Fix JdbcIOIT, which seems to have never worked

[pabloem]

Please add a meaningful description for your change here

---

Thank you for your contribution! Follow this checklist to help us incorporate your contribution quickly and easily:

• Choose reviewer(s) and mention them in a comment (R: @username).
• Mention the appropriate issue in your description (for example: "addresses [BEAM-121] Add DisplayData for IO transforms #123), if applicable. This will automatically add a link to the pull request in the issue. If you would like the issue to automatically close on merging the pull request, comment "fixes #" instead.
• Update CHANGES.md with noteworthy changes.
• If this contribution is large, please file an Apache Individual Contributor License Agreement.

See the Contributor Guide for more tips on how to make review process smoother.

To check the build health, please visit https://github.com/apache/beam/blob/master/.test-infra/BUILD_STATUS.md

GitHub Actions Tests Status (on master branch)

See CI.md for more information about GitHub Actions CI.

[pabloem]

Run Java JdbcIO Performance Test

[pabloem]

Running with 1000 rows: https://ci-beam.apache.org/job/beam_PerformanceTests_JDBC/6514/

[pabloem]

Running with numrows parameter: https://ci-beam.apache.org/job/beam_PerformanceTests_JDBC/6515/

[pabloem]

Run Java JdbcIO Performance Test

[pabloem]

Run Java JdbcIO Performance Test

[pabloem]

Run Java JdbcIO Performance Test

[Abacn]

Run Java JdbcIO Performance Test

[Abacn]

Got

org.apache.beam.sdk.io.jdbc.JdbcIOIT > testWriteWithAutosharding FAILED
    java.lang.OutOfMemoryError: Java heap space

and then

org.apache.beam.sdk.io.jdbc.JdbcIOIT > testWriteThenRead FAILED
    java.lang.RuntimeException: Failed to create a workflow job: The size of the serialized JSON representation of the pipeline exceeds the allowable limit. For more information, please see the documentation on job submission:

[johnjcasey]

@pabloem are you still working on this PR?

[pabloem]

Run Java JdbcIO Performance Test

[pabloem]

ok I'll try to drive this PR to be complete

[johnjcasey]

Thanks Pablo

[pabloem]

Run Java JdbcIO Performance Test

[pabloem]

Run Java JdbcIO Performance Test

[pabloem]

Run Java JdbcIO Performance Test

[pabloem]

Run Java JdbcIO Performance Test

[pabloem]

Run Java PreCommit

[pabloem]

Run Java JdbcIO Performance Test

[pabloem]

• Passing run: https://ci-beam.apache.org/job/beam_PerformanceTests_JDBC/6978/
• Second passing run: https://ci-beam.apache.org/job/beam_PerformanceTests_JDBC/6979/

Testing once more to check reliability

[pabloem]

Run Java JdbcIO Performance Test

[pabloem]

Run Java PreCommit

[pabloem]

r: @johnjcasey
feel free to review or delegate : )

[github-actions]

Stopping reviewer notifications for this pull request: review requested by someone other than the bot, ceding control

[johnjcasey]

run java precommit

[johnjcasey]

LGTM