public static void dispose(java.nio.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.
buffer - (undocumented)
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.
conf - (undocumented)
public static org.slf4j.Logger org$apache$spark$internal$Logging$$log_()
public static void org$apache$spark$internal$Logging$$log__$eq(org.slf4j.Logger x$1)