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* filer: fail the request, not the process, when chunks cannot be resolved CompactFileChunks and ViewFromChunks discarded the error from NonOverlappingVisibleIntervals and iterated the nil interval list it returns on failure. A CreateEntry or UpdateEntry whose context was cancelled therefore panicked in SeparateGarbageChunks and took the whole filer down, losing the metadata log it had not yet flushed. Both functions now return the error. cleanupChunks fails the request with it, the mount flush paths return it, the replication sinks and the S3 SSE range reader return it, and a ChunkStreamReader that cannot build its view fails every read with it and reports it as its SourceError instead of reading as an empty file. Fixes #11682 Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> * filer: propagate chunk resolution failures in scan paths NonOverlappingVisibleIntervals can fail without a cancelled context; the query engine and log-store callers discarded the error and dereferenced nil intervals. * query: propagate chunk resolution errors instead of skipping files When a manifest cannot be resolved, ReadParquetStatistics, countLiveLogRowsExcludingParquetSources, and computeLiveLogMinMax logged a warning and skipped the failed file, so queries returned understated counts and wrong min/max values. Surface the errors instead: the fast-path aggregation collector now returns a DataSourceError so the engine falls back to a full scan, and the row-count helpers return the error rather than a partial total. --------- Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Co-authored-by: Chris Lu <chrislusf@users.noreply.github.com> Co-authored-by: Chris Lu <chris.lu@gmail.com>