Alexey Scherbakov created IGNITE-22286:
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Summary: Remove waitTimeout in deadlock retry policy
Key: IGNITE-22286
URL: https://issues.apache.org/jira/browse/IGNITE-22286
Project: Ignite
Issue Type: Improvement
Affects Versions: 3.0.0-beta1
Reporter: Alexey Scherbakov
Fix For: 3.0
After IGNITE-21540 and IGNITE-20127 we now have proper retries on client side.
This means we no longer need
org.apache.ignite.internal.tx.DeadlockPreventionPolicy#waitTimeout as a part of
deadock prevention policy.
Client side retries has benefit in the following scenario (having in mind
WAIT_DIE prevention):
# tx1 takes lock at timestamp 10
# tx2 tries to take lock at timestamp 20 and goes for retry (without holding
lock)
# tx1 lock is released
# tx3 takes lock at timestamp 30
# tx3 lock is released
# tx2 attemps to lock after retry and succeeds
Without retry on step 2 tx3 would retry too on step 4.
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