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Hyukjin Kwon commented on SPARK-37980: -------------------------------------- I am super curious about this because pandas API on Spark is currently generating such numbers for row index concept. > ROW_INDEX is basically an index of a row within a file. But I don't think this makes much sense. This is virtually what {{monotonically_increasing_id()}} does. > Extend METADATA column to support row indexes for file based data sources > ------------------------------------------------------------------------- > > Key: SPARK-37980 > URL: https://issues.apache.org/jira/browse/SPARK-37980 > Project: Spark > Issue Type: Improvement > Components: SQL > Affects Versions: 3.3 > Reporter: Prakhar Jain > Priority: Major > > Spark recently added hidden metadata column support for File based > datasources as part of SPARK-37273. > We should extend it to support ROW_INDEX also. > > Definition: > ROW_INDEX is basically an index of a row within a file. E.g. 5th row in the > file will have ROW_INDEX 5. > > Use cases: > Row Indexes can be used in a variety of ways. A (fileName, rowIndex) tuple > uniquely identifies row in a table. This information can be used to mark > rows. An Index can be easily created using the Row Indexes. -- This message was sent by Atlassian Jira (v8.20.1#820001) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org