HeartSaVioR commented on issue #25577: [WIP][CORE][SPARK-28867] InMemoryStore checkpoint to speed up replay log file in HistoryServer URL: https://github.com/apache/spark/pull/25577#issuecomment-532867903 > I think that's a separate issue since It doesn't change how long it takes to replay the logs. Agreed. So ideally thinking it would be ideal if we can do two things altogether 1) roll the event log files 2) snapshotting events in driver side, but without bringing some complexity we would have to let end users pick either one. There might be still the ways to do both but I couldn't think of one which doesn't bring latency issue, additional (considerable amount of) CPU/memory consumption.
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