## Notes 

Whether this node is connected to the arbitrator; either of Yes  or No 

• arb_state 

Arbitration state 

The node ID is the same as that reported by ndb_mgm -e "SHOW" . 

All nodes should show the same arbitrator  and arb_ticket  values as well as the same arb_state value. Possible arb_state  values are ARBIT_NULL , ARBIT_INIT , ARBIT_FIND , ARBIT_PREP1 , ARBIT_PREP2 , ARBIT_START , ARBIT_RUN , ARBIT_CHOOSE , ARBIT_CRASH , and UNKNOWN . 

arb_connected  shows whether the current node is connected to the arbitrator . 

## 23.5.14.2 The ndbinfo arbitrator_validity_summary Table 

The arbitrator_validity_summary  table provides a composite view of the arbitrator with regard to the cluster’s data nodes. 

## Notes 

The arbitrator_validity_summary  table contains the following columns: 

• arbitrator 

Node ID of arbitrator 

• arb_ticket 

Internal identifier used to track arbitration 

• arb_connected 

Whether this arbitrator is connected to the cluster 

• consensus_count 

Number of data nodes that see this node as arbitrator; either of Yes  or No 

In normal operations, this table should have only 1 row for any appreciable length of time. If it has more than 1 row for longer than a few moments, then either not all nodes are connected to the arbitrator, or all nodes are connected, but do not agree on the same arbitrator. 

The arbitrator  column shows the arbitrator’s node ID. 

arb_ticket  is the internal identifier used by this arbitrator. 

arb_connected  shows whether this node is connected to the cluster as an arbitrator. 

## 23.5.14.3 The ndbinfo backup_id Table 

This table provides a way to find the ID of the backup started most recently for this cluster. 

The backup_id  table contains a single column id , which corresponds to a backup ID taken using the ndb_mgm  client START BACKUP  command. This table contains a single row. 

