![]() ![]() The Delta Lake transaction log (also known as the DeltaLog) is an ordered record of every transaction that has ever been performed on a Delta Lake table since its inception. ![]() ![]() In this article, we’ll explore what the Delta Lake transaction log is, how it works at the file level, and how it offers an elegant solution to the problem of multiple concurrent reads and writes. The transaction log is key to understanding Delta Lake because it is the common thread that runs through many of its most important features, including ACID transactions, scalable metadata handling, time travel, and more.
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