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Posted to issues@beam.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2019/09/12 01:20:00 UTC
[jira] [Work logged] (BEAM-8098) BigQueryIO needs documentation on
how data types in BigQuery and in Beam SDK correspond
[ https://issues.apache.org/jira/browse/BEAM-8098?focusedWorklogId=311104&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-311104 ]
ASF GitHub Bot logged work on BEAM-8098:
----------------------------------------
Author: ASF GitHub Bot
Created on: 12/Sep/19 01:19
Start Date: 12/Sep/19 01:19
Worklog Time Spent: 10m
Work Description: robinyqiu commented on pull request #9555: [BEAM-8098] Improve documentation on BigQueryIO
URL: https://github.com/apache/beam/pull/9555
While working on https://github.com/apache/beam/pull/9144, I realized there is a gap in BigQueryIO documentation on mapping between data types defined in BigQuery and in Beam SDK.
For example, if a user reads a BYTES field from BigQuery into Beam, it will be represented as java.nio.ByteBuffer type in Beam Java SDK. The user will need to do an explicit type cast to ByteBuffer in order to use the data, but there is no easy way the user can know which type they should cast to, unless digging into BigQueryIO's implementation (Java - Avro - BigQuery).
r: @pabloem
------------------------
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Issue Time Tracking
-------------------
Worklog Id: (was: 311104)
Remaining Estimate: 0h
Time Spent: 10m
> BigQueryIO needs documentation on how data types in BigQuery and in Beam SDK correspond
> ---------------------------------------------------------------------------------------
>
> Key: BEAM-8098
> URL: https://issues.apache.org/jira/browse/BEAM-8098
> Project: Beam
> Issue Type: Improvement
> Components: io-java-gcp
> Reporter: Yueyang Qiu
> Assignee: Yueyang Qiu
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> While working on [https://github.com/apache/beam/pull/9144], I realized there is a gap in BigQueryIO documentation on mapping between data types defined in BigQuery and in Beam SDK.
>
> For example, if a user reads a BYTES field from BigQuery into Beam, it will be represented as java.nio.ByteBuffer type in Beam Java SDK. The user will need to do an explicit type cast to ByteBuffer in order to use the data, but there is no easy way the user can know which type they should cast to, unless digging into BigQueryIO's implementation (Java - Avro - BigQuery).
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