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https://issues.apache.org/jira/browse/BEAM-11837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17299919#comment-17299919
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Kyle Weaver commented on BEAM-11837:
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Looks like these warnings are coming from the checker framework:
https://github.com/typetools/checker-framework/blob/3a77a2d10760a6e13486603e35d5d27b22747291/framework/src/main/java/org/checkerframework/framework/source/SourceChecker.java#L945
Probably caused by the nullness checks, which are known to be expensive.
> Github actions flaking: "Memory constraints are impeding performance"
> ---------------------------------------------------------------------
>
> Key: BEAM-11837
> URL: https://issues.apache.org/jira/browse/BEAM-11837
> Project: Beam
> Issue Type: Bug
> Components: test-failures
> Reporter: Kyle Weaver
> Priority: P2
>
> Java Wordcount Direct Runner (ubuntu-latest) failed a couple times on me with
> the following warning/error. It doesn't seem like "impeding performance"
> should cause the build to fail altogether, so I'm wondering if there's some
> way we can silence this warning.
> > Task :sdks:java:extensions:protobuf:compileJava
> warning: Memory constraints are impeding performance; please increase max
> heap size.
> ...
> > Task :sdks:java:extensions:protobuf:compileJava
> error: warnings found and -Werror specified
> Note: Some input files use or override a deprecated API.
> Note: Recompile with -Xlint:deprecation for details.
> Note: Some input files use unchecked or unsafe operations.
> Note: Recompile with -Xlint:unchecked for details.
> 1 error
> 1 warning
> > Task :sdks:java:extensions:protobuf:compileJava FAILED
> > Task :runners:core-construction-java:compileJava
> Note: Some input files use or override a deprecated API.
> Note: Recompile with -Xlint:deprecation for details.
> Note: Some input files use unchecked or unsafe operations.
> Note: Recompile with -Xlint:unchecked for details.
> FAILURE: Build failed with an exception.
> * What went wrong:
> Execution failed for task ':sdks:java:extensions:protobuf:compileJava'.
> > Compilation failed; see the compiler error output for details.
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