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76d21a0c22
" We inherited from Origin a `caching` table parameter. It's a map of named caching parameters. Before this PR two caching parameters were expected: `keys` and `rows_per_partition`. So far we have been ignoring them. This PR adds a new caching parameter called `enabled` which can be set to `true` or `false` and controls the usage of the cache for the table. By default, it's set to `true` which reflects Scylla behavior before this PR. This new capability is used to disable caching for CDC Log table. It is desirable because CDC Log entries are not expected to be read often. They also put much more pressure on memory than entries in Base Table. This is caused by the fact that some writes to Base Table can override previous writes. Every write to CDC Log is unique and does not invalidate any previous entry. Fixes #6098 Fixes #6146 Tests: unit(dev, release), manual " * haaawk-dont_cache_cdc: cdc: Don't cache CDC Log table table: invalidate disabled cache on memtable flush table: Add cache_enabled member function cf_prop_defs: persist caching_options in schema property_definitions: add get that returns variant feature: add PER_TABLE_CACHING feature caching_options: add enabled parameter