Comments (4)
qgaye
commented on May 18, 2024
1
very much looking forward to the future chapter
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skyzh
commented on May 18, 2024
imm_memtables are immutable memtables. Memory is not unlimited, and it will eventually become full. We will need to flush those memtables to disk as SST files. After flushing to disk, you can read them from block cache, and we can also run background compaction so consolidate SSTs.
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qgaye
commented on May 18, 2024
Soga. I found that I overlooked block cache in SsTable.
There is another point I don't really understand. The variable imm_memtable seems to be only used for temporarily store memtable. Is this all its functions? or are other aspects ignored by me?
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skyzh
commented on May 18, 2024
In the future, we will have flush thread in the background, which flushes imm_memtable to disk. sync will be very light-weight. It will only do a fsync on WAL file.
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Related Issues (20)
- Is there anything else besides just writing? HOT 1
- failed to load manifest for workspace member HOT 4
- LsmStorage::scan does not include level 1-6 iterators HOT 1
- Hello, when is the next update plan for the tutorial? HOT 6
- question about `MergeIterator.next()` HOT 4
- Why does HeapWrapper use Box HOT 2
- Feedback after coding day 1 HOT 5
- RLock or WLock when we do a put/deletion? HOT 3
- [Bug] An error is reported when the source code is compiled HOT 1
- Scheme fork of mini-lsm
- Could you please offer a Chinese version tutorial? HOT 1
- documentation error in day1 task2 HOT 1
- simple_leveled compaction apply HOT 3
- [Doc] Any plans to support chinese version tutorial HOT 1
- Leveled compaction crashes when recovering from manifest HOT 1
- Nextest required but not included HOT 1
- Confusing SST structure figure in W1D4 HOT 2
- Should function signatures be consistent between mini-lsm-starter and mini-lsm? HOT 1
- WAL Atomiticy HOT 1
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