dongjoon-hyun commented on code in PR #54280:
URL: https://github.com/apache/spark/pull/54280#discussion_r2796801695
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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())
+
+ // 2. Try to close and check the errors
writer.foreach(_.close())
+ if (writer.exists(_.checkError())) {
+ logWarning("Spark detects errors while closing event logs.")
+ }
+ // 3. Ensuring the underlying stream is closed at least (best-effort).
+ hadoopDataStream.foreach(_.close())
Review Comment:
https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/Closeable.html
> If the stream is already closed then invoking this method has no effect.
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