Unless otherwise listed, the TODO was converted to a comment or put
into an issue tracker.
test/sql/
- triggers.sql: Made required change
tsl/test/
- CMakeLists.txt: TODO complete
- bgw_policy.sql: TODO complete
- continuous_aggs_materialize.sql: TODO complete
- compression.sql: TODO complete
- compression_algos.sql: TODO complete
tsl/src/
- compression/compression.c:
- row_compressor_decompress_row: Expected complete
- compression/dictionary.c: FIXME complete
- materialize.c: TODO complete
- reorder.c: TODO complete
- simple8b_rle.h:
- compressor_finish: Removed (obsolete)
src/
- extension.c: Removed due to age
- adts/simplehash.h: TODOs are from copied Postgres code
- adts/vec.h: TODO is non-significant
- planner.c: Removed
- process_utility.c
- process_altertable_end_subcmd: Removed (PG will handle case)
This simplifies the code and the access to the min/max
metadata. Before we used a custom type, but now the min/max
are just the same type as the underlying column and stored as two
columns.
This also removes the custom type that was used before.
Add a sequence id to the compressed table. This id increments
monotonically for each compressed row in a way that follows
the order by clause. We leave gaps to allow for the
possibility to fill in rows due to e.g. inserts down
the line.
The sequence id is global to the entire chunk and does not reset
for each segment-by-group-change since this has the potential
to allow some micro optimizations when ordering by a segment by
columns as well.
The sequence number is a INT32, which allows up to 200 billion
uncompressed rows per chunk to be supported (assuming 1000 rows
per compressed row and a gap of 10). Overflow is checked in the
code and will error if this is breached.
This commit integrates the SegmentMetaMinMax into the
compression logic. It adds metadata columns to the compressed table
and correctly sets it upon compression.
We also fix several errors with datum detoasting in SegmentMetaMinMax
This is useful, if some or all compressed columns are NULL.
The count reflects the number of uncompressed rows that are
in the compressed row. Stored as a 32-bit integer.
Add support for compress_chunks function.
This also adds support for compress_orderby and compress_segmentby
parameters in ALTER TABLE. These parameteres are used by the
compress_chunks function.
The parsing code will most likely be changed to use PG raw_parser
function.
We eventually want to be able to compress chunks in the background as
they become old enough. As an incremental step in this directions, this
commit adds the ability to compress any table, albeit with an
unintuitive and brittle interface. This will eventually married to our
catalogs and background workers to provide a seamless experience.
This commit also fixes a bug in gorilla in which the compressor could
not handle the case where the leading/trailing zeroes were always 0.
