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https://issues.apache.org/jira/browse/SPARK-28870?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jungtaek Lim updated SPARK-28870:
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Summary: Snapshot event log files to support incremental reading (was:
Snapshot old event log files to support compaction)
> Snapshot event log files to support incremental reading
> -------------------------------------------------------
>
> Key: SPARK-28870
> URL: https://issues.apache.org/jira/browse/SPARK-28870
> Project: Spark
> Issue Type: Sub-task
> Components: Spark Core
> Affects Versions: 3.0.0
> Reporter: Jungtaek Lim
> Priority: Major
>
> This issue tracks the effort on compacting old event log files into snapshot
> and achieve both goals, 1) reduce overall event log file size 2) speed up
> replaying event logs. It also deals with cleaning event log files as snapshot
> will provide the safe way to clean up old event log files without losing
> ability to replay whole event logs.
> This issue will be on top of SPARK-28869 as SPARK-28869 will create rolled
> event log files. This issue will be also on top of SPARK-29111 as SPARK-29111
> will add the ability to snapshot/restore from/to KVStore.
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