protected float getScanShare(final Configuration conf) {
    return conf.getFloat(CALL_QUEUE_SCAN_SHARE_CONF_KEY, 0);
  }
RPC Executor that uses different queues for reads and writes. With the options to use different
queues/executors for gets and scans. Each handler has its own queue and there is no stealing.
hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RWQueueRpcExecutor.java