[misc] Minor fixed to config docs and minor code cleanups in Client

docs/setup/config.md

@@ -210,18 +210,19 @@ the JVMs running Flink's services.
 
  Supported backends: 
 
- - `jobmanager` (in-memory)
- - `filesystem` (all filesystems supported by Flink, for example HDFS)
+ - `jobmanager`: In-memory state, backup to JobManager's/ZooKeeper's memory. Should be used only for minimal state (Kafka offsets) or testing and local debugging.
+ - `filesystem`: State is in-memory on the TaskManagers, and state snapshots are stored in a file system. Supported are all filesystems supported by Flink, for example HDFS, S3, ...
 
 - `state.backend.fs.checkpointdir`: Directory for storing checkpoints in a flink supported filesystem
 Note: State backend must be accessible from the JobManager, use file:https:// only for local setups. 
 
 - `blob.storage.directory`: Directory for storing blobs (such as user jar's) on the TaskManagers.
 
-- `execution-retries.delay`: Delay between execution retries. Default value "100 s". Note that values
+- `execution-retries.delay`: Delay between execution retries. Default value "5 s". Note that values
 have to be specified as strings with a unit.
 
-- `execution-retries.default`: Default number of execution retries (Can also be set on a per-job basis).
+- `execution-retries.default`: Default number of execution retries, used by jobs that do not explicitly
+specify that value on the execution environment. Default value is zero.
 
 ## Full Reference
 
@@ -503,4 +504,4 @@ The command line value therefore is called `-p` (for parallelism). In addition,
 to [set the number of slots in the programming APIs]({{site.baseurl}}/apis/programming_guide.html#parallel-execution) for 
 the whole application and individual operators.
 
-<img src="fig/slots_parallelism.svg" class="img-responsive" />
+<img src="fig/slots_parallelism.svg" class="img-responsive" />

flink-clients/src/main/java/org/apache/flink/client/program/Client.java

@@ -69,11 +69,8 @@
 public class Client {
 
  private static final Logger LOG = LoggerFactory.getLogger(Client.class);
-
- /**
- * The configuration to use for the client (optimizer, timeouts, ...) and to connect to the
- * JobManager.
- */
+
+
  /** The optimizer used in the optimization of batch programs */
  final Optimizer compiler;
 
@@ -150,6 +147,7 @@ public Client(Configuration config, int maxSlots) throws IOException {
  timeout = AkkaUtils.getTimeout(config);
  lookupTimeout = AkkaUtils.getTimeout(config);
  }
+
  // ------------------------------------------------------------------------
  // Startup & Shutdown
  // ------------------------------------------------------------------------