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https://issues.apache.org/jira/browse/CASSANDRA-20752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Caleb Rackliffe updated CASSANDRA-20752:
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Test and Documentation Plan: new coverage in {{SSTableFlushObserverTest}}
Status: Patch Available (was: In Progress)
> Flush SAI segment builder when current sstable writer is switched
> -----------------------------------------------------------------
>
> Key: CASSANDRA-20752
> URL: https://issues.apache.org/jira/browse/CASSANDRA-20752
> Project: Apache Cassandra
> Issue Type: Improvement
> Components: Feature/SAI
> Reporter: Zhao Yang
> Assignee: Pranav
> Priority: Normal
> Fix For: 5.0.x, 6.x
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> With sharded compaction, sstable writer may be switched when reaching
> boundary in `SSTableRewriter#switchWriter`. But the switched writer's segment
> builders are not flushed until all sharded are written and committed.
> This unccessarily retains memory causing smaller segments and may even cause
> OOM due to segment builder's min-flush-size.
> We can extend `SSTableFlushObserver` to be notified on sstable switched
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