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Posted to issues@calcite.apache.org by "Vladimir Sitnikov (JIRA)" <ji...@apache.org> on 2019/02/15 20:58:00 UTC

[jira] [Created] (CALCITE-2853) avatica.MetaImpl and calcite.jdbc.CalciteMetaImpl are not thread-safe

Vladimir Sitnikov created CALCITE-2853:
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             Summary: avatica.MetaImpl and calcite.jdbc.CalciteMetaImpl are not thread-safe
                 Key: CALCITE-2853
                 URL: https://issues.apache.org/jira/browse/CALCITE-2853
             Project: Calcite
          Issue Type: Bug
          Components: avatica, core
    Affects Versions: 1.18.0, avatica-1.13.0
            Reporter: Vladimir Sitnikov


MetaImpl is a server-side singletone, and CalciteMetaImpl never creates connections.
This causes all the incoming requests to be served by a single connection only, and it produces in wrong results when accessed from concurrent threads (e.g. CalciteRemoteDriverTest in builds.apache.org).



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