Commit 57fde383b3dddd0b52263218e65a0135981c2d34 changed the
messaging but did not format the error hint correctly.
This patch fixes the error hint.
Fixes#5490
This patch allows unique constraints on compressed chunks. When
trying to INSERT into compressed chunks with unique constraints
any potentially conflicting compressed batches will be decompressed
to let postgres do constraint checking on the INSERT.
With this patch only INSERT ON CONFLICT DO NOTHING will be supported.
For decompression only segment by information is considered to
determine conflicting batches. This will be enhanced in a follow-up
patch to also include orderby metadata to require decompressing
less batches.
This patch adjusts the code layout for chunk_dispatch to be similar
to the other custom nodes. All the files related to chunk_dispatch
are moved into dedicated nodes/chunk_dispatch directory.