[KAFKA-2807] Movement of throughput throttler to common broke upgrade tests

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 0.9.0.0
• Assignee: Ewen Cheslack-Postava
• Reporter: Geoff Anderson
• Reviewer: Gwen Shapira
• Created: 11/Nov/15 07:11
• Updated: 24/Feb/23 23:24
• Resolved: 12/Nov/15 19:13

Description

In order to run compatibility tests with an 0.8.2 producer, and using VerifiableProducer, we use the 0.8.2 kafka-run-tools.sh classpath augmented by the 0.9.0 tools and tools dependencies classpaths.

Recently, some refactoring efforts moved ThroughputThrottler to org.apache.kafka.common.utils package, but this breaks the existing compatibility tests:

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/kafka/common/utils/ThroughputThrottler
        at org.apache.kafka.tools.VerifiableProducer.main(VerifiableProducer.java:334)
Caused by: java.lang.ClassNotFoundException: org.apache.kafka.common.utils.ThroughputThrottler
        at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
        ... 1 more

Given the need to be able to run VerifiableProducer against 0.8.X, I'm not sure VerifiableProducer can depend on org.apache.kafka.common.utils at this point in time.

Issue Links

• is related to: KAFKA-14760 Move ThroughputThrottler, break connect-runtime dependency on tools