Hi Mario, Semaphores are stored in the dedicated internal cache, which is used for all atomics and sync primitives. Parameters of this cache are set in AtomicConfiguration (provided in IgniteConfiguration.setAtomicConfiguration). By default it's a partitioned cache with zero backups. If you didn't change this, you don't have any backups which can be the reason of the issue. Can you try to configure 1 or 2 backups or switch to REPLICATED mode and check if it works this way?
-Val -- View this message in context: http://apache-ignite-users.70518.x6.nabble.com/Semaphore-blocking-on-tryAcquire-while-holding-a-cache-lock-tp3031p3088.html Sent from the Apache Ignite Users mailing list archive at Nabble.com.
