PGXC_GROUP

PGXC_GROUP stores node group information. In the decoupled storage-compute 3.0 version, each logical cluster node group is referred to as a virtual warehouse (VW), while at the storage KV layer, each VW corresponds to a vgroup.

**Table 1** PGXC_GROUP columns
Column	Type	Description
group_name	name	Name of the node group.
in_redistribution	"char"	Whether redistribution is required. Options: n indicates that the NodeGroup is not redistributed. y indicates the source NodeGroup in redistribution. t indicates the destination NodeGroup in redistribution. s indicates that the NodeGroup will skip redistribution.
group_members	oidvector_extend	List of node OIDs in the node group.
group_buckets	text	Collection of distributed data buckets.
is_installation	Boolean	Whether to install a sub-cluster.
group_acl	aclitem[]	Access permissions.
group_kind	"char"	Node group type. Options: i indicates the installation node group, containing all DNs. n indicates a regular non-logical cluster node group. v indicates a logical cluster node group. e indicates an elastic cluster node group. r indicates a replicated table node group, exclusively for creating replicated tables, which may include one or multiple logical cluster node groups.
group_ckpt_csn	xid	CSN of the most recent incremental extraction executed by the node group.
vgroup_id	xid	ID of the vgroup corresponding to the node group.
vgroup_bucket_count	oid	Number of buckets in the vgroup corresponding to the node group.
group_ckpt_time	timestamp with time zone	Physical time of the most recent incremental extraction executed by the node group.
apply_kv_duration	integer	Duration of the incremental scan in the most recent incremental extraction executed by the node group (in seconds).
ckpt_duration	integer	Checkpoint duration in the most recent incremental extraction executed by the node group (in seconds).