Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/13351#discussion_r65072973
--- Diff: core/src/main/scala/org/apache/spark/util/Utils.scala ---
@@ -2345,28 +2345,23 @@ private[spark] class RedirectThread(
*/
private[spark] class CircularBuffer(sizeInBytes: Int = 10240) extends
java.io.OutputStream {
var pos: Int = 0
- var buffer = new Array[Int](sizeInBytes)
+ var isBufferFull = false
+ var buffer = new Array[Byte](sizeInBytes)
- def write(i: Int): Unit = {
- buffer(pos) = i
+ def write(input: Int): Unit = {
+ buffer(pos) = input.toByte
pos = (pos + 1) % buffer.length
+ isBufferFull = isBufferFull || (pos == 0)
}
override def toString: String = {
- val (end, start) = buffer.splitAt(pos)
- val input = new java.io.InputStream {
- val iterator = (start ++ end).iterator
+ val end = new String(buffer, 0, pos, StandardCharsets.UTF_8)
--- End diff --
There could be a multibyte char encoding broken across end and start. I
think we have to unfortunately build the whole byte array to convert and then
read it as a string.
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