advancedxy commented on a change in pull request #26085: [SPARK-29434] [Core]
Improve the MapStatuses Serialization Performance
URL: https://github.com/apache/spark/pull/26085#discussion_r333809995
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File path: core/src/main/scala/org/apache/spark/MapOutputTracker.scala
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@@ -20,8 +20,9 @@ package org.apache.spark
import java.io._
import java.util.concurrent.{ConcurrentHashMap, LinkedBlockingQueue,
ThreadPoolExecutor, TimeUnit}
import java.util.concurrent.locks.ReentrantReadWriteLock
-import java.util.zip.{GZIPInputStream, GZIPOutputStream}
+import com.github.luben.zstd.ZstdInputStream
+import com.github.luben.zstd.ZstdOutputStream
Review comment:
IIRC, these imports should fall into third party imports, thus under the
scala imports according to the coding style.
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