[GitHub] [beam] kennknowles opened a new issue, #19354: setting numshards dynamically for TextIO.write()

[GitBox <gi...@apache.org>]

kennknowles opened a new issue, #19354:
URL: https://github.com/apache/beam/issues/19354

   I go through code for TextIO. It uses WriteFiles  in TypedWrite. Now, WriteFiles has the functionality withNumShards(ValueProvider<java.lang.Integer\>) and [withSharding](https://beam.apache.org/releases/javadoc/2.9.0/org/apache/beam/sdk/io/WriteFiles.html#withSharding-org.apache.beam.sdk.transforms.PTransform-)([PTransform](https://beam.apache.org/releases/javadoc/2.9.0/org/apache/beam/sdk/transforms/PTransform.html)<[PCollection](https://beam.apache.org/releases/javadoc/2.9.0/org/apache/beam/sdk/values/PCollection.html)<[UserT](https://beam.apache.org/releases/javadoc/2.9.0/org/apache/beam/sdk/io/WriteFiles.html)\>,[PCollectionView](https://beam.apache.org/releases/javadoc/2.9.0/org/apache/beam/sdk/values/PCollectionView.html)<java.lang.Integer\>\> sharding) but TextIO or its inner class TypedWrite doesn't have that. It would really be a great to expose that functionality to user.
   
   Are there some issues in implementation that this is not already available?
   
   Imported from Jira [BEAM-6721](https://issues.apache.org/jira/browse/BEAM-6721). Original Jira may contain additional context.
   Reported by: aditya.guru149.


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