[jira] [Created] (KAFKA-7696) kafka-delegation-tokens.sh using a config file that contains security.protocol=SASL_PLAINTEXT throws OutOfMemoryError if it tries to connect to an SSL-enabled secured broker

["Attila Sasvari (JIRA)" <ji...@apache.org>]

Attila Sasvari created KAFKA-7696:
-------------------------------------

             Summary: kafka-delegation-tokens.sh using a config file that contains security.protocol=SASL_PLAINTEXT throws OutOfMemoryError if it tries to connect to an SSL-enabled secured broker
                 Key: KAFKA-7696
                 URL: https://issues.apache.org/jira/browse/KAFKA-7696
             Project: Kafka
          Issue Type: Bug
          Components: tools
    Affects Versions: 2.0.0, 1.1.0
            Reporter: Attila Sasvari


When the command-config file of kafka-delegation-tokens contain security.protocol=SASL_PLAINTEXT instead of SASL_SSL (i.e. due to a user error), the process throws a java.lang.OutOfMemoryError upon connection attempt to a secured (i.e. Kerberized, SSL-enabled) Kafka broker.

{code}
[2018-12-03 11:27:13,221] ERROR Uncaught exception in thread 'kafka-admin-client-thread | adminclient-1': (org.apache.kafka.common.utils.KafkaThread)
java.lang.OutOfMemoryError: Java heap space
	at java.nio.HeapByteBuffer.<init>(HeapByteBuffer.java:57)
	at java.nio.ByteBuffer.allocate(ByteBuffer.java:335)
	at org.apache.kafka.common.memory.MemoryPool$1.tryAllocate(MemoryPool.java:30)
	at org.apache.kafka.common.network.NetworkReceive.readFrom(NetworkReceive.java:112)
	at org.apache.kafka.common.security.authenticator.SaslClientAuthenticator.receiveResponseOrToken(SaslClientAuthenticator.java:407)
	at org.apache.kafka.common.security.authenticator.SaslClientAuthenticator.receiveKafkaResponse(SaslClientAuthenticator.java:497)
	at org.apache.kafka.common.security.authenticator.SaslClientAuthenticator.authenticate(SaslClientAuthenticator.java:207)
	at org.apache.kafka.common.network.KafkaChannel.prepare(KafkaChannel.java:173)
	at org.apache.kafka.common.network.Selector.pollSelectionKeys(Selector.java:533)
	at org.apache.kafka.common.network.Selector.poll(Selector.java:468)
	at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:535)
	at org.apache.kafka.clients.admin.KafkaAdminClient$AdminClientRunnable.run(KafkaAdminClient.java:1125)
	at java.lang.Thread.run(Thread.java:745)
{code}



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