feat(plugin-backfill): async query submission with concurrency and polling#98
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feat(plugin-backfill): async query submission with concurrency and polling#98
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…ion and polling Switch backfill execution from synchronous per-chunk queries to async query submission via ClickHouse's fire-and-forget mode with server-side polling through system.processes and system.query_log. Adds configurable concurrency (--concurrency) and poll interval (--poll-interval) flags. Removes the old sequential executor, runtime orchestration, simulation flags, compatibility tokens, and event logging. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
…rance, and replay-failed - Add syncProgress() to reconcile local checkpoint state with ClickHouse system.processes/query_log, recovering from client crashes mid-backfill - Add afterTime filter to queryStatus() to ignore stale query_log entries when resubmitting with deterministic query IDs - Add maxPollErrors option for transient network error tolerance during polling - Move replayFailed logic into executeBackfill for correct ordering (sync first, then reset confirmed-failed chunks) - Make plugin.ts enforce explicit resume flow: run command rejects existing runs instead of silently continuing Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
…test timeouts Return exit code 0 with informational message when resuming an already-completed backfill instead of throwing an error. Increase E2E test timeouts to 120s for async query polling reliability. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
…llReplicas
queryStatus and syncProgress queried system.processes and system.query_log
on a single node, but submit() could route the INSERT to a different replica.
On multi-replica deployments, the poll loop would never find the query,
causing backfill runs to hang indefinitely.
Use clusterAllReplicas('parallel_replicas', ...) with skip_unavailable_shards=1
to fan out across all nodes. Add is_initial_query=1 filter to avoid matching
distributed sub-query log entries.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
wait_end_of_query: 0fire-and-forget modesubmit()andqueryStatus()to@chkit/clickhouse'sClickHouseExecutorfor async query lifecycle managementexecuteBackfill()orchestrator in@chkit/plugin-backfillusingp-mapfor configurable concurrency and server-side polling viasystem.processes/system.query_log--concurrency,--poll-interval, and--replay-failedflagsTest plan
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