private TEndPoint getFollowerUrl() {
    // In current pipeConsensus design, one connector corresponds to one follower, so the peers is
    // actually a singleton list
    return nodeUrls.get(0);
  }
Add failure events to retry queue.

@param events events to retry
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/pipe/connector/protocol/pipeconsensus/PipeConsensusAsyncConnector.java