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From "Matt (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-6767) Cannot load user class on local environment
Date Mon, 29 May 2017 22:23:04 GMT
Matt created FLINK-6767:

             Summary: Cannot load user class on local environment
                 Key: FLINK-6767
                 URL: https://issues.apache.org/jira/browse/FLINK-6767
             Project: Flink
          Issue Type: Bug
          Components: Local Runtime
    Affects Versions: 1.2.1
         Environment: Flink 1.2.1 running on local environment on a Ignite 2.0 node.
            Reporter: Matt
            Priority: Critical

This bug was discussed in [1], and a fix was proposed in [2]. In summary the fix requires
line 298 in BlobLibraryCacheManager.java [3] for:

this.classLoader = new FlinkUserCodeClassLoader(libraryURLs, Thread.currentThread().getContextClassLoader());

A repository with a complete test case reproducing the error is found in [4]. The readme file
contains details on how to run it and the resulting exception:

org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot load user class: com.test.Source
ClassLoader info: URL ClassLoader:
Class not resolvable through given classloader.

[1] http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/BUG-Cannot-Load-User-Class-on-Local-Environment-td12799.html

[2] http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/BUG-Cannot-Load-User-Class-on-Local-Environment-tp12799p13376.html

[3] https://github.com/apache/flink/blob/release-1.2/flink-runtime/src/main/java/org/apache/flink/runtime/execution/librarycache/BlobLibraryCacheManager.java#L298

[4] https://github.com/Dromit/FlinkTest

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