Yang Jie created SPARK-33352:
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Summary: Fix procedure-like declaration compilation warning in
Scala 2.13
Key: SPARK-33352
URL: https://issues.apache.org/jira/browse/SPARK-33352
Project: Spark
Issue Type: Sub-task
Components: Build
Affects Versions: 3.1.0
Reporter: Yang Jie
Similar to spark-29291, just to track Spark 3.1.0.
There are two similar compilation warnings about procedure-like declaration in
Scala 2.13.3:
{code:java}
[WARNING] [Warn]
/spark/core/src/main/scala/org/apache/spark/HeartbeatReceiver.scala:70:
procedure syntax is deprecated for constructors: add `=`, as in method
definition
[WARNING] [Warn]
/spark/core/src/main/scala/org/apache/spark/storage/BlockManagerDecommissioner.scala:211:
procedure syntax is deprecated: instead, add `: Unit =` to explicitly declare
`run`'s return type
{code}
For constructors method definition should be `this(...) = \{ }` not `this(...)
\{ }`, for without
`return type` methods definition should be `def methodName(...): Unit = {}` not
`def methodName(...) {}`
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