mirror of
https://github.com/timescale/timescaledb.git
synced 2025-05-17 02:53:51 +08:00
097db3d589
This change refactors the chunk index handling to make better use of standard PostgreSQL catalog information, while removing the hypertable_index metadata table and associated triggers, including those on the chunk_index table. The chunk_index table itself is also simplified. A benefit of this refactoring is that indexes are no longer created using string mangling to construct the CREATE INDEX command for a chunk, based on the string definition of the hypertable index. Instead, indexes are created in C using proper index-related internal data structures. Chunk indexes can now also be renamed and are added in the parent index tablespace. Changing tablespace on a hypertable index also recurses to chunks, as expected. Default indexes that are added when creating a hypertable use the hypertable's tablespace. Creating Hypertable indexes with the CONCURRENTLY modifier is currently blocked, due to unclear semantics regarding concurrent creation over many tables, including how to deal with snapshots.