Session reset fails to clear compression state

NousResearch/hermes-agent · cluster 2635 · agent

Data as of 2026-10-22 12:15 UTC

Nothing open on GitHub. Fix merged in #3102. Check it covers your case.

open issues

open PRs

items grouped

Known?: Yes. 9 related items grouped here, 3 issues already closed.
Fix event: A fix was merged to main in PR #3102. Check it covers your case. No release data is tracked.
Tracker: The maintainers' tracker marks this partially resolved, deciding PR #3102. That is separate from the fix event.
Still open: Nothing open on GitHub.

Next step: read #3102, then check it covers your case.

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Multiple bugs and proposed fixes around ContextCompressor not fully resetting per-session state—including summary text, turn counters, and failure cooldown flags—when /clear, /new, or session reset is triggered. Several parallel fix attempts address the same family of stale-state issues.

Open issues0

No open issues.

Open PRs0

No open pull requests.

Fixes on record

Merged to main. A stamp counts the issues a fix is linked to.

#3102 fix(session): clear compressor summary and turn counter on /clear and /new

merged to main

files: run_agent.py, tests/test_session_reset_fix.py

#19622 fix(compressor): reset _summary_failure_cooldown_until on session reset

merged to main

files: agent/context_compressor.py

Show the diff

agent/context_compressor.py

@@ -344,6 +344,7 @@ def on_session_reset(self) -> None:
         self._last_aux_model_failure_model = None
         self._last_compression_savings_pct = 100.0
         self._ineffective_compression_count = 0
+        self._summary_failure_cooldown_until = 0.0  # transient errors must not block a fresh session
 
     def update_model(
         self,

4 PRs closed without merging

From the close comments: merged via another change 2 · done elsewhere 1 · superseded by another PR 1

#2640 fix(session): clear compressor summary and turn counter on /clear and /new · merged via another change → #3102
#2723 fix(agent): reset turn counter and compression summary on /clear or /new · done elsewhere → b374f52, #3102, #2635
#15548 fix(compressor): reset _summary_failure_cooldown_until in on_session_reset() · merged via another change → #19622
#16152 fix(compressor): reset cooldown and model-fallback flag on session reset (#16067) · superseded by another PR → #15549

Closed issues · 3

Closed#2635[Bug]: /clear and /new leave stale compression summary and turn counter across sessions
Closed#15547[Bug]: _summary_failure_cooldown_until not reset on /new or /reset — compression skipped silently in new session
Closed#16067[Bug]: ContextCompressor.on_session_reset() fails to reset _summary_failure_cooldown_until, causing compression summary to be silently skipped in new sessions

How this cluster was grouped

Link evidence (partly structural links): some members are connected by structural evidence (shared changed files, or a closing/superseded reference); the rest are joined by an automated relevance judgement over their text.
Members outside that structural core may belong to a different underlying problem.
Pairwise link density 0.20: the share of item pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. 1.00 means every pair is linked.

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At a glance

Subsystem: agent
Merged PRs: #3102, #19622
Closed issues: 3
Attempts: 4 PRs closed without merging
Fix link checked: 4 May 2026

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cluster/2635.json
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