feat(mito): Write wal and memtable #2135
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@@ Coverage Diff @@
## develop #2135 +/- ##
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- Coverage 84.90% 84.56% -0.34%
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Files 696 696
Lines 110614 111042 +428
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- Hits 93915 93907 -8
- Misses 16699 17135 +436 |
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* feat: hold wal entry in RegionWriteCtx * feat: entry id and commited sequence * feat: write to wal * feat: write memtable * feat: fill missing columns * feat: validate write request * feat: more validation to write request * chore: fix typos * feat: remove init and validate rows in new() * style: fix clippy
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What's changed and what's your intention?
This PR writes data into WAL and memtables. It validates write requests before writing them.
The worker collects requests from different regions and writes them to the WAL in one batch.
To handle schema change, it fills default values before sending the request to the writer. Inside the writer, if the request still misses some columns, the writer pads default values again. This is possible if the write request comes during altering schema.
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