[UnifiedRadixTree] Reclaim L2 host pool slots on flush_cache#23216
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hzh0425 merged 1 commit intosgl-project:hybrid_tree/hicache_integratefrom Apr 20, 2026
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Co-authored-by: diemchai <diemchai@tencent.com>
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Motivation
UnifiedRadixCache._reset_full()doesn't reclaim host KV slots held by destroyed tree nodes, so after one POST /flush_cache the host pool stays full forever and all subsequent write_backup calls silently no-op, L2 is disabled until process restart.Modifications
Call cache_controller.reset() + cache_controller.mem_pool_host.clear() at the end of _reset_full()
Accuracy Tests
Speed Tests and Profiling
Checklist
Review and Merge Process
/tag-and-rerun-ci,/tag-run-ci-label,/rerun-failed-ci