andygrove commented on code in PR #362:
URL: https://github.com/apache/datafusion-comet/pull/362#discussion_r1588326109


##########
common/src/main/scala/org/apache/comet/CometConf.scala:
##########
@@ -376,12 +376,15 @@ object CometConf {
     .booleanConf
     .createWithDefault(false)
 
-  val COMET_CAST_STRING_TO_TIMESTAMP: ConfigEntry[Boolean] = conf(
-    "spark.comet.cast.stringToTimestamp")
-    .doc(
-      "Comet is not currently fully compatible with Spark when casting from 
String to Timestamp.")
-    .booleanConf
-    .createWithDefault(false)
+  val COMET_CAST_ALLOW_INCOMPATIBLE: ConfigEntry[Boolean] =
+    conf("spark.comet.cast.allowIncompatible")
+      .doc(
+        "Comet is not currently fully compatible with Spark for all cast 
operations. " +
+          "Set this config to true to allow them anyway. See compatibility 
guide " +
+          "for more information.")
+      .booleanConf
+      // TODO change this to false and set this config explicitly in tests 
where needed
+      .createWithDefault(true)

Review Comment:
   I will create a separate PR to change the default value and update any tests 
that need it, after this PR is merged



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