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Troubleshooting

doc/user/content/headless/iceberg-sinks/troubleshooting.md

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Sink creation fails with "input compacted past resume upper"

This error occurs when the source data has been compacted beyond the point where the sink last committed. This can happen after a Materialize backup/restore operation. You may need to drop and recreate the sink, which will re-snapshot the entire source relation.

Commit conflicts

If another process modifies the Iceberg table while Materialize is committing, you may see commit conflict errors. Materialize will automatically retry, but if conflicts persist, ensure no other writers are modifying the same table.