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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