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Posted to dev@parquet.apache.org by "GANHONGNAN (Jira)" <ji...@apache.org> on 2023/08/22 10:02:00 UTC

[jira] [Created] (PARQUET-2340) appendRowGroup support append pageIndex

GANHONGNAN created PARQUET-2340:
-----------------------------------

             Summary: appendRowGroup support append pageIndex
                 Key: PARQUET-2340
                 URL: https://issues.apache.org/jira/browse/PARQUET-2340
             Project: Parquet
          Issue Type: Improvement
          Components: parquet-mr
            Reporter: GANHONGNAN


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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