Examples with HashJoinExample org.apache.tez.examples.HashJoinExample used on opensource projects

Example 6 with HashJoinExample

use of org.apache.tez.examples.HashJoinExample in project tez by apache.

the class TestTezJobs method testHashJoinExampleDisableSplitGrouping.

@Test(timeout = 60000)
public void testHashJoinExampleDisableSplitGrouping() throws Exception {
    HashJoinExample hashJoinExample = new HashJoinExample();
    hashJoinExample.setConf(conf);
    Path stagingDirPath = new Path(TEST_ROOT_DIR + "/tmp/tez-staging-dir");
    Path inPath1 = new Path(TEST_ROOT_DIR + "/tmp/hashJoin/inPath1");
    Path inPath2 = new Path(TEST_ROOT_DIR + "/tmp/hashJoin/inPath2");
    Path outPath = new Path(TEST_ROOT_DIR + "/tmp/hashJoin/outPath");
    localFs.delete(outPath, true);
    localFs.mkdirs(inPath1);
    localFs.mkdirs(inPath2);
    localFs.mkdirs(stagingDirPath);
    Set<String> expectedResult = new HashSet<String>();
    FSDataOutputStream out1 = localFs.create(new Path(inPath1, "file"));
    FSDataOutputStream out2 = localFs.create(new Path(inPath2, "file"));
    BufferedWriter writer1 = new BufferedWriter(new OutputStreamWriter(out1));
    BufferedWriter writer2 = new BufferedWriter(new OutputStreamWriter(out2));
    for (int i = 0; i < 20; i++) {
        String term = "term" + i;
        writer1.write(term);
        writer1.newLine();
        if (i % 2 == 0) {
            writer2.write(term);
            writer2.newLine();
            expectedResult.add(term);
        }
    }
    writer1.close();
    writer2.close();
    out1.close();
    out2.close();
    String[] args = new String[] { "-D" + TezConfiguration.TEZ_AM_STAGING_DIR + "=" + stagingDirPath.toString(), "-counter", "-local", "-disableSplitGrouping", inPath1.toString(), inPath2.toString(), "1", outPath.toString() };
    assertEquals(0, hashJoinExample.run(args));
    FileStatus[] statuses = localFs.listStatus(outPath, new PathFilter() {

        public boolean accept(Path p) {
            String name = p.getName();
            return !name.startsWith("_") && !name.startsWith(".");
        }
    });
    assertEquals(1, statuses.length);
    FSDataInputStream inStream = localFs.open(statuses[0].getPath());
    BufferedReader reader = new BufferedReader(new InputStreamReader(inStream));
    String line;
    while ((line = reader.readLine()) != null) {
        assertTrue(expectedResult.remove(line));
    }
    reader.close();
    inStream.close();
    assertEquals(0, expectedResult.size());
}