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Posted to commits@cassandra.apache.org by "Brandon Williams (Jira)" <ji...@apache.org> on 2021/01/14 15:23:00 UTC
[jira] [Updated] (CASSANDRA-16380) KeyCache load performance issue
during startup
[ https://issues.apache.org/jira/browse/CASSANDRA-16380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Brandon Williams updated CASSANDRA-16380:
-----------------------------------------
Resolution: Duplicate
Status: Resolved (was: Triage Needed)
> 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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