@InterfaceAudience.Private
  public boolean positiveJitterRate() {
    return this.jitterRate > 0;
  }
A {@link RegionSplitPolicy} implementation which splits a region as soon as any of its store
files exceeds a maximum configurable size.
<p>
This is the default split policy. From 0.94.0 on the default split policy has changed to
{@link IncreasingToUpperBoundRegionSplitPolicy}
</p>
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/ConstantSizeRegionSplitPolicy.java