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Release Notes
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JBoss Cache transaction ROLLBACK messages that were processed before the corresponding PREPARE were ignored. This caused the PREPARE to acquire locks and release them only after the transaction timed out. JBoss Cache now keeps track of ROLLBACK messages processed before the corresponding PREPARE message, and aborts PREPARE if the corresponding ROLLBACK was already processed.

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JBoss Cache transaction ROLLBACK messages that were processed before the corresponding PREPARE were ignored. This caused the PREPARE to acquire locks and release them only after the transaction timed out. JBoss Cache now keeps track of ROLLBACK messages processed before the corresponding PREPARE message, and aborts PREPARE if the corresponding ROLLBACK was already processed.
Release Note Status:
Documented as Resolved Issue
Docs QE Status:
NEW

If a transaction rollback is processed before the prepare for that transaction, the rollback is ignored.

This ordering can happen if the replication timeout is triggered due to other transactions waiting on locks.

The result is that when the prepare is later processed, it holds onto locks until the transaction times out.