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https://issues.apache.org/jira/browse/BEAM-10402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17152122#comment-17152122
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Brian Hulette commented on BEAM-10402:
--------------------------------------
Once [https://github.com/apache/beam/pull/12162] is merged this will be a
pretty good starter task. Here are some directions for anyone new to Beam who'd
like to help out with this:
To see all the issues with a module run it's compileJava task with
-PenableChecker=true, e.g. for the SQL extensions: {{./gradlew
:sdks:java:extensions:sql:compileJava -PenableChecker=true}}
Then squash all of the nullability bugs (most likely this will just require
adding some {{@Nullable}} annotations to variables or arguments).
When all the bugs are fixed, set enableChecker=true in the applyJavaNature call
in the module's build.gradle, e.g.
[sdks/java/extensions/sql/build.gradle|https://github.com/apache/beam/blob/70a93993c3623e097d892ad8bcecca19da6f2c3f/sdks/java/extensions/sql/build.gradle#L25]
> Eliminate nullability errors from Beam Java
> -------------------------------------------
>
> Key: BEAM-10402
> URL: https://issues.apache.org/jira/browse/BEAM-10402
> Project: Beam
> Issue Type: Improvement
> Components: io-java-amqp, io-java-avro, io-java-aws, io-java-azure,
> io-java-cassandra, io-java-clickhouse, io-java-elasticsearch, io-java-files,
> io-java-gcp, io-java-hadoop-file-system, io-java-hadoop-format,
> io-java-hbase, io-java-hcatalog, io-java-jdbc, io-java-jms, io-java-kafka,
> io-java-kinesis, io-java-kudu, io-java-mongodb, io-java-mqtt,
> io-java-parquet, io-java-rabbitmq, io-java-redis, io-java-solr, io-java-text,
> io-java-tfrecord, io-java-tika, io-java-utilities, io-java-xml,
> sdk-java-core, sdk-java-harness
> Reporter: Kenneth Knowles
> Assignee: Kenneth Knowles
> Priority: P1
> Time Spent: 1h
> Remaining Estimate: 0h
>
> I enabled the checker framework and the core SDK exceeds 100 nullability
> errors immediately. We should make this number zero, since nullability errors
> are solved problem in computer science and they do periodically impact Beam.
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