Eliminating the various _TABLE_BYTES and using strings instead. (#153)

Thanks!

hraven-core/src/main/java/com/twitter/hraven/Constants.java

@@ -1,5 +1,5 @@
 /*
-Copyright 2012 Twitter, Inc.
+Copyright 2016 Twitter, Inc.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -46,24 +46,15 @@ public class Constants {
 
   /* **** Table names **** */
   public static String HISTORY_TABLE = PREFIX + "job_history";
-  public static byte[] HISTORY_TABLE_BYTES = Bytes.toBytes(HISTORY_TABLE);
 
   public static String HISTORY_TASK_TABLE = HISTORY_TABLE + "_task";
-  public static byte[] HISTORY_TASK_TABLE_BYTES = Bytes
-      .toBytes(HISTORY_TASK_TABLE);
 
   public static String HISTORY_BY_JOBID_TABLE = HISTORY_TABLE + "-by_jobId";
-  public static byte[] HISTORY_BY_JOBID_TABLE_BYTES = Bytes
-      .toBytes(HISTORY_BY_JOBID_TABLE);
 
   public static String HISTORY_APP_VERSION_TABLE = HISTORY_TABLE
       + "_app_version";
-  public static byte[] HISTORY_APP_VERSION_TABLE_BYTES = Bytes
-      .toBytes(HISTORY_APP_VERSION_TABLE);
 
   public static String HISTORY_RAW_TABLE = HISTORY_TABLE + "_raw";
-  public static byte[] HISTORY_RAW_TABLE_BYTES = Bytes
-      .toBytes(HISTORY_RAW_TABLE);
 
   public static final String JOB_FILE_PROCESS_TABLE = PREFIX
       + "job_history_process";

hraven-core/src/main/java/com/twitter/hraven/datasource/JobHistoryByIdService.java

@@ -1,5 +1,5 @@
 /*
-Copyright 2012 Twitter, Inc.
+Copyright 2016 Twitter, Inc.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -34,7 +34,7 @@
 
 /**
  * Service to access the {@link Constants#HISTORY_BY_JOBID_TABLE}.
- * 
+ *
  */
 public class JobHistoryByIdService {
   private static Log LOG = LogFactory.getLog(HdfsStatsService.class);
@@ -68,7 +68,7 @@ public JobHistoryByIdService(Configuration hbaseConf) throws IOException {
 
     conn = ConnectionFactory.createConnection(conf);
     historyByJobIdTable = conn.getTable(
-        TableName.valueOf(Constants.HISTORY_BY_JOBID_TABLE_BYTES));
+        TableName.valueOf(Constants.HISTORY_BY_JOBID_TABLE));
   }
 
   /**
@@ -125,7 +125,7 @@ public JobKey getJobKeyById(QualifiedJobId jobId) throws IOException {
 
   /**
    * Create the secondary indexes records cluster!jobId->jobKey.
-   * 
+   *
    * @param jobKey
    * @throws IOException
    *           if the entry cannot be written.