[jira] [Commented] (FLINK-31965) Fix ClassNotFoundException in benchmarks

["Yanfei Lei (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-31965?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17717571#comment-17717571 ] 

Yanfei Lei commented on FLINK-31965:
------------------------------------

Have you tried running it with the exec command?
{code:java}
mvn clean package exec:exec \
 -Dbenchmarks="org.apache.flink.state.benchmark.*" {code}

> Fix ClassNotFoundException in benchmarks
> ----------------------------------------
>
>                 Key: FLINK-31965
>                 URL: https://issues.apache.org/jira/browse/FLINK-31965
>             Project: Flink
>          Issue Type: Bug
>          Components: Benchmarks
>    Affects Versions: 1.18.0
>            Reporter: Paul Lin
>            Priority: Major
>              Labels: pull-request-available
>
> The benchmarks rely on the test jar of `flink-streaming-java`. However, the jar is set to test scope, thus not included in the packaged jar. Therefore ClassNotFoundException occurs while running the benchmarks with `java --jar xxx` command.
> ```
> java.lang.NoClassDefFoundError: org/apache/flink/streaming/util/KeyedOneInputStreamOperatorTestHarness
>     at org.apache.flink.contrib.streaming.state.benchmark.RescalingBenchmark.prepareState(RescalingBenchmark.java:111)
>     at org.apache.flink.contrib.streaming.state.benchmark.RescalingBenchmark.setUp(RescalingBenchmark.java:78)
>     at org.apache.flink.state.benchmark.RocksdbStateBackendRescalingBenchmarkExecutor.setUp(RocksdbStateBackendRescalingBenchmarkExecutor.java:66)
>     at org.apache.flink.state.benchmark.generated.RocksdbStateBackendRescalingBenchmarkExecutor_rescaleRocksDB_jmhTest._jmh_tryInit_f_rocksdbstatebackendrescalingbenchmarkexecutor0_0(RocksdbStateBackendRescalingBenchmarkExecutor_rescaleRocksDB_jmhTest.java:370)
>     at org.apache.flink.state.benchmark.generated.RocksdbStateBackendRescalingBenchmarkExecutor_rescaleRocksDB_jmhTest.rescaleRocksDB_AverageTime(RocksdbStateBackendRescalingBenchmarkExecutor_rescaleRocksDB_jmhTest.java:147)
>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>     at java.lang.reflect.Method.invoke(Method.java:498)
>     at org.openjdk.jmh.runner.BenchmarkHandler$BenchmarkTask.call(BenchmarkHandler.java:453)
>     at org.openjdk.jmh.runner.BenchmarkHandler$BenchmarkTask.call(BenchmarkHandler.java:437)
>     at java.util.concurrent.FutureTask.run(FutureTask.java:266)
>     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>     at java.util.concurrent.FutureTask.run(FutureTask.java:266)
>     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>     at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.ClassNotFoundException: org.apache.flink.streaming.util.KeyedOneInputStreamOperatorTestHarness
>     at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
>     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
>     ... 17 more
> ```



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