[Backport] [2.x] feat: add vertical scaling and SoftReference for snapshot repository data cache (#16489) #16624
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reta
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…data cache (opensearch-project#16489) - Applies `SoftReference` to cached repository data for efficient memory management under heap pressure. - Enables cache size configuration in `opensearch.yml`, adjustable within a range of 500KB to 1% of heap memory. - Sets the default cache size to `Math.max(ByteSizeUnit.KB.toBytes(500), CACHE_MAX_THRESHOLD / 2)` so it’s generally proportional to heap size. In cases where 1% of the heap is less than 1000KB, indicating a low-memory environment, the default reverts to 500KB as before. - Since `BytesReference` internally uses `byte[]`, the compressed array size is capped at `Integer.MAX_VALUE - 8` to ensure compatibility with JDK limitations on array sizes. Therefore, the maximum cache size cannot exceed this limit. Signed-off-by: inpink <[email protected]> (cherry picked from commit 53d41d3) Signed-off-by: Andriy Redko <[email protected]>
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❕ Gradle check result for 91fc7ab: UNSTABLE Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure. |
Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## 2.x #16624 +/- ##
============================================
- Coverage 71.87% 71.81% -0.06%
+ Complexity 65431 65409 -22
============================================
Files 5314 5314
Lines 305140 305166 +26
Branches 44458 44464 +6
============================================
- Hits 219311 219159 -152
- Misses 67507 67772 +265
+ Partials 18322 18235 -87 ☔ View full report in Codecov by Sentry. |
dbwiddis
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Nov 12, 2024
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Backport of #16489 to
2.x