@edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "NN_NAKED_NOTIFY",
        justification = "This is what we want")
    public void evict() {
      synchronized (this) {
        this.notifyAll();
      }
    }
Get the maximum size of this cache.
@return max size in bytes
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/LruBlockCache.java