Lantao Jin created SPARK-31154:
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Summary: Expose basic write metrics for InsertIntoDataSourceCommand
Key: SPARK-31154
URL: https://issues.apache.org/jira/browse/SPARK-31154
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.0.0, 3.1.0
Reporter: Lantao Jin
Spark provides interface `InsertableRelation` and the
`InsertIntoDataSourceCommand` to delegate the inserting processing to a data
source. Unlike `DataWritingCommand`, the metrics in InsertIntoDataSourceCommand
is empty and has no chance to update. So we cannot get "number of written
files" or "number of output rows" from its metrics.
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