Error ODistributedOperationException: Quorum 5 not reached for request (id=0.476014 task=command_sql(create property `news`.`authorid` String)). Elapsed=25135ms. Servers in timeout/conflict are

OrientDB Version: 3.0.29

Java Version: 8

OS: Ubuntu 18.10

Expected behavior

Created success, not raise any error

Steps to reproduce

My OrientDB system has over 100 classes with over 50GB data, setup in cluster mode with 6 node, on 6 different IP.

  1. Open console (run ./console) and login to server…
  2. Run command to create property on class : “create property news.authorid STRING;”, it has been error .
    (Noted: This class has more 1 million record)
    Detail error
orientdb {db=web}> create property news.authorid STRING;

Error: com.orientechnologies.orient.server.distributed.task.ODistributedOperationException: Quorum 5 not reached for request (id=0.476014 task=command_sql(create property `news`.`authorid` String)). Elapsed=25135ms. Servers in timeout/conflict are:
 - ograph03-73: 132
Received:
 - ograph06-76: waiting-for-response
 - ograph04-74: waiting-for-response
 - ograph05-75: 133
 - ograph02-72: 133
 - ograph03-73: 132
        DB name="web"
        DB name="web"

When i see log in service, i see this WARN:
WARNI [ograph01-71] Timeout (25004ms) on waiting for synchronous responses from nodes=[ograph06-76, ograph04-74, ograph05-75, ograph02-72, ograph03-73] responsesSoFar=[ograph05-75, ograph02-72, ograph03-73] request=(id=0.92998 task=command_sql(create property news.authorid String) user=#69:0) [ODistributedDatabaseImpl] 2

Any idea to resolve this problem?
Please help me, thanks you very much