How to use

syncChecksumOut

method

in

org.apache.hadoop.hdfs.server.datanode.fsdataset.ReplicaOutputStreams

long flushEndNanos = System.nanoTime();
if (isSync) {
 streams.syncChecksumOut();
 datanode.metrics.addFsyncNanos(System.nanoTime() - flushEndNanos);

if (syncOnClose) {
 long fsyncStartNanos = flushEndNanos;
 streams.syncChecksumOut();
 datanode.metrics.addFsyncNanos(System.nanoTime() - fsyncStartNanos);

if (isSync) {
 long fsyncStartNanos = flushEndNanos;
 streams.syncChecksumOut();
 datanode.metrics.addFsyncNanos(System.nanoTime() - fsyncStartNanos);

if (isSync) {
 long fsyncStartNanos = flushEndNanos;
 streams.syncChecksumOut();
 datanode.metrics.addFsyncNanos(System.nanoTime() - fsyncStartNanos);

if (syncOnClose) {
 long fsyncStartNanos = flushEndNanos;
 streams.syncChecksumOut();
 datanode.metrics.addFsyncNanos(System.nanoTime() - fsyncStartNanos);

if (syncOnClose) {
 long fsyncStartNanos = flushEndNanos;
 streams.syncChecksumOut();
 datanode.metrics.addFsyncNanos(System.nanoTime() - fsyncStartNanos);