Yaohua Zhao created SPARK-45815: ----------------------------------- Summary: Provide an interface for Streaming sources to add _metadata columns Key: SPARK-45815 URL: https://issues.apache.org/jira/browse/SPARK-45815 Project: Spark Issue Type: Improvement Components: SQL Affects Versions: 3.5.1 Reporter: Yaohua Zhao
Currently, only the native V1 file-based streaming source can read the `_metadata`{{{}{}}} column: https://github.com/apache/spark/blob/370870b7a0303e4a2c4b3dea1b479b4fcbc93f8d/sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/StreamingRelation.scala#L63 Our goal is to create an interface that allows other streaming sources to add `{{{}_metadata`{}}} columns. For instance, we would like the Delta Streaming source, which you can find here: [https://github.com/delta-io/delta/blob/master/spark/src/main/scala/org/apache/spark/sql/delta/sources/DeltaDataSource.scala#L49], to extend this interface and provide the `{{{}_metadata`{}}} column for its underlying storage format, such as Parquet. -- 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