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From "Alexey Kuznetsov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-4887) Support for starting transaction in another thread
Date Thu, 18 May 2017 09:53:04 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-4887?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16015516#comment-16015516
] 

Alexey Kuznetsov commented on IGNITE-4887:
------------------------------------------

[~IDGorkov] It could be complicated task to decide whether transaction is stuck. Because we
could have long running transactions. One possible solution is heartbeat messages exchanging.

> Support for starting transaction in another thread
> --------------------------------------------------
>
>                 Key: IGNITE-4887
>                 URL: https://issues.apache.org/jira/browse/IGNITE-4887
>             Project: Ignite
>          Issue Type: Improvement
>          Components: general
>    Affects Versions: 1.9
>            Reporter: Alexey Kuznetsov
>            Assignee: Alexey Kuznetsov
>
> Consider the following pseudo-code:
> {code:xml}
>         IgniteTransactions transactions = ignite1.transactions();
>         Transaction tx = startTransaction(transactions);
>         cache.put("key1", 1);
>         tx.stop();
> {code}
> And in another thread:
> {code:xml}
>                 transactions.txStart(tx);
>                 cache.put("key3", 3);
>                 cache.remove("key2");
>                 tx.commit();
> {code}
> The Api should be implemented , that let you continue transaction in another thread.
> method stop() should mark the transaction as unavailable for further commit.
> method txStart() should resume the transaction. 
> reason behind the proposal :
> Consider the next scenario:
> we begin transaction, doing some changes and start async future that will be able to
introduce futher changes into transaction and commit it in the end.



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