dongjoon-hyun commented on code in PR #54280:
URL: https://github.com/apache/spark/pull/54280#discussion_r2797272677
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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:
This PR aims to avoid a silent failure inside `checkError`. For other
propagatable unhandled IOException, `SparkContext.stop` already logs like the
following. So, I didn't use `try ... catch ...` or `Utils.tryLog...`
intentionally.
https://github.com/apache/spark/blob/59f3a16590d8a8e1c942be8d129343a378e674d1/core/src/main/scala/org/apache/spark/SparkContext.scala#L2380-L2382
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