boolean isLowReplicationRollEnabled() {
    return lowReplicationRollEnabled;
  }
{@inheritDoc}
<p>
If the pipeline isn't started yet or is empty, you will get the default replication factor.
Therefore, if this function returns 0, it means you are not properly running with the HDFS-826
patch.
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/FSHLog.java