How Delta Lake Does ACID Without a Database
No database server, no lock manager — just files and a log. Here's how two Spark jobs can write the same table at the exact same moment and never corrupt it.
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Fix Delta ConcurrentAppendException (Concurrent Write Conflicts)
Two jobs wrote the same Delta table and one blew up. Here's what optimistic concurrency is really doing, and how to fix conflicts with partition filters, retries, and row-level concurrency.
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