[GitHub] [spark] maropu commented on a change in pull request #29688: [SPARK-32827][SQL] Add spark.sql.maxMetadataStringLength config

[GitBox <gi...@apache.org>]

maropu commented on a change in pull request #29688:
URL: https://github.com/apache/spark/pull/29688#discussion_r485409066



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File path: sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
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@@ -2370,6 +2370,13 @@ object SQLConf {
       "(nonnegative and shorter than the maximum size).")
     .createWithDefaultString(s"${ByteArrayMethods.MAX_ROUNDED_ARRAY_LENGTH}")
 
+  val MAX_METADATA_STRING_LENGTH = buildConf("spark.sql.maxMetadataStringLength")
+    .doc("Maximum number of characters to output for a metadata string. e.g. " +
+      "`DataSourceScanExec`, every value will be abbreviated if exceed length.")
+    .version("3.1.0")
+    .intConf

Review comment:
       plz add `checkValue`




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