[FLINK-9684][historyserver] HistoryServer should initialize FileSyste…

…m before using it

This closes apache#6225.

flink-runtime-web/src/main/java/org/apache/flink/runtime/webmonitor/history/HistoryServer.java

@@ -103,6 +103,12 @@ public static void main(String[] args) throws Exception {
 		LOG.info("Loading configuration from {}", configDir);
 		final Configuration flinkConfig = GlobalConfiguration.loadConfiguration(configDir);
 
+		try {
+			FileSystem.initialize(flinkConfig);
+		} catch (IOException e) {
+			throw new Exception("Error while setting the default filesystem scheme from configuration.", e);
+		}
+
 		// run the history server
 		SecurityUtils.install(new SecurityConfiguration(flinkConfig));