Lei, HUANG

[Tracking issue] Support database level options and inheritance

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### What problem does the new feature solve? This feature request is a generalization of #1496 which calls for database level TTL. Tables inside a same database may share some...

feat: reduce sorted runs during compaction

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I hereby agree to the terms of the [GreptimeDB CLA](https://github.com/GreptimeTeam/.github/blob/main/CLA.md). ## Refer to a related PR or issue link (optional) - #3416 ## What's changed and what's your intention? This...

Support creating databases with options

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### What problem does the new feature solve? This feature request is the preparatory work of #3708 Currently GreptimeDB does not support [creating databases](https://docs.greptime.com/reference/sql/create#create-database) with options. We need to support...

Limiting total rows copied in `COPY TABLE FROM` statement

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### What problem does the new feature solve? As pointed out by [this article](https://duckdb.org/2024/03/26/42-parquet-a-zip-bomb-for-the-big-data-age.html), a 42 KiB parquet file may contain hundreds of trillions of values, just like what zip...

Optimize compaction strategy to avoid merging SST files without overlapping time ranges

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### What type of enhancement is this? Performance ### What does the enhancement do? With the introduction of new merge tree memtable, we may find SST files locates in L0...

Limit CPU and memory comsumption in resource-limited environment

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### What problem does the new feature solve? GreptimeDB is designed to scale from even embedded devices to mega scale cloud services. But when it runs on resource-limited devices, like...

Failed to find SST files during compaction

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### What type of bug is this? Data corruption ### What subsystems are affected? Datanode ### Description When using S3 as storage, datanodes complains failed to compact region since it...

Statically link to vcruntime

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### What problem does the new feature solve? For some reasons the `vcruntime140.dll` or releated library files are missing on some Windows machines. When running GreptimeDB on these machines, the...

Discontinuous append queue file sequnce

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Accidentally I found that raft-engine's data directory contains discontinuous file sequences in append queue: ``` 0000000000000003.rewrite 0000000000000846.raftlog 0000000000000847.raftlog 0000000000000848.raftlog 0000000000000849.raftlog 0000000000000850.raftlog 0000000000000851.raftlog 0000000000000852.raftlog 0000000000000853.raftlog 0000000000000854.raftlog 0000000000000855.raftlog 0000000000000856.raftlog 0000000000000857.raftlog 0000000000000858.raftlog 0000000000000859.raftlog...

Sparse entry indices

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In #303 we can see some users complain about the memory usage. The memory footprint of entry indices largely depends on the average size of entries. File purge and compaction...