The gp_persistent_filespace_node table keeps track of the status of file system objects in relation to the transaction status of filespace objects. This information is used to make sure the state of the system catalogs and the file system files persisted to disk are synchronized.

Table 1. pg_catalog.gp_persistent_filespace_node

column type references description
filespace_oid oid pg_filespace.oid object id of the filespace
db_id smallint   primary segment id
location text   primary filesystem location
persistent_state smallint   0 - free

1 - create pending

2 - created

3 - drop pending

4 - aborting create

5 - “Just in Time” create pending

6 - bulk load create pending

reserved integer   Not used. Reserved for future use.
parent_xid integer   Global transaction id.
persistent_serial_num bigint   Log sequence number position in the transaction log for a file block.
previous_free_tid tid   Used by HAWQ to internally manage persistent representations of file system objects.