Chhida opened a new pull request, #22482:
URL: https://github.com/apache/kafka/pull/22482
Use ConcurrentHashMap to cache parsed KafkaPrincipal objects per unique
principal string, reducing allocation overhead from repeated
substring/constructor calls during ACL authorization.
Reviewers: TBD
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`(data-plane-kafka-request-handler-0" #80 daemon prio=5 os_prio=0
cpu=17207014.77ms elapsed=18143.19s tid=0x00007f76d50aa800 nid=0x8e7bb runnable
[0x00007f7681480000]
java.lang.Thread.State: RUNNABLE
at
org.apache.kafka.metadata.authorizer.StandardAcl.kafkaPrincipal(StandardAcl.java:106)
at
org.apache.kafka.metadata.authorizer.StandardAuthorizerData.findResult(StandardAuthorizerData.java:493)
at
org.apache.kafka.metadata.authorizer.StandardAuthorizerData.checkSection(StandardAuthorizerData.java:428)
at
org.apache.kafka.metadata.authorizer.StandardAuthorizerData.findAclRule(StandardAuthorizerData.java:367)
at
org.apache.kafka.metadata.authorizer.StandardAuthorizerData.authorize(StandardAuthorizerData.java:247)
at
org.apache.kafka.metadata.authorizer.StandardAuthorizer.authorize(StandardAuthorizer.java:143)
at kafka.server.AuthHelper.filterByAuthorized(AuthHelper.scala:113)
at
kafka.server.KafkaApis.handleTopicMetadataRequest(KafkaApis.scala:1350)
at kafka.server.KafkaApis.handle(KafkaApis.scala:192)
at kafka.server.KafkaRequestHandler.run(KafkaRequestHandler.scala:159)
at java.lang.Thread.run([email protected]/Thread.java:829)
)`
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