Josh England created FLINK-35554:
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Summary: usrlib is not added to classpath when using containers
Key: FLINK-35554
URL: https://issues.apache.org/jira/browse/FLINK-35554
Project: Flink
Issue Type: Bug
Components: flink-docker
Affects Versions: 1.19.0
Environment: Docker
Reporter: Josh England
We use flink-docker to create a "standalone" application, with a Dockerfile
like...
{code:java}
FROM flink:1.18.1-java17
COPY application.jar /opt/flink/usrlib/artifacts/
{code}
However, after upgrading to 1.19.0 we found our application would not start. We
saw errors like the following in the logs:
{noformat}
org.apache.flink.util.FlinkException: Could not load the provided entrypoint
class.
at
org.apache.flink.client.program.DefaultPackagedProgramRetriever.getPackagedProgram(DefaultPackagedProgramRetriever.java:230)
at
org.apache.flink.container.entrypoint.StandaloneApplicationClusterEntryPoint.getPackagedProgram(StandaloneApplicationClusterEntryPoint.java:149)
at
org.apache.flink.container.entrypoint.StandaloneApplicationClusterEntryPoint.lambda$main$0(StandaloneApplicationClusterEntryPoint.java:90)
at
org.apache.flink.runtime.security.contexts.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:28)
at
org.apache.flink.container.entrypoint.StandaloneApplicationClusterEntryPoint.main(StandaloneApplicationClusterEntryPoint.java:89)
Caused by: org.apache.flink.client.program.ProgramInvocationException: The
program's entry point class 'XXXXXXXXX' was not found in the jar file.
{noformat}
We were able to fix the issue by placing the application.jar in /opt/flink/lib
instead. My guess is that the usrlib directory isn't being added to the
classpath by the shell scripts that launch flink from a container.
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