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https://issues.apache.org/jira/browse/BEAM-6096?focusedWorklogId=167615&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-167615
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ASF GitHub Bot logged work on BEAM-6096:
----------------------------------------
Author: ASF GitHub Bot
Created on: 20/Nov/18 04:03
Start Date: 20/Nov/18 04:03
Worklog Time Spent: 10m
Work Description: cushon opened a new pull request #7085: [BEAM-6096]
illegal signature attribute when compiling with JDK 11
URL: https://github.com/apache/beam/pull/7085
This change fixes a compilation error with JDK 11:
```
error: error while generating class <anonymous
org.apache.beam.fn.harness.WindowMergingFnRunner$MergingViaWindowFnRunner$1>
(illegal signature attribute for type CAP#1)
where CAP#1 is a fresh type-variable:
CAP#1 extends Object from capture of ?
```
The code was previously accepted by javac due to a bug, which has been fixed
in JDK 11: https://bugs.openjdk.java.net/browse/JDK-8203436
------------------------
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Post-Commit Tests Status (on master branch)
------------------------------------------------------------------------------------------------
Lang | SDK | Apex | Dataflow | Flink | Gearpump | Samza | Spark
--- | --- | --- | --- | --- | --- | --- | ---
Go | [](https://builds.apache.org/job/beam_PostCommit_Go_GradleBuild/lastCompletedBuild/)
| --- | --- | --- | --- | --- | ---
Java | [](https://builds.apache.org/job/beam_PostCommit_Java_GradleBuild/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Apex_Gradle/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Gradle/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink_Gradle/lastCompletedBuild/)
[](https://builds.apache.org/job/beam_PostCommit_Java_PVR_Flink/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Gearpump_Gradle/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Samza_Gradle/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Spark_Gradle/lastCompletedBuild/)
Python | [](https://builds.apache.org/job/beam_PostCommit_Python_Verify/lastCompletedBuild/)
| --- | [](https://builds.apache.org/job/beam_PostCommit_Py_VR_Dataflow/lastCompletedBuild/)
</br> [](https://builds.apache.org/job/beam_PostCommit_Py_ValCont/lastCompletedBuild/)
| [](https://builds.apache.org/job/beam_PostCommit_Python_VR_Flink/lastCompletedBuild/)
| --- | --- | ---
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Issue Time Tracking
-------------------
Worklog Id: (was: 167615)
Time Spent: 10m
Remaining Estimate: 0h
> illegal signature attribute when compiling with JDK 11
> ------------------------------------------------------
>
> Key: BEAM-6096
> URL: https://issues.apache.org/jira/browse/BEAM-6096
> Project: Beam
> Issue Type: Bug
> Components: beam-model
> Reporter: Liam Miller-Cushon
> Assignee: Kenneth Knowles
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The following code is invalid, and fails to compile with the JDK 11 javac:
> https://github.com/apache/beam/blob/1cbbc4d8755130f137e7d9ef4813e8d3b917cb70/sdks/java/harness/src/main/java/org/apache/beam/fn/harness/WindowMergingFnRunner.java#L132-L144
> The error is:
> ```
> error: error while generating class <anonymous
> org.apache.beam.fn.harness.WindowMergingFnRunner$MergingViaWindowFnRunner$1>
> (illegal signature attribute for type CAP#1)
> where CAP#1 is a fresh type-variable:
> CAP#1 extends Object from capture of ?
> ```
> The code was previously accepted by javac due to a bug, which has been fixed
> in JDK 11: https://bugs.openjdk.java.net/browse/JDK-8203436
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