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https://issues.apache.org/jira/browse/BEAM-9613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17091733#comment-17091733
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Kenneth Knowles commented on BEAM-9613:
---------------------------------------
I don't think I agree. JSON includes strings, numbers, objects, and arrays.
There is no ambiguity between strings and numbers. Calling toString() on the
value and then parsing it would be a performance cost and cover up the root
cause. It sounds like the Beam code that processes Avro exports (BQ data
embedded in Avro) may not know or agree with the expected embedding of BQ data
in JSON.
> BigQuery IO not support convert double type for beam row
> --------------------------------------------------------
>
> Key: BEAM-9613
> URL: https://issues.apache.org/jira/browse/BEAM-9613
> Project: Beam
> Issue Type: Bug
> Components: io-java-gcp
> Reporter: MAKSIM TSYGAN
> Priority: Major
>
> If execute query with double column via BigQueryIO.readFrom(), I get
> exception:
> Caused by: java.lang.UnsupportedOperationException: Converting BigQuery type
> 'class java.lang.Double' to 'FieldType\{typeName=DOUBLE, nullable=true,
> logicalType=null, collectionElementType=null, mapKeyType=null,
> mapValueType=null, rowSchema=null, metadata={}}' is not supported
> at
> org.apache.beam.sdk.io.gcp.bigquery.BigQueryUtils.toBeamValue(BigQueryUtils.java:532)
> at
> org.apache.beam.sdk.io.gcp.bigquery.BigQueryUtils.toBeamRowFieldValue(BigQueryUtils.java:483)
> at
> org.apache.beam.sdk.io.gcp.bigquery.BigQueryUtils.lambda$toBeamRow$6(BigQueryUtils.java:469)
> at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
> at
> java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
> at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
> at
> java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
> at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
> at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
> at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:566)
> at
> org.apache.beam.sdk.io.gcp.bigquery.BigQueryUtils.toBeamRow(BigQueryUtils.java:470)
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