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https://issues.apache.org/jira/browse/CASSANDRA-16380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17264741#comment-17264741
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Romain Hardouin commented on CASSANDRA-16380:
---------------------------------------------
Looks like a duplicate of https://issues.apache.org/jira/browse/CASSANDRA-14898
> KeyCache load performance issue during startup
> ----------------------------------------------
>
> Key: CASSANDRA-16380
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16380
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Venkata Harikrishna Nukala
> Assignee: Venkata Harikrishna Nukala
> Priority: Normal
>
> Cassandra startup blocked for loading key cache.
> From org.apache.cassandra.service.CassandraDaemon#setup method:
> {code:java}
> try
> {
> loadRowAndKeyCacheAsync().get();
> }
> catch (Throwable t)
> {
> JVMStabilityInspector.inspectThrowable(t);
> logger.warn("Error loading key or row cache", t);
> }{code}
> Key cache {{deserialize}} method is fetching all CANONICAL SSTables and picks
> one from it for each entry:
> https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/service/CacheService.java#L447.
> When the key cache is relatively big and has lots of SSTables (in thousands)
> then loading key cache take lots of time.
> Performance of key cache loading can be improved and have timeout for it.
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