Deadlocks In Apache Ignite

Prachi Garg discusses Deadlock-Free Transactions in Apache Ignite:

When transactions in Ignite are performed with concurrency mode -OPTIMISTIC and isolation level -SERIALIZABLE, locks are acquired during transaction commit with an additional check allowing Ignite to avoid deadlocks. This also prevents cache entries from being locked for extended periods and avoids “freezing” of the whole cluster, thus providing high throughput. Furthermore, during commit, if Ignite detects a read/write conflict or a lock conflict between multiple transactions, only one transaction is allowed to commit. All other conflicting transactions are rolled back and an exception is thrown, as explained in the section below.

This sounds pretty similar to how SQL Server’s In-Memory OLTP works.

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