edmondop commented on code in PR #853:
URL: https://github.com/apache/datafusion-comet/pull/853#discussion_r1724171225
##########
spark/src/main/scala/org/apache/spark/Plugins.scala:
##########
@@ -44,6 +45,20 @@ class CometDriverPlugin extends DriverPlugin with Logging
with ShimCometDriverPl
override def init(sc: SparkContext, pluginContext: PluginContext):
ju.Map[String, String] = {
logInfo("CometDriverPlugin init")
+ // register CometSparkSessionExtensions if it isn't already registered
+ val extensionKey = StaticSQLConf.SPARK_SESSION_EXTENSIONS.key
+ val extensionClass = classOf[CometSparkSessionExtensions].getName
+ if (sc.conf.contains(extensionKey)) {
+ val extensions = sc.conf.get(extensionKey)
+ if (!extensions.split(",").map(_.trim).contains(extensionClass)) {
+ sc.conf.set(extensionKey, s"$extensions,$extensionClass")
+ } else {
+ sc.conf.set(extensionKey, extensionClass)
+ }
+ } else {
+ sc.conf.set(extensionKey, extensionClass)
+ }
Review Comment:
I don't have an IDE opened now, but I think this code can be simplified
using this overloaded method of get
https://spark.apache.org/docs/3.2.1/api/java/org/apache/spark/SparkConf.html#get-java.lang.String-java.lang.String-
```suggestion
val extensions = sc.conf.get(extensionKey, "")
if (!extensions.split(",").map(_.trim).contains(extensionClass)) {
sc.conf.set(extensionKey, s"$extensions,$extensionClass")
} else {
sc.conf.set(extensionKey, extensionClass)
}
```
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