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Summary of Changes
Hello @gramian, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request introduces a critical fix to the index compaction process, specifically within the LSMTreeIndexCompactor. The primary goal is to prevent an invalid position exception by guaranteeing that a minimum of one page is always targeted for compaction, even under memory constraints. While this change resolves a specific error, it's noted that it does not fully address the underlying Out-Of-Memory (OOM) issue.
Highlights
- Index Compaction Logic: Implemented a safeguard in the LSMTreeIndexCompactor to ensure that at least one page is always selected for compaction. This prevents scenarios where pagesToCompact might incorrectly resolve to zero, addressing a potential invalid position exception.
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Code Review
This pull request introduces a safeguard in the LSM Tree index compactor to prevent a potential infinite loop. The change ensures that even when the configured compaction RAM is smaller than a single page size, at least one page is selected for compaction, allowing the process to make progress. This correctly addresses the invalid position exception mentioned in the issue. The logic is sound and the change is a good improvement for the stability of the index compaction process.
| if (pagesToCompact < 1) | ||
| pagesToCompact = 1; |
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According to common Java style guides, such as the Google Java Style Guide, braces should be used with if statements even when the body contains only a single statement. This improves code clarity and helps prevent potential bugs during future modifications.1
if (pagesToCompact < 1) {
pagesToCompact = 1;
}Style Guide References
Footnotes
-
Google Java Style Guide section 4.1.1 recommends using braces for all
if,else,for,do, andwhilestatements, even for single-line bodies. ↩
|
It looks good to me, approved! |
(cherry picked from commit b3ba162)
What does this PR do?
This change adds a guard to ensure at least one page is compacted.
Related issues
#2434
Additional Notes
This does not resolve the issue but prevents the
invalid positionexception. The OOM is still present.Checklist
mvn clean packagecommand