LuciferYang commented on a change in pull request #29836:
URL: https://github.com/apache/spark/pull/29836#discussion_r492854256
##########
File path:
streaming/src/main/scala/org/apache/spark/streaming/DStreamGraph.scala
##########
@@ -29,8 +29,8 @@ import org.apache.spark.util.Utils
final private[streaming] class DStreamGraph extends Serializable with Logging {
- private val inputStreams = new ArrayBuffer[InputDStream[_]]()
- private val outputStreams = new ArrayBuffer[DStream[_]]()
+ private var inputStreams = mutable.ArraySeq.empty[InputDStream[_]]
Review comment:
```
Welcome to Scala 2.13.3 (OpenJDK 64-Bit Server VM, Java 1.8.0_232).
Type in expressions for evaluation. Or try :help.
scala> val s = scala.collection.mutable.ArraySeq.empty[Int]
val s: scala.collection.mutable.ArraySeq[Int] = ArraySeq()
scala> s += 1
^
error: value += is not a member of
scala.collection.mutable.ArraySeq[Int]
Expression does not convert to assignment because receiver is not
assignable.
```
execute in Scala shell above
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
