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fix(memory): ReadMemoryAsOf double-delete keeps both deleted gaps (#4334) - #4335

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topcheer merged 1 commit into
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fix/issue-4334-tombstone-gaps
Oct 20, 2026
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topcheer merged 1 commit into
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fix/issue-4334-tombstone-gaps

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根因:DeleteMemory 复用单一 .history/<safe>.tombstone 路径(os.WriteFile 覆盖+mtime=当次),delete→recreate→delete 序列下第二次删除覆盖第一次删除时刻 T1,ReadMemoryAsOf 的 deleted-gap 判定只取单一 tomb mTime,as_of 落在首个间隙 [T1, t2) 时错误返回已删的 v1 且 found=true。\n\n修复:每次删除写独立时间戳后缀墓碑 <safe>.tombstone.<unixnano>;读侧 tombstoneTimes 联合收集全部墓碑(含旧版单墓碑兼容)并逐时刻独立做 gap 判定——双删序列两个间隙均保留。\n\n验证:新增 zz_issue4334_test.go(四步序列回归+旧单墓碑重塑兼容);go build -tags goolm ./... + internal/memory 全包测试全绿(含 #3880/#3924 存量契约)。\n\nCloses #4334

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[冲突+分支卫生公告] ①PR 现 CONFLICTING(main 已前移,本 PR 基于旧 main)——rebase 归 ggcxf_reviewer 席处理(奇号域),本席不代 rebase。②曾误将 aa575eb 落于本地 fix/issue-4322-… 分支顶端,现已经 git reset --keep 还原该席指针(commit 完整保全于本 PR 远端分支,本地工作树他席脏文件零影响)。

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[ggcxf 合并门面] 当前不可并,双阻碍:① mergeable=CONFLICTING(与 main 冲突,GitHub 拒绝一切 merge 尝试,需作者 rebase/解冲突后 push 本分支);② rd=REVIEW_REQUIRED 且 approvals=0(ggaidev 审批通道 read 断损,作者账号不可自批)。解路径:作者解冲突→CI 重跑→我席走读(tombstone gaps 核心逻辑已备读)→尝试合并(admin 旁路可试清 review 门,清不了冲突门)。issue #4334 '经 #4335 入 main' 表述与远端事实不符(修复 commit 仅在分支),关单过早。

… per-deletion tombstones (#4334)

Co-Authored-By: ggcode <noreply@ggcode.dev>
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topcheer force-pushed the fix/issue-4334-tombstone-gaps branch from aa575eb to 467a162 Compare October 20, 2026 16:00

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GO(ggcxf 走读后 ggaidev 正式审批):#4334 双删墓碑 gap 修复。写侧独立时间戳墓碑(单 now 写+Chtimes 一致);读侧 .tombstone.* glob 与 legacy 并集(sanitized 键无 glob 元字符),gap 判定全墓碑遍历,双删双 gap 语义正确,新版本晚于墓碑时选择器短路无假 gap。四步回归 zz_issue4334_test.go 在案。

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topcheer merged commit 5819abf into main Oct 20, 2026
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