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https://issues.apache.org/jira/browse/FLINK-17436?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17094982#comment-17094982
]
Wei Zhong commented on FLINK-17436:
-----------------------------------
Hi [~chesnay] I have updated the description. The IllegalAccessError is thrown
because though the `PythonProgramOptions` has the same package name with
`CliFrontendParser`, they are loaded by different class loader, which are
recognized as different package. So the `PythonProgramOptions` can not access
the package-private content of `CliFrontendParser` in actual usage i.e "flink
run".
> When submitting Python job via "flink run" a IllegalAccessError will be
> raised due to the package's private access control
> --------------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-17436
> URL: https://issues.apache.org/jira/browse/FLINK-17436
> Project: Flink
> Issue Type: Bug
> Components: API / Python
> Affects Versions: 1.11.0
> Reporter: Wei Zhong
> Assignee: Wei Zhong
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.11.0
>
>
> Currently when submitting Python job via "flink run" a IllegalAccessError
> will be raised due to the package's private access control. We should fix
> this issue.
> This issue Error can be simply reproduced by such a command:
> {code:java}
> ./flink run -c org.apache.flink.client.python.PythonGatewayServer
> ../opt/flink-python_2.11-1.11-SNAPSHOT.jar
> {code}
> The error can be found in the client log file:
> {code:java}
> org.apache.flink.client.cli.CliArgsException: Python command line option
> detected but the flink-python module seems to be missing or not working as
> expected.
> at
> org.apache.flink.client.cli.ProgramOptionsUtils.createPythonProgramOptions(ProgramOptionsUtils.java:91)
> ~[flink-dist_2.11-1.11-SNAPSHOT.jar:1.11-SNAPSHOT]
> at
> org.apache.flink.client.cli.ProgramOptions.create(ProgramOptions.java:185)
> ~[flink-dist_2.11-1.11-SNAPSHOT.jar:1.11-SNAPSHOT]
> at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:179)
> ~[flink-dist_2.11-1.11-SNAPSHOT.jar:1.11-SNAPSHOT]
> at
> org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:868)
> ~[flink-dist_2.11-1.11-SNAPSHOT.jar:1.11-SNAPSHOT]
> at
> org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:941)
> ~[flink-dist_2.11-1.11-SNAPSHOT.jar:1.11-SNAPSHOT]
> at
> org.apache.flink.runtime.security.contexts.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)
> [flink-dist_2.11-1.11-SNAPSHOT.jar:1.11-SNAPSHOT]
> at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:941)
> [flink-dist_2.11-1.11-SNAPSHOT.jar:1.11-SNAPSHOT]
> Caused by: java.lang.reflect.InvocationTargetException
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method) ~[?:1.8.0_172]
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> ~[?:1.8.0_172]
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> ~[?:1.8.0_172]
> at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> ~[?:1.8.0_172]
> at
> org.apache.flink.client.cli.ProgramOptionsUtils.createPythonProgramOptions(ProgramOptionsUtils.java:85)
> ~[flink-dist_2.11-1.11-SNAPSHOT.jar:1.11-SNAPSHOT]
> ... 6 more
> Caused by: java.lang.IllegalAccessError: tried to access field
> org.apache.flink.client.cli.CliFrontendParser.ARGS_OPTION from class
> org.apache.flink.client.cli.PythonProgramOptions
> at
> org.apache.flink.client.cli.PythonProgramOptions.extractProgramArgs(PythonProgramOptions.java:61)
> ~[?:?]
> at
> org.apache.flink.client.cli.ProgramOptions.<init>(ProgramOptions.java:79)
> ~[flink-dist_2.11-1.11-SNAPSHOT.jar:1.11-SNAPSHOT]
> at
> org.apache.flink.client.cli.PythonProgramOptions.<init>(PythonProgramOptions.java:47)
> ~[?:?]
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method) ~[?:1.8.0_172]
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> ~[?:1.8.0_172]
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> ~[?:1.8.0_172]
> at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> ~[?:1.8.0_172]
> at
> org.apache.flink.client.cli.ProgramOptionsUtils.createPythonProgramOptions(ProgramOptionsUtils.java:85)
> ~[flink-dist_2.11-1.11-SNAPSHOT.jar:1.11-SNAPSHOT]
> ... 6 more
> {code}
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