private PriorityBlockingQueue<Path> getQueue() {
    return logQueue.getQueue(fakeWalGroupId);
  }
Test removal of 0 length log from logQueue if the source is a recovered source and size of
logQueue is only 1.
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestBasicWALEntryStream.java