Java CqlPagingInputFormat类代码示例

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本文整理汇总了Java中org.apache.cassandra.hadoop.cql3.CqlPagingInputFormat类的典型用法代码示例。如果您正苦于以下问题：Java CqlPagingInputFormat类的具体用法？Java CqlPagingInputFormat怎么用？Java CqlPagingInputFormat使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

CqlPagingInputFormat类属于org.apache.cassandra.hadoop.cql3包，在下文中一共展示了CqlPagingInputFormat类的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Java代码示例。

示例1: run

import org.apache.cassandra.hadoop.cql3.CqlPagingInputFormat; //导入依赖的package包/类
public int run(String[] args) throws Exception
{
    Job job = new Job(getConf(), "wordcountcounters");
    job.setJarByClass(WordCountCounters.class);
    job.setMapperClass(SumMapper.class);

    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(LongWritable.class);
    FileOutputFormat.setOutputPath(job, new Path(OUTPUT_PATH_PREFIX));

    job.setInputFormatClass(CqlPagingInputFormat.class);

    ConfigHelper.setInputRpcPort(job.getConfiguration(), "9160");
    ConfigHelper.setInputInitialAddress(job.getConfiguration(), "localhost");
    ConfigHelper.setInputPartitioner(job.getConfiguration(), "Murmur3Partitioner");
    ConfigHelper.setInputColumnFamily(job.getConfiguration(), WordCount.KEYSPACE, WordCount.OUTPUT_COLUMN_FAMILY);

    CqlConfigHelper.setInputCQLPageRowSize(job.getConfiguration(), "3");

    job.waitForCompletion(true);
    return 0;
}

开发者ID:pgaref，项目名称:ACaZoo，代码行数:23，代码来源:WordCountCounters.java

示例2: run

import org.apache.cassandra.hadoop.cql3.CqlPagingInputFormat; //导入依赖的package包/类
public int run(String[] args) throws Exception
{
    String inputMapperType = "native";
    if (args != null && args[0].startsWith(INPUT_MAPPER_VAR))
    {
        String[] arg0 = args[0].split("=");
        if (arg0 != null && arg0.length == 2)
            inputMapperType = arg0[1];
    }
    Job job = new Job(getConf(), "wordcountcounters");

    job.setCombinerClass(ReducerToFilesystem.class);
    job.setReducerClass(ReducerToFilesystem.class);
    job.setJarByClass(WordCountCounters.class); 

    ConfigHelper.setInputInitialAddress(job.getConfiguration(), "localhost");
    ConfigHelper.setInputPartitioner(job.getConfiguration(), "Murmur3Partitioner");
    ConfigHelper.setInputColumnFamily(job.getConfiguration(), WordCount.KEYSPACE, WordCount.OUTPUT_COLUMN_FAMILY);

    CqlConfigHelper.setInputCQLPageRowSize(job.getConfiguration(), "3");
    if ("native".equals(inputMapperType))
    {
        job.setMapperClass(SumNativeMapper.class);
        job.setInputFormatClass(CqlInputFormat.class);
        CqlConfigHelper.setInputCql(job.getConfiguration(), "select * from " + WordCount.OUTPUT_COLUMN_FAMILY + " where token(word) > ? and token(word) <= ? allow filtering");
    }
    else
    {
        job.setMapperClass(SumMapper.class);
        job.setInputFormatClass(CqlPagingInputFormat.class);
        ConfigHelper.setInputRpcPort(job.getConfiguration(), "9160");
    }

    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(LongWritable.class);
    FileOutputFormat.setOutputPath(job, new Path(OUTPUT_PATH_PREFIX));
    job.waitForCompletion(true);
    return 0;
}

开发者ID:daidong，项目名称:GraphTrek，代码行数:40，代码来源:WordCountCounters.java

示例3: run

import org.apache.cassandra.hadoop.cql3.CqlPagingInputFormat; //导入依赖的package包/类
public int run(String[] args) throws Exception
{
    String outputReducerType = "filesystem";
    if (args != null && args[0].startsWith(OUTPUT_REDUCER_VAR))
    {
        String[] s = args[0].split("=");
        if (s != null && s.length == 2)
            outputReducerType = s[1];
    }
    logger.info("output reducer type: " + outputReducerType);

    Job job = new Job(getConf(), "wordcount");
    job.setJarByClass(WordCount.class);
    job.setMapperClass(TokenizerMapper.class);

    if (outputReducerType.equalsIgnoreCase("filesystem"))
    {
        job.setCombinerClass(ReducerToFilesystem.class);
        job.setReducerClass(ReducerToFilesystem.class);
        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(IntWritable.class);
        FileOutputFormat.setOutputPath(job, new Path(OUTPUT_PATH_PREFIX));
    }
    else
    {
        job.setReducerClass(ReducerToCassandra.class);

        job.setMapOutputKeyClass(Text.class);
        job.setMapOutputValueClass(IntWritable.class);
        job.setOutputKeyClass(Map.class);
        job.setOutputValueClass(List.class);

        job.setOutputFormatClass(CqlOutputFormat.class);

        ConfigHelper.setOutputColumnFamily(job.getConfiguration(), KEYSPACE, OUTPUT_COLUMN_FAMILY);
        job.getConfiguration().set(PRIMARY_KEY, "word,sum");
        String query = "UPDATE " + KEYSPACE + "." + OUTPUT_COLUMN_FAMILY +
                       " SET count_num = ? ";
        CqlConfigHelper.setOutputCql(job.getConfiguration(), query);
        ConfigHelper.setOutputInitialAddress(job.getConfiguration(), "localhost");
        ConfigHelper.setOutputPartitioner(job.getConfiguration(), "Murmur3Partitioner");
    }

    job.setInputFormatClass(CqlPagingInputFormat.class);

    ConfigHelper.setInputRpcPort(job.getConfiguration(), "9160");
    ConfigHelper.setInputInitialAddress(job.getConfiguration(), "localhost");
    ConfigHelper.setInputColumnFamily(job.getConfiguration(), KEYSPACE, COLUMN_FAMILY);
    ConfigHelper.setInputPartitioner(job.getConfiguration(), "Murmur3Partitioner");

    CqlConfigHelper.setInputCQLPageRowSize(job.getConfiguration(), "3");
    //this is the user defined filter clauses, you can comment it out if you want count all titles
    CqlConfigHelper.setInputWhereClauses(job.getConfiguration(), "title='A'");
    job.waitForCompletion(true);
    return 0;
}

开发者ID:pgaref，项目名称:ACaZoo，代码行数:57，代码来源:WordCount.java

注：本文中的org.apache.cassandra.hadoop.cql3.CqlPagingInputFormat类示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。