[ 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)