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https://issues.apache.org/jira/browse/PARQUET-2228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17689050#comment-17689050
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ASF GitHub Bot commented on PARQUET-2228:
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wgtmac commented on PR #1026:
URL: https://github.com/apache/parquet-mr/pull/1026#issuecomment-1431185993
> > @wgtmac, by supporting multiple files to rewrite them into one we will
end up with the same number of row-groups, right? Therefore, this tool is not
ment to be used to solve the "small files problem". I am highlighting this
because we've had issues with users misunderstanding the purpose of features
like this. Maybe, we should add some notes about it to the help of parquet-cli.
>
> You're right. We might add an option to force rewriting the input files
record by record so row groups are regenerated by the writer. Does that sound
good? @gszadovszky
Something like
https://github.com/apache/parquet-mr/blob/master/parquet-cli/src/main/java/org/apache/parquet/cli/commands/ConvertCommand.java
> ParquetRewriter supports more than one input file
> -------------------------------------------------
>
> Key: PARQUET-2228
> URL: https://issues.apache.org/jira/browse/PARQUET-2228
> Project: Parquet
> Issue Type: Sub-task
> Components: parquet-mr
> Reporter: Gang Wu
> Assignee: Gang Wu
> Priority: Major
>
> ParquetRewriter currently supports only one input file. The scope of this
> task is to support multiple input files and the rewriter merges them into a
> single one w/o some rewrite options specified.
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