* feat: support ALTER TABLE SET auto_flush_interval
Closes#8394.
Add a new SetRegionOption::AutoFlushInterval variant so that the
per-table auto flush interval can be changed on existing tables
via 'ALTER TABLE t SET ...', following up the CREATE TABLE path
from #8357.
- region_request.rs: parse 'auto_flush_interval' with humantime and
map it to the new variant.
- metadata.rs: persist the value (or remove it, if None) in
TableOptions.extra_options using the same humantime string format
the engine already expects.
- handle_alter.rs: apply the new interval in
handle_alter_region_options_fast (no memtable flush needed, same
pattern as Ttl) and group the variant with Ttl/Twsc in
new_region_options_on_empty_memtable.
Tests:
- Two unit tests in metadata.rs covering set and unset-to-None.
- A new sqlness case alter_auto_flush_interval.sql covering
create-then-alter, alter-then-alter, invalid duration, and
alter on a table that already had auto_flush_interval at create
time.
Signed-off-by: srivtx <crypticcc101@gmail.com>
* fix: validate auto_flush_interval > 0 in ALTER SET path
Gemini code assist flagged that the request parser accepted a zero
duration, leaving the rejection to the downstream RegionOptions
validation which only fires on next flush. Reject it at parse time
so users get the error immediately at the ALTER TABLE statement.
Also add a '0s' error case to the sqlness test.
Signed-off-by: srivtx <crypticcc101@gmail.com>
* fix: handle SET 'auto_flush_interval' = NULL and add checked-in .result
Address the rest of fengjiachun's review on #8403:
1. Empty value in ALTER SET clears the override (parallels Ttl).
'ALTER TABLE t SET ... = NULL' comes through as value = ''; we
now return AutoFlushInterval(None) so the override is removed
from TableOptions.extra_options, matching the Ttl pattern.
2. Add a unit test in region_request.rs covering the four cases
(valid, empty-clears, zero-rejected, garbage-rejected).
3. Generate and check in alter_auto_flush_interval.result via
'cargo sqlness-runner bare -t alter_auto_flush_interval'. Both
the standalone and distributed sqlness jobs now pass locally,
and the test extension covers the NULL-clears path end to end.
Signed-off-by: srivtx <crypticcc101@gmail.com>
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Signed-off-by: srivtx <crypticcc101@gmail.com>
