Github user dosoft commented on a diff in the pull request:
https://github.com/apache/spark/pull/16924#discussion_r101487342
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/EventLoggingListener.scala ---
@@ -137,7 +138,13 @@ private[spark] class EventLoggingListener(
// scalastyle:on println
if (flushLogger) {
writer.foreach(_.flush())
- hadoopDataStream.foreach(_.hflush())
+ hadoopDataStream.foreach(ds => {
--- End diff --
hsync() is even stronger than hflush(), since under the cover both methods
use the same flushOrSync(), but hsync performs an additional tasks like
flushing OS buffers (fsync).
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