA-12308
                 URL: https://issues.apache.org/jira/browse/KAFKA-12308
             Project: Kafka
          Issue Type: Bug
          Components: config
    Affects Versions: 2.5.0
         Environment: kafka 2.5.0
centos7
java version "1.8.0_231"
            Reporter: cosmozhu
         Attachments: deadlock.log

hi,
 the problem was found, when I restarted *ConnectDistributed*

I restart ConnectDistributed in the single node for the test, with not delete 
connectors.
 sometimes the process stopped when creating connectors.

I add some logger and found it had a deadlock in `ConfigDef.parseType`.My 
connectors always have the same transforms. I guess when connector startup (in 
startAndStopExecutor which default 8 threads) and load the same class file it 
has something wrong.

I attached the jstack log file.

thanks for any help.



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