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

Tue, 10 Jan 2023 04:08:06 -0800 


     [ 
https://issues.apache.org/jira/browse/HIVE-26913?focusedWorklogId=838315&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-838315
 ]

ASF GitHub Bot logged work on HIVE-26913:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 10/Jan/23 12:07
            Start Date: 10/Jan/23 12:07
    Worklog Time Spent: 10m 
      Work Description: sonarcloud[bot] commented on PR #3933:
URL: https://github.com/apache/hive/pull/3933#issuecomment-1377162565

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Issue Time Tracking
-------------------

    Worklog Id:     (was: 838315)
    Time Spent: 20m  (was: 10m)

> 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
>            Assignee: Ayush Saxena
>            Priority: Major
>              Labels: performance, pull-request-available, stability
>         Attachments: Screenshot 2023-01-09 at 4.01.14 PM.png
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> 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.
>  



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