public void testSkewedJoinWithNoProperties() throws IOException {
pigServer = new PigServer(ExecType.MAPREDUCE, cluster.getProperties());
pigServer.registerQuery("A = LOAD '" + INPUT_FILE1 + "' as (id, name, n);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE2 + "' as (id, name);");
try {
DataBag dbfrj = BagFactory.getInstance().newDefaultBag();
DataBag dbshj = BagFactory.getInstance().newDefaultBag();
{
pigServer.registerQuery(
"C = join A by (id, name), B by (id, name) using \"skewed\" parallel 5;");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("E = join A by(id, name), B by (id, name);");
Iterator<Tuple> iter = pigServer.openIterator("E");
while (iter.hasNext()) {
dbshj.add(iter.next());
}
}
Assert.assertTrue(dbfrj.size() > 0 && dbshj.size() > 0);
Assert.assertEquals(true, TestHelper.compareBags(dbfrj, dbshj));
} catch (Exception e) {
fail(e.getMessage());
}
}
public TestSkewedJoin() throws ExecException, IOException {
pigServer = new PigServer(ExecType.MAPREDUCE, cluster.getProperties());
// pigServer = new PigServer(ExecType.LOCAL);
pigServer.getPigContext().getProperties().setProperty("pig.skewedjoin.reduce.maxtuple", "5");
pigServer.getPigContext().getProperties().setProperty("pig.skewedjoin.reduce.memusage", "0.01");
}
