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Posted to issues@flink.apache.org by "Matt (JIRA)" <ji...@apache.org> on 2017/05/29 22:23:04 UTC
[jira] [Updated] (FLINK-6767) Cannot load user class on local
environment
[ https://issues.apache.org/jira/browse/FLINK-6767?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Matt updated FLINK-6767:
------------------------
Description:
This bug was discussed in [1], and a fix was proposed in [2].
In summary the fix requires replacing line 298 in BlobLibraryCacheManager.java [3] for:
{code:java}
this.classLoader = new FlinkUserCodeClassLoader(libraryURLs, Thread.currentThread().getContextClassLoader());
{code}
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:
{code}
org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot load user class: com.test.Source
ClassLoader info: URL ClassLoader:
Class not resolvable through given classloader.
{code}
[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
was:
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:
{code:java}
this.classLoader = new FlinkUserCodeClassLoader(libraryURLs, Thread.currentThread().getContextClassLoader());
{code}
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:
{code}
org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot load user class: com.test.Source
ClassLoader info: URL ClassLoader:
Class not resolvable through given classloader.
{code}
[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
> 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
> Labels: CollocatedComputation, Flink, Ignite, LocalEvironment
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> This bug was discussed in [1], and a fix was proposed in [2].
> In summary the fix requires replacing line 298 in BlobLibraryCacheManager.java [3] for:
> {code:java}
> this.classLoader = new FlinkUserCodeClassLoader(libraryURLs, Thread.currentThread().getContextClassLoader());
> {code}
> 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:
> {code}
> org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot load user class: com.test.Source
> ClassLoader info: URL ClassLoader:
> Class not resolvable through given classloader.
> {code}
> [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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