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David Capwell commented on CASSANDRA-15884:
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testing was down manually by making sure the glibc on the host was older than
the one compiled against lz4-java. When profiled saw that the Unsafe java
implementation was used, but when the host glibc is new enough then Jni is used.
> Add a startup check to detect if LZ4 uses java rather than native
> implementation
> --------------------------------------------------------------------------------
>
> Key: CASSANDRA-15884
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15884
> Project: Cassandra
> Issue Type: Improvement
> Components: Dependencies
> Reporter: David Capwell
> Assignee: David Capwell
> Priority: Normal
>
> In some environments the native implementation can’t link with glibc and
> silently falls back to java; this hurts performance. To help warn the
> operators, we should add a startup check to detect this.
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