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Posted to issues@beam.apache.org by "Jeff Webb (Jira)" <ji...@apache.org> on 2021/09/14 23:19:00 UTC
[jira] [Updated] (BEAM-10314) Writing containers containing nested
Decimal to BigQuery fails
[ https://issues.apache.org/jira/browse/BEAM-10314?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jeff Webb updated BEAM-10314:
-----------------------------
Status: Open (was: Triage Needed)
> Writing containers containing nested Decimal to BigQuery fails
> --------------------------------------------------------------
>
> Key: BEAM-10314
> URL: https://issues.apache.org/jira/browse/BEAM-10314
> Project: Beam
> Issue Type: Bug
> Components: io-py-gcp
> Reporter: Alexander Faxå
> Priority: P3
>
> This piece of code: [https://github.com/apache/beam/blob/master/sdks/python/apache_beam/io/gcp/bigquery_tools.py#L946] is attempting to handle the case when inserting objects of type decimal.Decimal into BigQuery by converting them to string.
> This works but doesn't handle the case when the `v` is really a container of nested objects (e.g. a dict), and one of them is a decimal.Decimal. This can easily happen when using ReadFromBigQuery on a table with nested schema.
> Note how `to_json_value`, which is being called here, is recursive for this reason. I verified that a fix for my crash is to insert
> ```
> if isinstance(obj, decimal.Decimal):
> obj = str(obj)
> ```
> in the beginning of to_json_value.
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