feat: use faster query_and_wait method from google-cloud-bigquery when available #722
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I tested this manually in a local ipython instance to verify that the latency is improved when using this new functionality: After this change: # In [1]:
import pandas_gbq
# In [2]: %%timeit -n10 -r10
df = pandas_gbq.read_gbq("SELECT 1", progress_bar_type=None)
# Out [2]:
# 394 ms ± 37.8 ms per loop (mean ± std. dev. of 10 runs, 10 loops each)Before this change: # In [1]:
import pandas_gbq
# In [2]: %%timeit -n10 -r10
df = pandas_gbq.read_gbq("SELECT 1", progress_bar_type=None)
# Out [2]:
# 1.08 s ± 102 ms per loop (mean ± std. dev. of 10 runs, 10 loops each)This is quite similar to the results I observed when implementing this optimization in the DB-API connector. googleapis/python-bigquery#1747 (comment) |
…n available fix unit tests fix python 3.7 fix python 3.7 fix python 3.7 fix python 3.7 fix wait_timeout units boost test coverage remove dead code boost a little more coverage
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tests/system/test_gbq.py
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| @@ -426,33 +426,6 @@ def test_query_inside_configuration(self, project_id): | |||
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| tm.assert_frame_equal(df, DataFrame({"valid_string": ["PI"]})) | |||
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| def test_configuration_without_query(self, project_id): | |||
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I'm not 100% sure why this isn't failing anymore. I guess jobs.query is more lenient about unknown parameters than jobs.insert is?
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Could you share a link to a failing test log? I wasn't able to find it in test fusion.
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I just ran this test in a debugger. The request body we send to jobs.query looks like:
{
'useLegacySql': True,
'formatOptions': {'useInt64Timestamp': True},
'query': 'SELECT 1',
'requestId': '8c4508cb-b8e4-463b-bef8-4a8f894d3644'
}Notice that none of the copy configuration is included. I believe this to be a bug in the query_and_wait implementation. I'll send a PR today to fix this.
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I tested locally with googleapis/python-bigquery#1793 and the request body now includes unknown parameters, but surprisingly the REST API seems to ignore these. I'll follow-up on that PR to raise on common errors, such as passing in a configuration object of the wrong type.
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Updated googleapis/python-bigquery#1793 with some client-side checks for common mistakes of sending the wrong type for job_config and now this test is passing.
Will need to wait for a google-cloud-bigquery release with that fix before merging this PR.
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All looks good except for that I wanted to double check on the removed system test. |
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@Linchin Tests are passing after the most recent google-cloud-bigquery release. OK for another look. |
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LGTM, thank you! |
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Requires #720, #721, and googleapis/python-bigquery#1793 to be merged first.
Fixes #710 🦕