Revert "[SPARK-23200] Reset Kubernetes-specific config on Checkpoint …

…restore"

This reverts commit d172181.

The patch is not fully tested and out-of-date. So revert it.

streaming/src/main/scala/org/apache/spark/streaming/Checkpoint.scala

@@ -53,21 +53,6 @@ class Checkpoint(ssc: StreamingContext, val checkpointTime: Time)
       "spark.driver.host",
       "spark.driver.bindAddress",
       "spark.driver.port",
-      "spark.kubernetes.driver.pod.name",
-      "spark.kubernetes.executor.podNamePrefix",
-      "spark.kubernetes.initcontainer.executor.configmapname",
-      "spark.kubernetes.initcontainer.executor.configmapkey",
-      "spark.kubernetes.initcontainer.downloadJarsResourceIdentifier",
-      "spark.kubernetes.initcontainer.downloadJarsSecretLocation",
-      "spark.kubernetes.initcontainer.downloadFilesResourceIdentifier",
-      "spark.kubernetes.initcontainer.downloadFilesSecretLocation",
-      "spark.kubernetes.initcontainer.remoteJars",
-      "spark.kubernetes.initcontainer.remoteFiles",
-      "spark.kubernetes.mountdependencies.jarsDownloadDir",
-      "spark.kubernetes.mountdependencies.filesDownloadDir",
-      "spark.kubernetes.initcontainer.executor.stagingServerSecret.name",
-      "spark.kubernetes.initcontainer.executor.stagingServerSecret.mountDir",
-      "spark.kubernetes.executor.limit.cores",
       "spark.master",
       "spark.yarn.jars",
       "spark.yarn.keytab",
@@ -81,7 +66,6 @@ class Checkpoint(ssc: StreamingContext, val checkpointTime: Time)
     val newSparkConf = new SparkConf(loadDefaults = false).setAll(sparkConfPairs)
       .remove("spark.driver.host")
       .remove("spark.driver.bindAddress")
-      .remove("spark.kubernetes.driver.pod.name")
       .remove("spark.driver.port")
     val newReloadConf = new SparkConf(loadDefaults = true)
     propertiesToReload.foreach { prop =>