style

Author: bowenliang123

kyuubi-server/src/main/scala/org/apache/kyuubi/engine/ProcBuilder.scala

@@ -21,18 +21,19 @@ import java.io.{File, FileFilter, IOException}
 import java.net.URI
 import java.nio.charset.StandardCharsets
 import java.nio.file.{Files, Path, Paths}
+
 import scala.collection.JavaConverters._
+
 import com.google.common.annotations.VisibleForTesting
 import com.google.common.collect.EvictingQueue
 import org.apache.commons.lang3.StringUtils.containsIgnoreCase
+
 import org.apache.kyuubi._
 import org.apache.kyuubi.config.KyuubiConf
 import org.apache.kyuubi.config.KyuubiConf.KYUUBI_HOME
 import org.apache.kyuubi.operation.log.OperationLog
 import org.apache.kyuubi.util.NamedThreadFactory
 
-import scala.collection.mutable.ArrayBuffer
-
 trait ProcBuilder {
 
   import ProcBuilder._