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https://issues.apache.org/jira/browse/BEAM-11418?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17343605#comment-17343605
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Daniel Oliveira commented on BEAM-11418:
----------------------------------------
Fixed for Dataflow.
> [Go XLang] ClassNotFoundException due to incorrect artifact staging to x-lang
> environment.
> ------------------------------------------------------------------------------------------
>
> Key: BEAM-11418
> URL: https://issues.apache.org/jira/browse/BEAM-11418
> Project: Beam
> Issue Type: Bug
> Components: cross-language, sdk-go
> Reporter: Daniel Oliveira
> Assignee: Daniel Oliveira
> Priority: P2
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> Some of the test XLang transforms (CoGroupByKey, MultiInputOutput, and
> Partition) fail on the Go SDK (using the Java Test Expansion Service). These
> tests used to pass and started failing at some point for unknown reasons.
> The failures tend to involve a ClassNotFound exception, like so:
> {noformat}
> RuntimeError: java.lang.IllegalArgumentException: unable to deserialize
> Custom DoFn With Execution Info
> at
> org.apache.beam.sdk.util.SerializableUtils.deserializeFromByteArray(SerializableUtils.java:78)
> at
> org.apache.beam.runners.core.construction.ParDoTranslation.doFnWithExecutionInformationFromProto(ParDoTranslation.java:712)
> at
> org.apache.beam.runners.core.construction.ParDoTranslation.getDoFn(ParDoTranslation.java:363)
> at
> org.apache.beam.fn.harness.FnApiDoFnRunner.<init>(FnApiDoFnRunner.java:351)
> at
> org.apache.beam.fn.harness.FnApiDoFnRunner$Factory.createRunnerForPTransform(FnApiDoFnRunner.java:183)
> at
> org.apache.beam.fn.harness.FnApiDoFnRunner$Factory.createRunnerForPTransform(FnApiDoFnRunner.java:157)
> {...}
> Caused by: java.lang.ClassNotFoundException:
> org.apache.beam.sdk.testing.expansion.TestExpansionService$TestTransformRegistrar$PartitionBuilder
> at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> at java.lang.Class.forName0(Native Method)
> {...}
> {noformat}
> Edit: This seems to be due to artifact staging issues. This bug has been
> re-titled to be more accurate to the root cause.
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