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Posted to dev@flink.apache.org by "Nick Dimiduk (JIRA)" <ji...@apache.org> on 2016/01/12 23:33:40 UTC

[jira] [Created] (FLINK-3228) Cannot submit multiple streaming involving JDBC drivers

Nick Dimiduk created FLINK-3228:
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             Summary: Cannot submit multiple streaming involving JDBC drivers
                 Key: FLINK-3228
                 URL: https://issues.apache.org/jira/browse/FLINK-3228
             Project: Flink
          Issue Type: Bug
          Components: Streaming
    Affects Versions: 0.10.1
            Reporter: Nick Dimiduk


I have a streaming pipeline that writes to JDBC in its SinkFunction. When testing in local mode, I cannot submit the same job multiple times without restarting flink. Failing to restart flink results in {{java.sql.SQLException: No suitable driver found}}. I think this has to do with how flink loads user classes and how the {{DriverManager}} resolves the JDBC Connection class.

I'm not sure if this is only when running in local mode, or in general. I've been using YARN for cluster jobs, where I have 1:1 cluster to jobs. I suspect it will impact any cluster mode where processes are recycled between jobs.



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