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An input format that returns a single split with a single row.

Can be used from hive like this.

client.execute ( "add jar "+jarFile);
client.execute("create table  dual  (fake string) "+
        "STORED AS INPUTFORMAT 'com.m6d.dualinputformat.DualInputFormat'"+
        "OUTPUTFORMAT ''");
client.execute("load data local inpath '" + p.toString() + "' into table dual");
client.execute("select count(1) as cnt from dual");
String row = client.fetchOne();
assertEquals( "1", row);

client.execute("select * from dual");
row = client.fetchOne();
assertEquals( "", row);

client.execute("drop table dual");
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