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From "Alexey Goncharuk (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (IGNITE-1553) Optimize transaction prepare step when store is enabled
Date Sat, 26 Sep 2015 00:41:04 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-1553?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alexey Goncharuk updated IGNITE-1553:
-------------------------------------
    Issue Type: Improvement  (was: Bug)

> 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
>
> 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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