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Posted to github@beam.apache.org by GitBox <gi...@apache.org> on 2022/07/15 16:19:44 UTC

[GitHub] [beam] Abacn commented on issue #22299: [Bug]: JDBCIO Write freeze at getConnection() in WriteFn

Abacn commented on issue #22299:
URL: https://github.com/apache/beam/issues/22299#issuecomment-1185697215

   A possible cause is that a racing condition could occur here:
   https://github.com/apache/beam/blob/2f13855aff620f0df020aead22e5d14ccab0f85e/sdks/java/io/jdbc/src/main/java/org/apache/beam/sdk/io/jdbc/JdbcIO.java#L2323
    getConnection() gets called by many process element at the same time, with connection == null, and all of them trying to establish the dataSource.getConnection at the same time. Marking this async may solve the issue.
   
   However, verifying this is blocked by broken JdbcIOIT, where the fix is currently in progress (#21796)


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