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| author | Liwei Lin <lwlin7@gmail.com> | 2016-04-14 10:14:38 -0700 |
|---|---|---|
| committer | Reynold Xin <rxin@databricks.com> | 2016-04-14 10:14:38 -0700 |
| commit | 3e27940a19e7bab448f1af11d2065ecd1ec66197 (patch) | |
| tree | 76981c9be102eb396cb9be433b52143b18fd2005 /mllib-local | |
| parent | de2ad52855aee3c60bbc4642afb180d6fe62173b (diff) | |
| download | spark-3e27940a19e7bab448f1af11d2065ecd1ec66197.tar.gz spark-3e27940a19e7bab448f1af11d2065ecd1ec66197.tar.bz2 spark-3e27940a19e7bab448f1af11d2065ecd1ec66197.zip | |
[SPARK-14630][BUILD][CORE][SQL][STREAMING] Code style: public abstract methods should have explicit return types
## What changes were proposed in this pull request?
Currently many public abstract methods (in abstract classes as well as traits) don't declare return types explicitly, such as in [o.a.s.streaming.dstream.InputDStream](https://github.com/apache/spark/blob/master/streaming/src/main/scala/org/apache/spark/streaming/dstream/InputDStream.scala#L110):
```scala
def start() // should be: def start(): Unit
def stop() // should be: def stop(): Unit
```
These methods exist in core, sql, streaming; this PR fixes them.
## How was this patch tested?
N/A
## Which piece of scala style rule led to the changes?
the rule was added separately in https://github.com/apache/spark/pull/12396
Author: Liwei Lin <lwlin7@gmail.com>
Closes #12389 from lw-lin/public-abstract-methods.
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