Example usage for org.apache.hadoop.mapred.lib.db DBInputFormat setInput

Introduction

In this page you can find the example usage for org.apache.hadoop.mapred.lib.db DBInputFormat setInput.

Prototype

public static void setInput(JobConf job, Class<? extends DBWritable> inputClass, String inputQuery,
        String inputCountQuery) 

Source Link

Document

Initializes the map-part of the job with the appropriate input settings.

Usage

From source file:co.nubetech.apache.hadoop.mapred.DataDrivenDBInputFormat.java

License:Apache License

/**
 * setInput() takes a custom query and a separate "bounding query" to use
 * instead of the custom "count query" used by DBInputFormat.
 *//*from   w  ww.j  av a2s . co m*/
public static void setInput(Job job, Class<? extends DBWritable> inputClass, String inputQuery,
        String inputBoundingQuery) {
    DBInputFormat.setInput(job, inputClass, inputQuery, "");
    job.getConfiguration().set(DBConfiguration.INPUT_BOUNDING_QUERY, inputBoundingQuery);
    job.setInputFormatClass(DataDrivenDBInputFormat.class);
}

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From source file:co.nubetech.apache.hadoop.mapred.DBQueryInputFormat.java

License:Apache License

/**
 * setInput() takes a custom query and a separate "bounding query" to use
 * instead of the custom "count query" used by DBInputFormat.
 *///from  w w  w.java 2 s.c o m
public static void setInput(JobConf job, String inputQuery, String inputBoundingQuery, ArrayList params)
        throws IOException {
    DBInputFormat.setInput(job, GenericDBWritable.class, inputQuery, "");

    if (inputBoundingQuery != null) {
        job.set(DBConfiguration.INPUT_BOUNDING_QUERY, inputBoundingQuery);
    }
    if (params != null) {
        DefaultStringifier<ArrayList> stringifier = new DefaultStringifier<ArrayList>(job, ArrayList.class);
        job.set(HIHOConf.QUERY_PARAMS, stringifier.toString(params));
        logger.debug("Converted params and saved them into config");
    }
    job.setInputFormat(DBQueryInputFormat.class);
}

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