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[MINOR]FsHistoryProvider import cleanup #26436

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[MINOR]FsHistoryProvider import cleanup #26436

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7 changes: 2 additions & 5 deletions core/src/main/scala/org/apache/spark/deploy/history/FsHistoryProvider.scala
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Expand Up @@ -21,20 +21,18 @@ import java.io.{File, FileNotFoundException, IOException}
import java.nio.file.Files
import java.util.{Date, ServiceLoader}
import java.util.concurrent.{ConcurrentHashMap, ExecutorService, Future, TimeUnit}
import java.util.zip.{ZipEntry, ZipOutputStream}
import java.util.zip.ZipOutputStream

import scala.collection.JavaConverters._
import scala.collection.mutable
import scala.concurrent.ExecutionException
import scala.io.Source
import scala.util.Try
import scala.xml.Node

import com.fasterxml.jackson.annotation.JsonIgnore
import com.google.common.io.ByteStreams
import com.google.common.util.concurrent.MoreExecutors
import org.apache.hadoop.fs.{FileStatus, FileSystem, Path}
import org.apache.hadoop.hdfs.{DFSInputStream, DistributedFileSystem}
import org.apache.hadoop.hdfs.DistributedFileSystem
import org.apache.hadoop.hdfs.protocol.HdfsConstants
import org.apache.hadoop.security.AccessControlException
import org.fusesource.leveldbjni.internal.NativeDB
Expand All @@ -47,7 +45,6 @@ import org.apache.spark.internal.config.History._
import org.apache.spark.internal.config.Status._
import org.apache.spark.internal.config.Tests.IS_TESTING
import org.apache.spark.internal.config.UI._
import org.apache.spark.io.CompressionCodec
import org.apache.spark.scheduler._
import org.apache.spark.scheduler.ReplayListenerBus._
import org.apache.spark.status._
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