Distribution status

Distribution status
Prev	Chapter 6. Distribution and High Availability	Next

The current distribution status is available on the Distribution Status section of the High Availability tab for a node (see Figure 6.1, “Distribution status”). The information in this display is:

Node Name - local node name.
Distribution State - the current state of distribution on the local node (see the section called “Distribution states” for details).
Active Distribution Listeners - the current active distribution listeners. There can be multiple active distribution listeners. Each active listener is displayed as <engine-name>:<port-number>.
Number of Active Nodes - current number of active remote nodes. An active remote node has connections established.
Number of Discovered Nodes - total number of discovered remote nodes. These nodes may have been discovered using dynamic or proxy discovery.
Number of Undiscovered Nodes - number of remote nodes that have never been discovered. These nodes are configured to use static discovery and have never had an active connection.
Number of Connections to Remote Nodes - total number of connections to all active remote nodes.
Number of Type Mismatches - total number of type mismatches detected from remote nodes.
Location Code - location code of local node.
Primary Distribution Listener - the current primary distribution listener for the node displayed as <network-protocol>:<host-name>:<port-number>.

This information can also be displayed using:

epadmin --servicename=A.X display cluster --type=local

Figure 6.1. Distribution status

Distribution configuration

The current distribution configuration for a node can be displayed using this command:

epadmin --servicename=A.X display cluster --type=configuration

This configuration information is displayed:

Listener Address List - distribution listener addresses (see the section called “DistributionListenerInterface”).
Proxy Discovery Address List - proxy discovery addresses (see the section called “ProxyDiscovery”).
Transaction Timeout (Seconds) - distributed deadlock transaction timeout (see Transaction configuration object in Transactional Memory Developers Guide).
Node Active Timeout (Seconds) - the time to wait for a remote node to move into the Active state (see DataTransport configuration object in Transactional Memory Developers Guide).
Keep Alive Send Interval (Seconds) - keep-alive send interval (see DataTransport configuration object in Transactional Memory Developers Guide).
Keep Alive Non-Response Timeout (Seconds) - the non-response timeout interval following a send failure to a remote node (see DataTransport configuration object in Transactional Memory Developers Guide).
Deferred Writes Enabled - true indicates writes are deferred until transaction commit, false indicates writes occur immediately in a transaction (see DataTransport configuration object in Transactional Memory Developers Guide).
TCP No Delay Enabled - true indicates TCP no-delay is enabled, false indicates that it is disabled (see DataTransport configuration object in Transactional Memory Developers Guide).
Maximum PDU Size (Bytes) - maximum Protocol Data Unit (PDU) used for distributed communication (see DataTransport configuration object in Transactional Memory Developers Guide).
Completed Transaction History Count - maximum number of completed and aborted transactions to maintain in the transaction history (see Transaction configuration object in Transactional Memory Developers Guide).
Number of Listener Search Ports - the number of distributed listener ports to search before reporting a distribution start failure (see the section called “Communication”).
Node Hash Size - size of internal hash to lookup node names.
Type Hash Size - size of internal hash to lookup managed object types.
Discovered Location Hash Size - size of internal hash to lookup discovered locations.