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https://issues.apache.org/jira/browse/CASSANDRA-12969?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sam Tunnicliffe updated CASSANDRA-12969:
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Assignee: Corentin Chary
> Index: index can significantly slow down boot
> ---------------------------------------------
>
> Key: CASSANDRA-12969
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12969
> Project: Cassandra
> Issue Type: Improvement
> Components: CQL
> Reporter: Corentin Chary
> Assignee: Corentin Chary
> Fix For: 4.0, 3.12
>
> Attachments: 0004-index-do-not-re-insert-values-in-IndexInfo.patch
>
>
> During startup, each existing index is opened and marked as built by adding
> an entry in "IndexInfo" and forcing a flush. Because of that we end up
> flushing one sstable per index. On systems on HDD this can take minutes for
> nothing.
> Thw following patch allows to avoid creating useless new sstables if the
> index was already marked as built and will greatly reduce the startup time
> (and improve availability during restarts).
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