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From Sotirios Delimanolis <>
Subject What does Cassandra use (JNI?) that triggers GCLocker Initiated GCs?
Date Thu, 21 Apr 2016 17:54:06 GMT
According to this Oracle document, GCLocker Initiated GC
    is triggered when a JNI critical region was released. GC is blocked when any thread
is in the JNI Critical region.    If GC was requested during that period, that GC is invoked
after all the threads come out of the JNI critical region.

What part of Cassandra's implementation does anything with JNI?
In our GC logs, this is by far the most common reason for GC pauses.

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