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https://issues.apache.org/jira/browse/CASSANDRA-12133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15362471#comment-15362471
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Robert Stupp commented on CASSANDRA-12133:
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[~limonad], you can safely ignore this message (see [OHC
issue|https://github.com/snazy/ohc/issues/17]).
It's fixed in OHC 0.4.4 (not sure why I forgot to submit a patch for that until
now)..
Using this ticket to upgrade OHC - but not in 3.0.x as it's just an "annoying"
message.
||trunk|[branch|https://github.com/apache/cassandra/compare/trunk...snazy:12133-update-ohc-trunk]|[testall|http://cassci.datastax.com/view/Dev/view/snazy/job/snazy-12133-update-ohc-trunk-testall/lastSuccessfulBuild/]|[dtest|http://cassci.datastax.com/view/Dev/view/snazy/job/snazy-12133-update-ohc-trunk-dtest/lastSuccessfulBuild/]
> Failed to load Java8 implementation ohc-core-j8
> -----------------------------------------------
>
> Key: CASSANDRA-12133
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12133
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Environment: Ubuntu 14.04, Java 1.8.0_91
> Reporter: Mike
> Priority: Trivial
> Fix For: 3.x
>
>
> After enabling row cache in cassandra.yaml by setting row_cache_size_in_mb, I
> receive this warning in system.log during startup:
> {noformat}
> WARN [main] 2016-07-05 13:36:14,671 Uns.java:169 - Failed to load Java8
> implementation ohc-core-j8 : java.lang.NoSuchMethodException:
> org.caffinitas.ohc.linked.UnsExt8.<init>(java.lang.Class)
> {noformat}
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