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Apache Spark commented on SPARK-37980: -------------------------------------- User 'olaky' has created a pull request for this issue: https://github.com/apache/spark/pull/40124 > Extend METADATA column to support row indices 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: 3.3.0 > Reporter: Prakhar Jain > Assignee: Ala Luszczak > Priority: Major > Fix For: 3.4.0 > > > Spark recently added hidden metadata column support for File based > datasources as part of SPARK-37273. > We should extend it to support ROW_INDEX/ROW_POSITION also. > > Meaning of ROW_POSITION: > ROW_INDEX/ROW_POSITION 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 > e.g. this can be used by indexer etc. -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org