Package org.apache.spark.storage

Class StorageUtils

Object
org.apache.spark.storage.StorageUtils
public class StorageUtils extends Object
Helper methods for storage-related objects.

  • Constructor Details

    • StorageUtils

      public StorageUtils()

  • Method Details

    • dispose

      public static void dispose(ByteBuffer buffer)
      Attempt to clean up a ByteBuffer if it is direct or memory-mapped. This uses an *unsafe* Sun API that will cause errors if one attempts to read from the disposed buffer. However, neither the bytes allocated to direct buffers nor file descriptors opened for memory-mapped buffers put pressure on the garbage collector. Waiting for garbage collection may lead to the depletion of off-heap memory or huge numbers of open files. There's unfortunately no standard API to manually dispose of these kinds of buffers.
      Parameters:
      buffer - (undocumented)

    • externalShuffleServicePort

      public static int externalShuffleServicePort(SparkConf conf)
      Get the port used by the external shuffle service. In Yarn mode, this may be already be set through the Hadoop configuration as the server is launched in the Yarn NM.
      Parameters:
      conf - (undocumented)
      Returns:
      (undocumented)

    • org$apache$spark$internal$Logging$$log_

      public static org.slf4j.Logger org$apache$spark$internal$Logging$$log_()

    • org$apache$spark$internal$Logging$$log__$eq

      public static void org$apache$spark$internal$Logging$$log__$eq(org.slf4j.Logger x$1)

    • LogStringContext

      public static org.apache.spark.internal.Logging.LogStringContext LogStringContext(scala.StringContext sc)