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https://issues.apache.org/jira/browse/CASSANDRA-15761?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ZhaoYang updated CASSANDRA-15761:
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Fix Version/s: 4.x
3.11.x
> Make SASI query safe for concurrent compaction
> ----------------------------------------------
>
> Key: CASSANDRA-15761
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15761
> Project: Cassandra
> Issue Type: Bug
> Components: Feature/2i Index
> Reporter: ZhaoYang
> Priority: Normal
> Fix For: 3.11.x, 4.x
>
>
> Read Request Thread:
> 1.) In {{QueryController#getIndexes}}, read request gets the current {{view}}
> of sstable indexes.
> 2.) Request will try to reference the {{SSTableIndex}} from the {{view}} in
> {{TermIterator#build}} and skips the {{SSTableIndex}} if it cannot be
> referenced.
> Compaction Thread:
> If a compaction finishes between 1) and 2) and no other in-flight queries are
> holding the sstable index reference, compacted {{SSTableIndex}} will be
> released.
> Then in step 2, read request will not be able to reference the released
> {{SSTableIndex}}. We won't see a corruption error, but we'll silently not
> read all data.
>
> ----
>
> Proposed fix: Read Request should make sure all {{SSTableIndexes}} from the
> {{View}} can be referenced; if not, it should retry with latest {{View}}.
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