How to use

arrayToString

method

in

org.apache.hadoop.util.StringUtils

/**
 * Set the array of string values for the <code>name</code> property as
 * as comma delimited values.
 *
 * @param name property name.
 * @param values The values
 */
public void setStrings(String name, String... values) {
 set(name, StringUtils.arrayToString(values));
}

/**
 * Set the array of string values for the <code>name</code> property as
 * as comma delimited values.
 *
 * @param name property name.
 * @param values The values
 */
public void setStrings(String name, String... values) {
  set(name, StringUtils.arrayToString(values));
}

/** 
 * Set the array of string values for the <code>name</code> property as 
 * as comma delimited values.  
 * 
 * @param name property name.
 * @param values The values
 */
public void setStrings(String name, String... values) {
 set(name, StringUtils.arrayToString(values));
}

public static String hadoopFsListAsString(String files, Configuration conf,
           String user)
 throws URISyntaxException, FileNotFoundException, IOException,
 InterruptedException {
 if (files == null || conf == null) {
  return null;
 }
 return StringUtils.arrayToString(hadoopFsListAsArray(files, conf, user));
}

/**
 * Take an array of strings and encode it into one string.
 */
public static String encodeArray(String[] plain) {
 if (plain == null)
  return null;
 String[] escaped = new String[plain.length];
 for (int i = 0; i < plain.length; ++i) {
  if (plain[i] == null) {
   plain[i] = "";
  }
  escaped[i] = StringUtils.escapeString(plain[i]);
 }
 return StringUtils.arrayToString(escaped);
}

@SuppressWarnings("SameParameterValue") static void addDependencyJars(Configuration conf, Class<?>... classes)
  throws IOException {
 FileSystem localFs = FileSystem.getLocal(conf);
 Set<String> jars = new HashSet<>(conf.getStringCollection("tmpjars"));
 for (Class<?> clazz : classes) {
  if (clazz == null) {
   continue;
  }
  final String path = Utilities.jarFinderGetJar(clazz);
  if (path == null) {
   throw new RuntimeException("Could not find jar for class " + clazz + " in order to ship it to the cluster.");
  }
  if (!localFs.exists(new Path(path))) {
   throw new RuntimeException("Could not validate jar file " + path + " for class " + clazz);
  }
  jars.add(path);
 }
 if (jars.isEmpty()) {
  return;
 }
 //noinspection ToArrayCallWithZeroLengthArrayArgument
 conf.set("tmpjars", StringUtils.arrayToString(jars.toArray(new String[jars.size()])));
}

@SuppressWarnings("SameParameterValue") static void copyDependencyJars(Configuration conf, Class<?>... classes)
  throws IOException {
 Set<String> jars = new HashSet<>();
 FileSystem localFs = FileSystem.getLocal(conf);
 jars.addAll(conf.getStringCollection("tmpjars"));
 jars.addAll(Arrays.stream(classes)
   .filter(Objects::nonNull)
   .map(clazz -> {
    String path = Utilities.jarFinderGetJar(clazz);
    if (path == null) {
     throw new RuntimeException("Could not find jar for class "
       + clazz
       + " in order to ship it to the cluster.");
    }
    try {
     if (!localFs.exists(new Path(path))) {
      throw new RuntimeException("Could not validate jar file " + path + " for class " + clazz);
     }
    } catch (IOException e) {
     throw new RuntimeException(e);
    }
    return path;
   }).collect(Collectors.toList()));
 if (jars.isEmpty()) {
  return;
 }
 conf.set("tmpjars", StringUtils.arrayToString(jars.toArray(new String[0])));
}

conf.set("tmpjars", StringUtils.arrayToString(jars.toArray(new String[jars.size()])));

public static String getLocalDirList(Configuration conf) {
 if (HiveConf.getVar(conf, HiveConf.ConfVars.HIVE_EXECUTION_ENGINE).equals("tez")) {
  TezContext tezContext = (TezContext) TezContext.get();
  if (tezContext != null && tezContext.getTezProcessorContext() != null) {
   return StringUtils.arrayToString(tezContext.getTezProcessorContext().getWorkDirs());
  } // otherwise fall back to return null, i.e. to use local tmp dir only
 }
 return null;
}

 public static String getLocalDirList(Configuration conf) {
  if (HiveConf.getVar(conf, HiveConf.ConfVars.HIVE_EXECUTION_ENGINE).equals("tez")) {
   TezContext tezContext = (TezContext) TezContext.get();
   if (tezContext != null && tezContext.getTezProcessorContext() != null) {
    return StringUtils.arrayToString(tezContext.getTezProcessorContext().getWorkDirs());
   } // otherwise fall back to return null, i.e. to use local tmp dir only
  }

  return null;
 }
}

TableMapReduceUtil.addDependencyJars(copy);
merged.addAll(copy.getConfiguration().getStringCollection("tmpjars"));
jobConf.set("tmpjars", StringUtils.arrayToString(merged.toArray(new String[0])));

this.shuffleHandlerConf.setInt(ShuffleHandler.SHUFFLE_PORT_CONFIG_KEY, shufflePort);
this.shuffleHandlerConf.set(ShuffleHandler.SHUFFLE_HANDLER_LOCAL_DIRS,
  StringUtils.arrayToString(localDirs));
this.shuffleHandlerConf.setBoolean(ShuffleHandler.SHUFFLE_DIR_WATCHER_ENABLED,
  HiveConf.getBoolVar(daemonConf, ConfVars.LLAP_DAEMON_SHUFFLE_DIR_WATCHER_ENABLED));

/** 
 * Set the array of string values for the <code>name</code> property as 
 * as comma delimited values.  
 * 
 * @param name property name.
 * @param values The values
 */
public void setStrings(String name, String... values) {
 set(name, StringUtils.arrayToString(values));
}

/** 
 * Set the array of string values for the <code>name</code> property as 
 * as comma delimited values.  
 * 
 * @param name property name.
 * @param values The values
 */
public void setStrings(String name, String... values) {
 set(name, StringUtils.arrayToString(values));
}

/** 
 * Set the array of string values for the <code>name</code> property as 
 * as comma delimited values.  
 * 
 * @param name property name.
 * @param values The values
 */
public void setStrings(String name, String... values) {
 set(name, StringUtils.arrayToString(values));
}

/** 
 * Set the array of string values for the <code>name</code> property as 
 * as comma delimited values.  
 * 
 * @param name property name.
 * @param values The values
 */
public void setStrings(String name, String... values) {
 set(name, StringUtils.arrayToString(values));
}

/**
 * Set the array of string values for the <code>name</code> property as
 * as comma delimited values.
 *
 * @param name property name.
 * @param values The values
 */
public void setStrings(String name, String... values) {
 set(name, StringUtils.arrayToString(values));
}

public void setQueues(String queue, String[] subQueues) {
 set(getQueuePrefix(queue) + QUEUES, StringUtils.arrayToString(subQueues));
 LOG.debug("CSConf - setQueues: qPrefix=" + getQueuePrefix(queue) + 
   ", queues=" + StringUtils.arrayToString(subQueues));
}

public void setQueues(String queue, String[] subQueues) {
 set(getQueuePrefix(queue) + QUEUES, StringUtils.arrayToString(subQueues));
 LOG.debug("CSConf - setQueues: qPrefix=" + getQueuePrefix(queue) + 
   ", queues=" + StringUtils.arrayToString(subQueues));
}

public void setQueues(String queue, String[] subQueues) {
 set(getQueuePrefix(queue) + QUEUES, StringUtils.arrayToString(subQueues));
 LOG.debug("CSConf - setQueues: qPrefix=" + getQueuePrefix(queue) + 
   ", queues=" + StringUtils.arrayToString(subQueues));
}