maropu commented on a change in pull request #28610:
URL: https://github.com/apache/spark/pull/28610#discussion_r429249205
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/DataSourceScanExec.scala
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@@ -55,10 +55,12 @@ trait DataSourceScanExec extends LeafExecNode {
// Metadata that describes more details of this scan.
protected def metadata: Map[String, String]
+ protected val maxMetadataValueLength = 100
Review comment:
private?
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