Transaction is being rolled back automatically by some process on Ignite 2.15 and 2.16

[adiaz-dev]

Hi community,

Recently when trying to migrate a tool from Ignite 2.14 to 2.15 or 2.16, I started to see that our puts were being rollback automatically by some internal process on Ignite, specifically we are getting the following exception:

org.apache.ignite.internal.transactions.IgniteTxRollbackCheckedException: Failed to finish transaction because it has been rolled back [timeout=60000, tx=GridDhtTxLocal[xid=2e9746e0091-00000000-13a 6-dc0d-0000-000000000001,......

Please see ignite_trasaction_rollback-log.txt for a complete stack trace.

This is my configuration:

1. Number of threads: 10 (putting records into caches).
2. Transaction Concurrency: PESSIMISTIC
3. Transaction Isolation: REPEATABLE_READ
4. Transaction timeout: 60 seconds
5. Cache Atomicity Mode: TRANSACTIONAL

My exact same code works on prior to these new 2 versions, so something new was added that now it is causing a problem about transactions. Could you please help to determine what could be the reason of the problem?

Thanks in advance and regards,