PG_COMM_RECV_STREAM

PG_COMM_RECV_STREAM displays the receiving stream status of all the communication libraries for a single DN.

Table 1 PG_COMM_RECV_STREAM columns

Name	Type	Description
node_name	text	Node name
local_tid	bigint	ID of the thread using this stream
remote_name	text	Name of the peer node
remote_tid	bigint	Peer thread ID
idx	integer	Peer DN ID in the local DN
sid	integer	Stream ID in the physical connection
tcp_sock	integer	TCP socket used in the stream
state	text	Status of the stream UNKNOWN: The logical connection status is unknown. READY: The logical connection is ready. RUN: The logical connection sends packets normally. HOLD: The logical connection is waiting to send packets. CLOSED: The logical connection is closed. TO_CLOSED: The logical connection will be closed.
query_id	bigint	debug_query_id corresponding to the stream
pn_id	integer	plan_node_id of the query executed by the stream
send_smp	integer	smpid of the sender of the query executed by the stream
recv_smp	integer	smpid of the receiver of the query executed by the stream
recv_bytes	bigint	Total data volume received from the stream, in byte
time	bigint	Current lifecycle service duration of the stream, in ms
speed	bigint	Average receiving rate of the stream, in byte/s
quota	bigint	Current communication quota value of the stream, in byte
buff_usize	bigint	Current size of the data cache of the stream, in byte