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https://issues.apache.org/jira/browse/IGNITE-5714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16440816#comment-16440816
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Dmitriy Pavlov commented on IGNITE-5714:
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[~NIzhikov] I can suggest to write to dev.list. Please also include 
[~agoncharuk] and [~sboikov] to receivers list for this mail.

> Implementation of suspend/resume for pessimistic transactions
> -------------------------------------------------------------
>
>                 Key: IGNITE-5714
>                 URL: https://issues.apache.org/jira/browse/IGNITE-5714
>             Project: Ignite
>          Issue Type: Sub-task
>          Components: general
>            Reporter: Alexey Kuznetsov
>            Assignee: Alexey Kuznetsov
>            Priority: Major
>             Fix For: 2.6
>
>
> Support transaction suspend()\resume() operations for pessimistic 
> transactions. Resume can be called in another thread.
>    _+But there is a problem+_: Imagine, we started pessimistic transaction in 
> thread T1 and then perform put operation, which leads to sending 
> GridDistributedLockRequest to another node. Lock request contains thread id 
> of the transaction. Then we call suspend, resume in another thread and we 
> also must send messages to other nodes to change thread id. 
> It seems complicated task.It’s better to get rid of sending thread id to the 
> nodes.
> We can use transaction xid on other nodes instead of thread id. Xid is sent 
> to nodes in GridDistributedLockRequest#nearXidVer
>    _+Proposed solution+_ : On remote nodes instead of thread id of near 
> transaction GridDistributedLockRequest#threadId use its xid 
> GridDistributedLockRequest#nearXidVer.
> Remove usages of near transaction's thread id on remote nodes.



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