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The gp_relfile_node table contains information about the file system objects for a relation (table, view, index, and so on).
Table 1. pg_catalog.gp_relation_node
| column | type | references | description |
|---|---|---|---|
relfilenode_oid | oid | pg_class.relfilenode | The object id of the relation file node. |
segment_file_num | integer | For append-only tables, the append-only segment file number. | |
persistent_tid | tid | Used by HAWQ to internally manage persistent representations of file system objects. | |
persistent_serial_num | bigint | Log sequence number position in the transaction log for a file block. |
