feat(compaction): optimize for large number of small files #16585
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Signed-off-by: Little-Wallace <bupt2013211450@gmail.com>
Signed-off-by: Little-Wallace <bupt2013211450@gmail.com>
Signed-off-by: Little-Wallace <bupt2013211450@gmail.com>
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this branch: main branch: |
Li0k
reviewed
May 8, 2024
| compaction_config.target_file_size_base / 4 | ||
| let target_file_size = if input.target_level == 0 || input.target_level == base_level { | ||
| let task_size = input.target_input_size + input.select_input_size; | ||
| if input.target_level > 0 && task_size < compaction_config.max_bytes_for_level_base { |
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IMO, It is sporadic that task size is smaller than max_bytes_for_level_base. So the original behavior is changed here.
my suggestion is
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It is necessary to test daily nexmark and compare the performance.
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Cover through UT to ensure that the output meets expectations
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Trigger the branch through the special test mentioned in the PR.
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I run nexmark q0-14 here: https://buildkite.com/risingwave-test/nexmark-benchmark/builds/3641 |
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What's changed and what's your intention?
Checklist
./risedev check(or alias,./risedev c)Documentation
Release note
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