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https://issues.apache.org/jira/browse/FLINK-17524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17099829#comment-17099829
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Robert Metzger commented on FLINK-17524:
----------------------------------------
Another one happening on current master:
{code}
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by
org.apache.flink.shaded.akka.org.jboss.netty.util.internal.ByteBufferUtil
(file:/private/tmp/flink/flink-dist/target/flink-1.11-SNAPSHOT-bin/flink-1.11-SNAPSHOT/lib/flink-dist_2.11-1.11-SNAPSHOT.jar)
to method java.nio.DirectByteBuffer.cleaner()
WARNING: Please consider reporting this to the maintainers of
org.apache.flink.shaded.akka.org.jboss.netty.util.internal.ByteBufferUtil
WARNING: Use --illegal-access=warn to enable warnings of further illegal
reflective access operations
WARNING: All illegal access operations will be denied in a future release
{code}
> Remove "An illegal reflective access operation has occurred" warnings on JDK11
> ------------------------------------------------------------------------------
>
> Key: FLINK-17524
> URL: https://issues.apache.org/jira/browse/FLINK-17524
> Project: Flink
> Issue Type: Task
> Affects Versions: 1.11.0
> Reporter: Robert Metzger
> Priority: Major
>
> When running Flink on JDK11, there are various warnings like this one:
> {code}
> WARNING: An illegal reflective access operation has occurred
> WARNING: Illegal reflective access by
> org.apache.flink.api.java.ClosureCleaner
> (file:/private/tmp/flink/flink-dist/target/flink-1.11-SNAPSHOT-bin/flink-1.11-SNAPSHOT/lib/flink-dist_2.11-1.11-SNAPSHOT.jar)
> to field java.lang.String.value
> WARNING: Please consider reporting this to the maintainers of
> org.apache.flink.api.java.ClosureCleaner
> WARNING: Use --illegal-access=warn to enable warnings of further illegal
> reflective access operations
> WARNING: All illegal access operations will be denied in a future release
> {code}
> This is an umbrella issue to collect all cases of such warnings. We will
> create separate tickets for each affected class / module / component.
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