Abhi created KAFKA-8146:
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Summary: WARNING: An illegal reflective access operation has
occurred
Key: KAFKA-8146
URL: https://issues.apache.org/jira/browse/KAFKA-8146
Project: Kafka
Issue Type: Bug
Components: clients, core
Affects Versions: 2.1.1
Environment: Java 11
Kafka v2.1.1
Reporter: Abhi
Hi,
I am running Kafka v2.1.1 and see below warnings at the startup of server and
clients. What is the cause of these warnings and how they can be avoided or
fixed?
*Client side:*
WARNING: Illegal reflective access by
org.apache.kafka.common.network.SaslChannelBuilder
(file:/local/kafka/kafka_installation/kafka_2.12-2.1.1/libs/kafka-clients-2.1.1.jar)
to method sun.security.krb5.Config.getInstance()
WARNING: Please consider reporting this to the maintainers of
org.apache.kafka.common.network.SaslChannelBuilder
WARNING: Use --illegal-access=warn to enable warnings of further illegal
reflective access operations
WARNING: All illegal access operations will be denied in a future release
*Server side:*
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by
org.apache.zookeeper.server.util.KerberosUtil
(file:/local/kafka/kafka_installation/kafka_2.12-2.1.1/libs/zookeeper-3.4.13.jar)
to method sun.security.krb5.Config.getInstance()
WARNING: Please consider reporting this to the maintainers of
org.apache.zookeeper.server.util.KerberosUtil
WARNING: Use --illegal-access=warn to enable warnings of further illegal
reflective access operations
WARNING: All illegal access operations will be denied in a future release
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