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Posted to dev@flink.apache.org by "Fabian Hueske (JIRA)" <ji...@apache.org> on 2016/12/02 10:02:58 UTC

[jira] [Created] (FLINK-5227) Add warning to include flink-table in job fat jars

Fabian Hueske created FLINK-5227:
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             Summary: Add warning to include flink-table in job fat jars
                 Key: FLINK-5227
                 URL: https://issues.apache.org/jira/browse/FLINK-5227
             Project: Flink
          Issue Type: Improvement
          Components: Documentation, Table API & SQL
    Affects Versions: 1.1.3, 1.2.0
            Reporter: Fabian Hueske
             Fix For: 1.2.0, 1.1.4


{{flink-table}} depends on Apache Calcite which includes a JDBC Driver that prevents classloaders from being collected. This is a known issue with {{java.sqlDriverManager}} and can eventually cause OOME Permgen Taskmanager failures.

The current workaround is to not include {{flink-table}} in the fat job JAR. Instead the {{flink-table}} jar files should be added to the {{lib}} folder of the TaskManagers.



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