Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/16330#discussion_r92953159
--- Diff: core/src/main/scala/org/apache/spark/api/r/RRDD.scala ---
@@ -127,6 +127,13 @@ private[r] object RRDD {
sparkConf.setExecutorEnv(name.toString, value.toString)
}
+ if (sparkEnvirMap.containsKey("spark.sql.default.derby.dir") &&
+ System.getProperty("derby.system.home") == null) {
+ // This must be set before SparkContext is instantiated.
+ System.setProperty("derby.system.home",
+
sparkEnvirMap.get("spark.sql.default.derby.dir").toString)
--- End diff --
Is there a better, more general (than R), place for this in SparkConf or
sql?
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