[jira] [Updated] (HIVE-26913) HiveVectorizedReader::parquetRecordReader should reuse footer information

["Rajesh Balamohan (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-26913?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rajesh Balamohan updated HIVE-26913:
------------------------------------
    Attachment: Screenshot 2023-01-09 at 4.01.14 PM.png

> HiveVectorizedReader::parquetRecordReader should reuse footer information
> -------------------------------------------------------------------------
>
>                 Key: HIVE-26913
>                 URL: https://issues.apache.org/jira/browse/HIVE-26913
>             Project: Hive
>          Issue Type: Improvement
>          Components: Iceberg integration
>            Reporter: Rajesh Balamohan
>            Priority: Major
>              Labels: performance, stability
>         Attachments: Screenshot 2023-01-09 at 4.01.14 PM.png
>
>
> HiveVectorizedReader::parquetRecordReader should reuse details of parquet footer, instead of reading it again.
>  
> It reads parquet footer here:
> [https://github.com/apache/hive/blob/master/iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/vector/HiveVectorizedReader.java#L230-L232]
> Again it reads the footer here for constructing vectorized recordreader
> [https://github.com/apache/hive/blob/master/iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/vector/HiveVectorizedReader.java#L249]
>  
> [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/io/parquet/VectorizedParquetInputFormat.java#L50]
>  
> Check the codepath of VectorizedParquetRecordReader::setupMetadataAndParquetSplit
> [https://github.com/apache/hive/blob/6b0139188aba6a95808c8d1bec63a651ec9e4bdc/ql/src/java/org/apache/hadoop/hive/ql/io/parquet/vector/VectorizedParquetRecordReader.java#L180]
>  
> It should be possible to share "ParquetMetadata" in VectorizedParuqetRecordReader.
>  



--
This message was sent by Atlassian Jira
(v8.20.10#820010)