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From "Igor Seliverstov (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (IGNITE-9310) SQL: throw exception when missing cache is attempted to be created inside a transaction
Date Fri, 17 Aug 2018 14:03:00 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-9310?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Igor Seliverstov updated IGNITE-9310:
-------------------------------------
    Component/s:     (was: mvcc)

> SQL: throw exception when missing cache is attempted to be created inside a transaction
> ---------------------------------------------------------------------------------------
>
>                 Key: IGNITE-9310
>                 URL: https://issues.apache.org/jira/browse/IGNITE-9310
>             Project: Ignite
>          Issue Type: Task
>          Components: sql
>    Affects Versions: 2.6
>            Reporter: Vladimir Ozerov
>            Assignee: Igor Seliverstov
>            Priority: Critical
>             Fix For: 2.7
>
>
> See \{{org.apache.ignite.internal.processors.query.h2.IgniteH2Indexing#prepareStatementAndCaches}}.
This method might be called inside a transaction (both MVCC and non-MVCC modes). If we do
not have any protective mechanics (need to check), then this call may lead to cache creation
on a client, which in turn will wait for all TXes to finish, including current one, leading
to a deadlock.
>  # Create tests confirming the problem
>  # If hang is reproduced - add a check for ongoing transaction and throw an exception



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