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Status of decision management nodes

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For each decision management node on the Services landing page, the Status column displays the current state of a selected node. Use the following reference information to better understand the status of decision management nodes in your application.

JOINING
The node is in the process of being enabled, and the server is joining the decision management node cluster.
NORMAL
The node is in a normal, functional state.
STOPPED
The node is deactivated but is still recognized as a decision management node.
LEAVING
The node is in the process of being decommissioned, and the server is leaving the decision management node cluster.
MOVING
The node is in the process of being moved to a new position in the decision management cluster ring.
CORRUPTED
The file system in the node is corrupted. To make the node operational again, run a repair operation.
REPAIRING
A repair operation is running on the node.
COMPACTING
A compact operation is running on the node.
CLEARING
A cleanup operation is running on the node.
UNKNOWN
The status of the node is currently unknown.

Each node takes a payload that is relative to the number of available nodes. Cassandra balances the payload (data ownership) across the nodes and the total ownership adds up to 100%. For example, in a cluster consisting of three nodes, each node has ownership of approximately 33% of the data. However, balancing the payload might not be performed correctly if there are networking issues in the process of nodes joining the cluster. For this reason, Pega Platform allows one node to join at a time. The remaining nodes stay in pending joining until the previous node finishes joining.

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