Github user mxm commented on a diff in the pull request:
https://github.com/apache/flink/pull/1409#discussion_r45970591
--- Diff: flink-yarn/src/main/java/org/apache/flink/yarn/Utils.java ---
@@ -221,4 +210,22 @@ public static void addToEnvironment(Map<String,
String> environment,
private Utils() {
throw new RuntimeException();
}
+
+ /**
+ * Method to extract environment variables from the flinkConfiguration
based on the given prefix String.
+ *
+ * @param envPrefix Prefix for the environment variables key
+ * @param flinkConfiguration The Flink config to get the environment
variable defintion from
+ */
+ public static Map<String, String> getEnvironmentVariables(String
envPrefix, org.apache.flink.configuration.Configuration flinkConfiguration) {
+ Map<String, String> result = new HashMap<>();
+ for(Map.Entry<String, String> entry:
flinkConfiguration.toMap().entrySet()) {
+ if(entry.getKey().startsWith(envPrefix)) {
+ // remove prefix
+ String key =
entry.getKey().substring(envPrefix.length());
--- End diff --
What happens if the key is `envPrefix`? There is little validation here.
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