@Override
  public ServerName getServerName() {
    // return the crashed server is to use the queue of root ServerCrashProcedure
    return this.crashedServer;
  }
A remote procedure which is used to send split WAL request to region server. It will return null
if the task succeeded or return a DoNotRetryIOException. {@link SplitWALProcedure} will help
handle the situation that encounters DoNotRetryIOException. Otherwise it will retry until
success.
hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/SplitWALRemoteProcedure.java