[jira] [Commented] (IGNITE-1553) Optimize transaction prepare step when store is enabled

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-1553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16038344#comment-16038344 ] 

ASF GitHub Bot commented on IGNITE-1553:
----------------------------------------

GitHub user voipp opened a pull request:

    https://github.com/apache/ignite/pull/2091

    IGNITE-1553 Optimize transaction prepare step when store is enabled

    

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/voipp/ignite IGNITE-1553

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/ignite/pull/2091.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #2091
    
----

----


> Optimize transaction prepare step when store is enabled
> -------------------------------------------------------
>
>                 Key: IGNITE-1553
>                 URL: https://issues.apache.org/jira/browse/IGNITE-1553
>             Project: Ignite
>          Issue Type: Improvement
>          Components: cache
>    Affects Versions: ignite-1.4
>            Reporter: Alexey Goncharuk
>            Assignee: Alexey Kuznetsov
>              Labels: important
>
> Currently entries are enlisted in a database transaction after grid transaction is in PREPARED state. We can do this in parallel in the following fashion (pseudo-code):
> {code}
> fut = tx.prepareAsync();
> db.write(tx.writes());
> fut.get();
> try {
>     db.commit();
>     
>     tx.commit();
> }
> catch (Exception e) {
>     tx.rollback();
> }
> {code}
> If this approach is applied, we should be able to reduce latency for transactions when write-through is enabled.



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