Github user edwinalu commented on a diff in the pull request:
https://github.com/apache/spark/pull/21221#discussion_r207723188
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/EventLoggingListener.scala ---
@@ -296,7 +338,7 @@ private[spark] object EventLoggingListener extends
Logging {
private val LOG_FILE_PERMISSIONS = new
FsPermission(Integer.parseInt("770", 8).toShort)
// A cache for compression codecs to avoid creating the same codec many
times
- private val codecMap = new mutable.HashMap[String, CompressionCodec]
+ private val codecMap = new HashMap[String, CompressionCodec]
--- End diff --
Changed.
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