Open unknown columns in the RocksDB for forward compatibility #2079
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xgreenx
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rymnc
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Aug 14, 2024
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| for column_name in existing_column_families { | ||
| if cf_descriptors_to_open.contains_key(&column_name) | ||
| || cf_descriptors_to_create.contains_key(&column_name) | ||
| { | ||
| continue; | ||
| } | ||
|
|
||
| let unknown_column_name = column_name; | ||
| let unknown_column_options = Self::default_cf_opts(&block_opts); | ||
| cf_descriptors_to_open.insert(unknown_column_name, unknown_column_options); | ||
| } |
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how about this?
Suggested change
| for column_name in existing_column_families { | |
| if cf_descriptors_to_open.contains_key(&column_name) | |
| || cf_descriptors_to_create.contains_key(&column_name) | |
| { | |
| continue; | |
| } | |
| let unknown_column_name = column_name; | |
| let unknown_column_options = Self::default_cf_opts(&block_opts); | |
| cf_descriptors_to_open.insert(unknown_column_name, unknown_column_options); | |
| } | |
| existing_column_families | |
| .iter() | |
| .filter(|column_name| { | |
| !cf_descriptors_to_open.contains_key(*column_name) | |
| && !cf_descriptors_to_create.contains_key(*column_name) | |
| }) | |
| .for_each(|column_name| { | |
| let unknown_column_options = Self::default_cf_opts(&block_opts); | |
| cf_descriptors_to_open.insert(column_name.clone(), unknown_column_options); | |
| }); |
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While this PR is merged without applying this suggestion, I also generally prefer using iterators to populate collections over using for loops and .insert. In this scenario I would also have advised to use .map instead of .for_each, to avoid having to call .insert from within the for_each closure.
Something along the lines of:
cf_descriptors_to_open.extend(existing_column_families.iter().filter(...).map(...))
| @@ -428,12 +441,18 @@ where | |||
| format!("col-{}", column) | |||
| } | |||
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| fn cf_opts(column: Description::Column, block_opts: &BlockBasedOptions) -> Options { | |||
| fn default_cf_opts(block_opts: &BlockBasedOptions) -> Options { | |||
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qq: where do we describe the column to use in default_cf_opts?
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xgreenx
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Aug 15, 2024
Addressed comments in the unknown columns PR #2079. ### Before requesting review - [x] I have reviewed the code myself
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GoldenPath1109
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to GoldenPath1109/fuel-core
that referenced
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Sep 7, 2024
Addressed comments in the unknown columns PR FuelLabs/fuel-core#2079. ### Before requesting review - [x] I have reviewed the code myself
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Rocksdb requires opening all columns mentioned in the Manifest file. This means that old versions of the
fuel-coreare unable to open columns created by a new version of thefuel-core. The change adds forward compatibility by opening unknown columns with default options.Checklist
Before requesting review