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https://issues.apache.org/jira/browse/ARROW-8810?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17108356#comment-17108356
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Neal Richardson commented on ARROW-8810:
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Multi-file (Parquet and other format) datasets in R:
http://arrow.apache.org/docs/r/articles/dataset.html
If appending to a single file is important for your use case, you could use the
Arrow stream format. See discussion on ARROW-8748 for what that would look like.
> Append to parquet file?
> -----------------------
>
> Key: ARROW-8810
> URL: https://issues.apache.org/jira/browse/ARROW-8810
> Project: Apache Arrow
> Issue Type: Improvement
> Components: R
> Reporter: Carl Boettiger
> Priority: Major
>
> Is it possible to append new rows to an existing .parquet file using the R
> client's arrow::write_parquet(), in a manner similar to the `append=TRUE`
> argument in text-based output formats like write.table()?
>
> Apologies as this is perhaps more a question of documentation or user
> interface, or maybe just my ignorance.
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