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;
}
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;
}
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;
}