wuyi created SPARK-28867:
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Summary: InMemoryStore checkpoint to speed up replay log file in
HistoryServer
Key: SPARK-28867
URL: https://issues.apache.org/jira/browse/SPARK-28867
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 3.0.0
Reporter: wuyi
HistoryServer now could be very slow to replay a large log file at the first
time and it always re-replay an inprogress log file after it changes. we could
periodically checkpoint InMemoryStore to speed up replay log file.
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