felixcheung commented on a change in pull request #23977: [SPARK-26923][SQL][R]
Refactor ArrowRRunner and RRunner to share one BaseRRunner
URL: https://github.com/apache/spark/pull/23977#discussion_r263245255
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/r/ArrowRRunner.scala
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@@ -202,14 +175,17 @@ class ArrowRRunner(
// Likewise, there looks no way to send each batch in streaming
format via socket
// connection. See ARROW-4512.
// So, it reads the whole Arrow streaming-formatted binary at
once for now.
- val in = new
ByteArrayReadableSeekableByteChannel(readByteArrayData(length))
+ val buffer = new Array[Byte](length)
Review comment:
why replace `readByteArrayData`?
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