openai/codex · error · anyhow::Error

compaction request {compaction_request_id} completion used c

Error message

compaction request {compaction_request_id} completion used compaction {compaction_id}, but start used {}

What it means

Error "compaction request {compaction_request_id} completion used compaction {compaction_id}, but start used {}" thrown in openai/codex.

Source

Thrown at codex-rs/rollout-trace/src/reducer/compaction.rs:101

        &mut self,
        seq: RawEventSeq,
        wall_time_unix_ms: i64,
        compaction_id: String,
        compaction_request_id: CompactionRequestId,
        status: ExecutionStatus,
        response_payload: Option<RawPayloadRef>,
    ) -> Result<()> {
        let Some(request) = self
            .rollout
            .compaction_requests
            .get_mut(&compaction_request_id)
        else {
            bail!(
                "compaction request completion referenced unknown request {compaction_request_id}"
            );
        };
        if request.compaction_id != compaction_id {
            bail!(
                "compaction request {compaction_request_id} completion used compaction {compaction_id}, but start used {}",
                request.compaction_id
            );
        }
        request.execution.ended_at_unix_ms = Some(wall_time_unix_ms);
        request.execution.ended_seq = Some(seq);
        request.execution.status = status;
        request.raw_response_payload_id = response_payload.map(|payload| payload.raw_payload_id);
        Ok(())
    }

    /// Installs a compaction checkpoint into the reduced conversation graph.
    ///
    /// This is the semantic boundary where replacement history becomes the live
    /// thread history; request attempts alone do not imply that change.
    pub(super) fn reduce_compaction_installed_event(
        &mut self,
        wall_time_unix_ms: i64,

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/rollout-trace/src/reducer/compaction.rs:101 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/da389ca70abcbd7c. Report an issue: GitHub.