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From "Vladimir Ozerov (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (IGNITE-7984) DML: improve deadlock handling
Date Mon, 19 Mar 2018 11:40:00 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-7984?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vladimir Ozerov reassigned IGNITE-7984:
---------------------------------------

    Assignee: Vladimir Ozerov

> DML: improve deadlock handling 
> -------------------------------
>
>                 Key: IGNITE-7984
>                 URL: https://issues.apache.org/jira/browse/IGNITE-7984
>             Project: Ignite
>          Issue Type: Task
>          Components: sql
>    Affects Versions: 2.4
>            Reporter: Vladimir Ozerov
>            Assignee: Vladimir Ozerov
>            Priority: Major
>             Fix For: 2.5
>
>
> Current DML implementation is not transactional. It groups keys in batches by their affinity,
and then flushes that batches synchronously. This could lead to deadlocks easily.
> This could be improved if we sort key within a batch. However, this would require new
comparison function for {{BinaryObjectImpl}}, as it is not comparable.



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