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https://issues.apache.org/jira/browse/CASSANDRA-11705?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15278336#comment-15278336
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Blake Eggleston commented on CASSANDRA-11705:
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To prevent {{addInitialDirectories}} from changing {{initialDirectories}} while
it's making a copy to return. Since we copy on write the {{initialDirectories}}
value, I could just grab a reference to {{initialDirectories}} at the top of
{{getInitialDirectories}} and copy from that instead, although both are called
infrequently enough that I don't think it would make a difference.
> clearSnapshots using Directories.dataDirectories instead of
> CFS.initialDirectories
> ----------------------------------------------------------------------------------
>
> Key: CASSANDRA-11705
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11705
> Project: Cassandra
> Issue Type: Bug
> Reporter: Blake Eggleston
> Assignee: Blake Eggleston
> Priority: Minor
> Fix For: 3.0.x, 3.x
>
>
> An oversight in CASSANDRA-10518 prevents snapshots created in data
> directories defined outside of cassandra.yaml from being cleared by
> {{Keyspace.clearSnapshots}}. {{ColumnFamilyStore.initialDirectories}} should
> be used when finding snapshots to clear, not {{Directories.dataDirectories}}
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