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https://issues.apache.org/jira/browse/CASSANDRA-13175?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16156931#comment-16156931
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Stefan Podkowinski edited comment on CASSANDRA-13175 at 9/7/17 1:18 PM:
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The javac error that causes ant to fail is the following. Everything else is
just a warning.
{noformat}
[javac]
/home/ubuntu/cassandra/src/java/org/apache/cassandra/utils/Throwables.java:80:
error: unreported exception Exception; must be caught or declared to be thrown
[javac] perform(Stream.of(actions));
[javac] ^
{noformat}
Seems like javac isn't able to infer the types. Using an explicit declaration
for the Stream.of() value will fix this. But now I'm getting [another
issue|https://circleci.com/gh/spodkowinski/cassandra/123#tests/containers/3]
saying that {{MoreExecutors.sameThreadExecutor())}} cannot be found. This seems
to be due to [#492|https://github.com/google/error-prone/issues/492]. Again,
the newer guava version used by errorprone breaks the build. -Why this isn't
the case on my local machine is still beyond me; classpath issues I guess..-
Edit: solved, use {{ant realclean}} to reproduce
was (Author: [email protected]):
The javac error that causes ant to fail is the following. Everything else is
just a warning.
{noformat}
[javac]
/home/ubuntu/cassandra/src/java/org/apache/cassandra/utils/Throwables.java:80:
error: unreported exception Exception; must be caught or declared to be thrown
[javac] perform(Stream.of(actions));
[javac] ^
{noformat}
Seems like javac isn't able to infer the types. Using an explicit declaration
for the Stream.of() value will fix this. But now I'm getting [another
issue|https://circleci.com/gh/spodkowinski/cassandra/123#tests/containers/3]
saying that {{MoreExecutors.sameThreadExecutor())}} cannot be found. This seems
to be due to [#492|https://github.com/google/error-prone/issues/492]. Again,
the newer guava version used by errorprone breaks the build. -Why this isn't
the case on my local machine is still beyond me; classpath issues I guess..-
Edit: solved, use {{ant realclean}}
> Integrate "Error Prone" Code Analyzer
> -------------------------------------
>
> Key: CASSANDRA-13175
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13175
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Stefan Podkowinski
> Assignee: Stefan Podkowinski
> Attachments: 0001-Add-Error-Prone-code-analyzer.patch,
> checks-2_2.out, checks-3_0.out, checks-trunk.out
>
>
> I've been playing with [Error Prone|http://errorprone.info/] by integrating
> it into the build process and to see what kind of warnings it would produce.
> So far I'm positively impressed by the coverage and usefulness of some of the
> implemented checks. See attachments for results.
> Unfortunately there are still some issues on how the analyzer is effecting
> generated code and used guava versions, see
> [#492|https://github.com/google/error-prone/issues/492]. In case those issues
> have been solved and the resulting code isn't affected by the analyzer, I'd
> suggest to add it to trunk with warn only behaviour and some less useful
> checks disabled. Alternatively a new ant target could be added, maybe with
> build breaking checks and CI integration.
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