[jira] [Created] (SPARK-25711) Allow history server to show usage

["Gengliang Wang (JIRA)" <ji...@apache.org>]

Gengliang Wang created SPARK-25711:
--------------------------------------

             Summary: Allow history server to show usage
                 Key: SPARK-25711
                 URL: https://issues.apache.org/jira/browse/SPARK-25711
             Project: Spark
          Issue Type: Improvement
          Components: Spark Core
    Affects Versions: 2.4.0
            Reporter: Gengliang Wang


Currently, if we try run
```
./start-history-server.sh  -h
```
We will get such error
```
java.io.FileNotFoundException: File -h does not exist
```

This is not user friendly. 
After fix, we can get following output:
```
Usage: ./sbin/start-history-server.sh [options]


Options:
  DIR                         Deprecated; set spark.history.fs.logDirectory directly
  --dir DIR (-d DIR)          Deprecated; set spark.history.fs.logDirectory directly
  --properties-file FILE      Path to a custom Spark properties file.
                              Default is conf/spark-defaults.conf.

Configuration options can be set by setting the corresponding JVM system property.
History Server options are always available; additional options depend on the provider.

History Server options:

  spark.history.ui.port              Port where server will listen for connections
                                     (default 18080)
  spark.history.acls.enable          Whether to enable view acls for all applications
                                     (default false)
  spark.history.provider             Name of history provider class (defaults to
                                     file system-based provider)
  spark.history.retainedApplications Max number of application UIs to keep loaded in memory
                                     (default 50)
FsHistoryProvider options:

  spark.history.fs.logDirectory      Directory where app logs are stored
                                     (default: file:/tmp/spark-events)
  spark.history.fs.updateInterval    How often to reload log data from storage
                                     (in seconds, default: 10)

```



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