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https://issues.apache.org/jira/browse/BEAM-8098?focusedWorklogId=311525&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-311525
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ASF GitHub Bot logged work on BEAM-8098:
----------------------------------------
Author: ASF GitHub Bot
Created on: 12/Sep/19 17:04
Start Date: 12/Sep/19 17:04
Worklog Time Spent: 10m
Work Description: pabloem commented on issue #9555: [BEAM-8098] Improve
documentation on BigQueryIO
URL: https://github.com/apache/beam/pull/9555#issuecomment-530916432
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Worklog Id: (was: 311525)
Time Spent: 20m (was: 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: 20m
> 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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