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From "Vladimir Ozerov (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (IGNITE-9484) MVCC TX: Handling transactions from multiple threads in jdbc requests handler.
Date Mon, 11 Mar 2019 07:19:00 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-9484?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vladimir Ozerov updated IGNITE-9484:
------------------------------------
    Ignite Flags:   (was: Docs Required)

> MVCC TX: Handling transactions from multiple threads in jdbc requests handler.
> ------------------------------------------------------------------------------
>
>                 Key: IGNITE-9484
>                 URL: https://issues.apache.org/jira/browse/IGNITE-9484
>             Project: Ignite
>          Issue Type: Task
>          Components: jdbc, mvcc
>            Reporter: Roman Kondakov
>            Priority: Major
>
> Currently JDBC/ODBC requests are handled in NioWorker threads; that means what sessions
may be rebalanced between nio threads which makes impossible to associate a NearTransaction
with caller thread.
> There are two possible solutions:
>  # To process client messages like regular grid ones in separate thread pool in thread-per-connection
basis
>  # Implement Suspend/Resume functionality for pessimistic transactions like it was done
for optimistic ones (only pessimistic transactions are supported by mvcc-enabled caches)



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