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https://issues.apache.org/jira/browse/PARQUET-2340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17757396#comment-17757396
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Gabor Szadovszky commented on PARQUET-2340:
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[~NathanKan], I don't think these methods are used anymore. {{parquet-cli}} has
another concept to merge files and that supports column indexes AFAIK.
[~wgtmac], could you confirm this? Maybe, we can close this jira?
> appendRowGroup will loose pageIndex
> -----------------------------------
>
> Key: PARQUET-2340
> URL: https://issues.apache.org/jira/browse/PARQUET-2340
> Project: Parquet
> Issue Type: Sub-task
> Components: parquet-mr
> Reporter: GANHONGNAN
> Priority: Major
>
> Currently,
> org.apache.parquet.hadoop.ParquetFileWriter#appendFile(org.apache.parquet.io.InputFile)
> uses appendRowGroup method to concate parquet row group. However,
> appendRowGroup method *looses* column index.
> {code:java}
> // code placeholder
> public void appendRowGroup(SeekableInputStream from, BlockMetaData rowGroup,
> boolean dropColumns) throws IOException {
> ....
> // TODO: column/offset indexes are not copied
> // (it would require seeking to the end of the file for each row groups)
> currentColumnIndexes.add(null);
> currentOffsetIndexes.add(null);
> } {code}
>
> [https://github.com/apache/parquet-mr/blob/f8465a274b42e0a96996c76f3be0b50cf85ecf15/parquet-hadoop/src/main/java/org/apache/parquet/hadoop/ParquetFileWriter.java#L1033C19-L1033C19]
>
> Look forward to functionality that support append with page index.
>
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