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https://issues.apache.org/jira/browse/BEAM-1660?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xu Mingmin updated BEAM-1660:
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Summary: withCoder() error in JdbcIO JavaDoc example (was: does JdbcIO
need withCoder() mandately)
> withCoder() error in JdbcIO JavaDoc example
> -------------------------------------------
>
> Key: BEAM-1660
> URL: https://issues.apache.org/jira/browse/BEAM-1660
> Project: Beam
> Issue Type: Improvement
> Components: sdk-java-extensions
> Affects Versions: 0.6.0
> Reporter: Xu Mingmin
> Assignee: Xu Mingmin
> Priority: Minor
>
> Follow the JavaDoc of JdbcIO, job fails with exception:
> {code}
> Exception in thread "main" java.lang.IllegalStateException: JdbcIO.read()
> requires a coder to be set via withCoder(coder)
> at
> com.google.common.base.Preconditions.checkState(Preconditions.java:176)
> at org.apache.beam.sdk.io.jdbc.JdbcIO$Read.validate(JdbcIO.java:329)
> at org.apache.beam.sdk.io.jdbc.JdbcIO$Read.validate(JdbcIO.java:249)
> at org.apache.beam.sdk.Pipeline.applyInternal(Pipeline.java:419)
> at org.apache.beam.sdk.Pipeline.applyTransform(Pipeline.java:350)
> at org.apache.beam.sdk.values.PBegin.apply(PBegin.java:58)
> at org.apache.beam.sdk.Pipeline.apply(Pipeline.java:172)
> {code}
> It requires a Coder provided by withCoder. Need to add it in the example.
> Other point is, does it really need to specify a Coder? Users should register
> it with CoderRegistry I think.
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