Do you call JdbcStore from an operator thread or do you share it across multiple threads? In the later case the behavior is undefined.

Thank you,

Vlad

On 4/17/17 02:10, Priyanka Gugale wrote:
Can you make sure you have called connect first before createStatement.
Also if possible please share code where you do make connection and create statement in operator.

-Priyanka

On Mon, Apr 17, 2017 at 2:22 PM, chiranjeevi vasupilli <chiru....@gmail.com <mailto:chiru....@gmail.com>> wrote:

    We have utility class from where we are connecting to DB
    using com.datatorrent.lib.db.jdbc.JdbcStore.

    On Mon, Apr 17, 2017 at 1:50 PM, Priyanka Gugale
    <pri...@apache.org <mailto:pri...@apache.org>> wrote:

        Have you written any custom operator or you are
        using JdbcInputOperator from Malhar?

        -Priyanka

        On Mon, Apr 17, 2017 at 1:27 PM, chiranjeevi vasupilli
        <chiru....@gmail.com <mailto:chiru....@gmail.com>> wrote:

            Hi Priyanka,

            In logs we can see NullPointer exception while
            preparing createStatment .

            I have verified after calling connect() method of
            JdbcStore, i have called store.getConnection to print the
            connection object. But when i use the connection to
            prepare the createStatment we are getting NullPointer
            exception.

            We are not sure , why it is becoming null or we received
            any dead connection.

            Please suggest.

            Thanks
            Chiranjeevi V

            On Mon, Apr 17, 2017 at 12:19 PM, Priyanka Gugale
            <pri...@apache.org <mailto:pri...@apache.org>> wrote:

                Do you see any exceptions in your log file? If yes
                please share.
                Also you mentioned "connection getting established" -
                how do you verify that?

                -Priyanka

                On Thu, Apr 13, 2017 at 3:17 PM, chiranjeevi vasupilli
                <chiru....@gmail.com <mailto:chiru....@gmail.com>> wrote:

                    Hi Team,

                    In my use case , im using JdbcStore from Malhar
                    lib to get oracle connection . But im getting some
                    strange behavior. Connection getting established
                    and when i call *store.getConnection* it is
                    returning null. Due to this the containers getting
                    killed in my App.

                    The established connection became dead and unable
                    query, Please suggest how to handle such scenario.

                    Thanks
                    Chiranjeevi V






-- ur's
            chiru





-- ur's
    chiru



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