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branch-3.1: [enhancement](cloud) Persist LRU information for file cache #49456 - #52811
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morrySnow merged 1 commit intoJul 7, 2025
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…9456) When the system restarts, the LRU queue in memory is lost due to lack of persistence. This requires re-scanning the disk directory to load data, leading to the following issues: 1. The loading order after restart depends on directory traversal, and the original eviction order cannot be preserved. 2. If the system enters resource limit mode after restart, it may mistakenly delete frequently accessed hot data by users. In this commit, we periodically dump the LRU queue information to disk and rebuild the LRU queue upon restart. Considering that the LRU content may be extensive, we only dump the tail end (the part that will be evicted first) of the LRU queue, with the specific quantity configured by the config.
Thearas
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Jul 4, 2025
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Thank you for your contribution to Apache Doris. Please clearly describe your PR:
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freemandealer
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run buildall |
hello-stephen
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Cloud UT Coverage ReportIncrement line coverage Increment coverage report
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hello-stephen
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BE UT Coverage ReportIncrement line coverage Increment coverage report
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freemandealer
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gavinchou
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morrySnow
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Jul 7, 2025
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pick #49456