Retry when the BQ job error can be retried

[liferoad]

Address #30513 for the flaky BQ test.

From https://ge.apache.org/s/rwjhs7f4gc2ee/console-log/task/:sdks:python:test-suites:direct:py39:postCommitIT?anchor=424&page=1,

[1m�[31mERROR   �[0m apache_beam.runners.common:bundle_processor.py:237 BigQuery job beam_bq_job_COPY_AUTOMATIC_JOB_NAME_COPY_STEP_76772e260e0c46cf96f0b94402c2595d_2af7745dca2d9060a22b202c77bbc2d8 failed. Error Result: <ErrorProto |  
-- | --
  | message: 'Error encountered during execution. Retrying may solve the problem.' |  
  | reason: 'backendError'> [while running 'write/BigQueryBatchFileLoads/ParDo(TriggerCopyJobs)/ParDo(TriggerCopyJobs)']

It looks like we should retry when this happens.

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[Abacn]

If I understood correctly, at this point the job is already completed as "DONE" and with error.

self.get_job(...) is just a GET call to get. the BigQuery load job status. It won't retry the load job.

The current retry logic is to poll existing job, and this poll API call can intermittently fail and get retried

[Abacn]

So retry poll job when a job status returned DONE with errorResult, it won't actually retry the load job.

[liferoad]

Yes, you are right. Close this.