org.apache.hadoop.mapred.lib.MultipleOutputs.checkNamedOutput()方法的使用及代码示例

x33g5p2x  于2022-01-25 转载在 其他  
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本文整理了Java中org.apache.hadoop.mapred.lib.MultipleOutputs.checkNamedOutput()方法的一些代码示例，展示了MultipleOutputs.checkNamedOutput()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。MultipleOutputs.checkNamedOutput()方法的具体详情如下：
包路径：org.apache.hadoop.mapred.lib.MultipleOutputs
类名称：MultipleOutputs
方法名：checkNamedOutput

MultipleOutputs.checkNamedOutput介绍

[英]Checks if a named output is alreadyDefined or not.
[中]检查命名输出是否已定义。

代码示例

代码示例来源：origin: ch.cern.hadoop/hadoop-mapreduce-client-core

/**
 * Returns if a named output is multiple.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return <code>true</code> if the name output is multi, <code>false</code>
 *         if it is single. If the name output is not defined it returns
 *         <code>false</code>
 */
public static boolean isMultiNamedOutput(JobConf conf, String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getBoolean(MO_PREFIX + namedOutput + MULTI, false);
}

代码示例来源：origin: ch.cern.hadoop/hadoop-mapreduce-client-core

/**
 * Returns the key class for a named output.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return class for the named output key
 */
public static Class<?> getNamedOutputKeyClass(JobConf conf,
                       String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getClass(MO_PREFIX + namedOutput + KEY, null,
 Object.class);
}

代码示例来源：origin: io.hops/hadoop-mapreduce-client-core

/**
 * Returns if a named output is multiple.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return <code>true</code> if the name output is multi, <code>false</code>
 *         if it is single. If the name output is not defined it returns
 *         <code>false</code>
 */
public static boolean isMultiNamedOutput(JobConf conf, String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getBoolean(MO_PREFIX + namedOutput + MULTI, false);
}

代码示例来源：origin: ch.cern.hadoop/hadoop-mapreduce-client-core

/**
 * Returns the named output OutputFormat.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return namedOutput OutputFormat
 */
public static Class<? extends OutputFormat> getNamedOutputFormatClass(
 JobConf conf, String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getClass(MO_PREFIX + namedOutput + FORMAT, null,
  OutputFormat.class);
}

代码示例来源：origin: com.facebook.hadoop/hadoop-core

/**
 * Returns if a named output is multiple.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return <code>true</code> if the name output is multi, <code>false</code>
 *         if it is single. If the name output is not defined it returns
 *         <code>false</code>
 */
public static boolean isMultiNamedOutput(JobConf conf, String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getBoolean(MO_PREFIX + namedOutput + MULTI, false);
}

代码示例来源：origin: org.apache.hadoop/hadoop-mapred

/**
 * Returns the value class for a named output.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return class of named output value
 */
public static Class<? extends Writable> getNamedOutputValueClass(JobConf conf,
                        String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getClass(MO_PREFIX + namedOutput + VALUE, null,
  Writable.class);
}

代码示例来源：origin: io.prestosql.hadoop/hadoop-apache

/**
 * Returns the named output OutputFormat.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return namedOutput OutputFormat
 */
public static Class<? extends OutputFormat> getNamedOutputFormatClass(
 JobConf conf, String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getClass(MO_PREFIX + namedOutput + FORMAT, null,
  OutputFormat.class);
}

代码示例来源：origin: io.prestosql.hadoop/hadoop-apache

/**
 * Returns the key class for a named output.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return class for the named output key
 */
public static Class<?> getNamedOutputKeyClass(JobConf conf,
                       String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getClass(MO_PREFIX + namedOutput + KEY, null,
 Object.class);
}

代码示例来源：origin: com.github.jiayuhan-it/hadoop-mapreduce-client-core

/**
 * Returns if a named output is multiple.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return <code>true</code> if the name output is multi, <code>false</code>
 *         if it is single. If the name output is not defined it returns
 *         <code>false</code>
 */
public static boolean isMultiNamedOutput(JobConf conf, String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getBoolean(MO_PREFIX + namedOutput + MULTI, false);
}

代码示例来源：origin: com.github.jiayuhan-it/hadoop-mapreduce-client-core

/**
 * Returns the value class for a named output.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return class of named output value
 */
public static Class<?> getNamedOutputValueClass(JobConf conf,
                        String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getClass(MO_PREFIX + namedOutput + VALUE, null,
  Object.class);
}

代码示例来源：origin: com.facebook.hadoop/hadoop-core

/**
 * Returns the value class for a named output.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return class of named output value
 */
public static Class<? extends Writable> getNamedOutputValueClass(JobConf conf,
                        String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getClass(MO_PREFIX + namedOutput + VALUE, null,
  Writable.class);
}

代码示例来源：origin: org.jvnet.hudson.hadoop/hadoop-core

/**
 * Returns if a named output is multiple.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return <code>true</code> if the name output is multi, <code>false</code>
 *         if it is single. If the name output is not defined it returns
 *         <code>false</code>
 */
public static boolean isMultiNamedOutput(JobConf conf, String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getBoolean(MO_PREFIX + namedOutput + MULTI, false);
}

代码示例来源：origin: org.jvnet.hudson.hadoop/hadoop-core

/**
 * Returns the value class for a named output.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return class of named output value
 */
public static Class<? extends Writable> getNamedOutputValueClass(JobConf conf,
                        String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getClass(MO_PREFIX + namedOutput + VALUE, null,
  Writable.class);
}

代码示例来源：origin: io.hops/hadoop-mapreduce-client-core

/**
 * Returns the named output OutputFormat.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return namedOutput OutputFormat
 */
public static Class<? extends OutputFormat> getNamedOutputFormatClass(
 JobConf conf, String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getClass(MO_PREFIX + namedOutput + FORMAT, null,
  OutputFormat.class);
}

代码示例来源：origin: com.github.jiayuhan-it/hadoop-mapreduce-client-core

/**
 * Returns the named output OutputFormat.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return namedOutput OutputFormat
 */
public static Class<? extends OutputFormat> getNamedOutputFormatClass(
 JobConf conf, String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getClass(MO_PREFIX + namedOutput + FORMAT, null,
  OutputFormat.class);
}

代码示例来源：origin: com.facebook.hadoop/hadoop-core

/**
 * Returns the named output OutputFormat.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return namedOutput OutputFormat
 */
public static Class<? extends OutputFormat> getNamedOutputFormatClass(
 JobConf conf, String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getClass(MO_PREFIX + namedOutput + FORMAT, null,
  OutputFormat.class);
}

代码示例来源：origin: org.apache.hadoop/hadoop-mapred

/**
 * Returns if a named output is multiple.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return <code>true</code> if the name output is multi, <code>false</code>
 *         if it is single. If the name output is not defined it returns
 *         <code>false</code>
 */
public static boolean isMultiNamedOutput(JobConf conf, String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getBoolean(MO_PREFIX + namedOutput + MULTI, false);
}

代码示例来源：origin: org.apache.hadoop/hadoop-mapred

/**
 * Returns the key class for a named output.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return class for the named output key
 */
public static Class<? extends WritableComparable> getNamedOutputKeyClass(JobConf conf,
                       String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getClass(MO_PREFIX + namedOutput + KEY, null,
 WritableComparable.class);
}

代码示例来源：origin: io.prestosql.hadoop/hadoop-apache

/**
 * Returns if a named output is multiple.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return <code>true</code> if the name output is multi, <code>false</code>
 *         if it is single. If the name output is not defined it returns
 *         <code>false</code>
 */
public static boolean isMultiNamedOutput(JobConf conf, String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getBoolean(MO_PREFIX + namedOutput + MULTI, false);
}

代码示例来源：origin: io.prestosql.hadoop/hadoop-apache

/**
 * Returns the value class for a named output.
 *
 * @param conf        job conf
 * @param namedOutput named output
 * @return class of named output value
 */
public static Class<?> getNamedOutputValueClass(JobConf conf,
                        String namedOutput) {
 checkNamedOutput(conf, namedOutput, false);
 return conf.getClass(MO_PREFIX + namedOutput + VALUE, null,
  Object.class);
}

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