yaooqinn commented on code in PR #54280:
URL: https://github.com/apache/spark/pull/54280#discussion_r2797146686
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core/src/main/scala/org/apache/spark/deploy/history/EventLogFileWriters.scala:
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@@ -131,7 +131,20 @@ abstract class EventLogFileWriter(
}
protected def closeWriter(): Unit = {
+ // 1. Flush first to check the errors
+ writer.foreach(_.flush())
+ if (writer.exists(_.checkError())) {
+ logWarning("Spark detects errors while flushing event logs.")
+ }
+ hadoopDataStream.foreach(_.hflush())
Review Comment:
hadoopDataStream.foreach(_.hflush()) can throw unhandled IOException, shall
we wrap a try-catch here. Maybe we can leverage something like
`Utils.logIOError` for all fallback paths
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