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session-fork parent token count resolution has no timeout and blocks session creation indefinitely #101718
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hugenshen/openclaw
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P2Normal backlog priority with limited blast radius.Normal backlog priority with limited blast radius.clawsweeper:fix-shape-clearClawSweeper found a clear likely implementation shape for this issue.ClawSweeper found a clear likely implementation shape for this issue.clawsweeper:queueable-fixClawSweeper marked this issue as an existing queue_fix_pr work candidate.ClawSweeper marked this issue as an existing queue_fix_pr work candidate.clawsweeper:source-reproClawSweeper found a high-confidence source-level issue reproduction.ClawSweeper found a high-confidence source-level issue reproduction.impact:crash-loopCrash, hang, restart loop, or process-level availability failure.Crash, hang, restart loop, or process-level availability failure.impact:session-stateSession, memory, transcript, context, or agent state can drift or corrupt.Session, memory, transcript, context, or agent state can drift or corrupt.issue-rating: 🦞 diamond lobsterVery strong issue quality with high-confidence source-level or clear reproduction.Very strong issue quality with high-confidence source-level or clear reproduction.maturity:stableIssue affects a taxonomy feature currently scored M4/M5.Issue affects a taxonomy feature currently scored M4/M5.no-staleExclude from stale automationExclude from stale automation
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P2Normal backlog priority with limited blast radius.Normal backlog priority with limited blast radius.clawsweeper:fix-shape-clearClawSweeper found a clear likely implementation shape for this issue.ClawSweeper found a clear likely implementation shape for this issue.clawsweeper:queueable-fixClawSweeper marked this issue as an existing queue_fix_pr work candidate.ClawSweeper marked this issue as an existing queue_fix_pr work candidate.clawsweeper:source-reproClawSweeper found a high-confidence source-level issue reproduction.ClawSweeper found a high-confidence source-level issue reproduction.impact:crash-loopCrash, hang, restart loop, or process-level availability failure.Crash, hang, restart loop, or process-level availability failure.impact:session-stateSession, memory, transcript, context, or agent state can drift or corrupt.Session, memory, transcript, context, or agent state can drift or corrupt.issue-rating: 🦞 diamond lobsterVery strong issue quality with high-confidence source-level or clear reproduction.Very strong issue quality with high-confidence source-level or clear reproduction.maturity:stableIssue affects a taxonomy feature currently scored M4/M5.Issue affects a taxonomy feature currently scored M4/M5.no-staleExclude from stale automationExclude from stale automation
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Description
The recently-modified
session-fork.ts(commit88f1ec38) callsresolveParentForkTokenCountto decide whether to fork a parent session. This async call reads the parent transcript file, parses it, and counts tokens — but it has no timeout or abort signal.Location
Impact
If the parent session transcript file is very large (hundreds of MB from a long-running agent) or if the filesystem is slow (NFS, FUSE, or a saturated SSD), this call blocks the session-create path indefinitely with no upper bound. Every new thread/reply in that session stalls, and the gateway accumulates blocked async contexts that never resolve, eventually exhausting connection slots.