WeiWenda commented on issue #23843: [SPARK-26938][CORE]fill taskMetrics to SparkListenerTaskEnd Event even though task is failed URL: https://github.com/apache/spark/pull/23843#issuecomment-474013880 there are some difference between online ui and history ui. History UI lack heartbeat event because there are too many heartbeat events which will make log file occupy too many space in HDFS. So history UI can’t deal with executor lost exception cased by heartbeat timeout naturally. Do you have any better idea to improve the history UI？
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