Vladimir Steshin created IGNITE-19336:
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             Summary: No action or warning after transaction timeout on commit 
phase.
                 Key: IGNITE-19336
                 URL: https://issues.apache.org/jira/browse/IGNITE-19336
             Project: Ignite
          Issue Type: Bug
            Reporter: Vladimir Steshin


Regarding [1], during a transaction some conversation messages can be lost or 
delayed. Like the lock response, prepare response or finish responses. If 
transaction delays for long, user should expect a timeout and returned control 
to the application. However, after the prepare phase _Transaction#commit()_ can 
hang forever. 

There is a point [2]. Probably we can't rollback on commit phase.

But we might not rollback, only warn user of long commit, complete the futures 
and,for example, suggest an investigation.

[1] https://cwiki.apache.org/confluence/display/IGNITE/Data+consistency
[2] https://issues.apache.org/jira/browse/IGNITE-6181



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