Examples of org.apache.accumulo.core.client.mock.MockInstance

Package org.apache.accumulo.core.client.mock

Examples of org.apache.accumulo.core.client.mock.MockInstance

org.apache.accumulo.core.client.mock.MockInstance
Mock Accumulo provides an in memory implementation of the Accumulo client API. It is possible that the behavior of this implementation may differ subtly from the behavior of Accumulo. This could result in unit tests that pass on Mock Accumulo and fail on Accumulo or visa-versa. Documenting the differences would be difficult and is not done.
An alternative to Mock Accumulo called MiniAccumuloCluster was introduced in Accumulo 1.5. MiniAccumuloCluster spins up actual Accumulo server processes, can be used for unit testing, and its behavior should match Accumulo. The drawback of MiniAccumuloCluster is that it starts more slowly than Mock Accumulo.

    
  }
  
  // simulate a merge happening while iterating over tablets
  public void testMerge() throws Exception {
    MockInstance mi = new MockInstance();
    Connector conn = mi.getConnector("", new PasswordToken(""));
    
    KeyExtent ke1 = new KeyExtent(new Text("0"), new Text("m"), null);
    Mutation mut1 = ke1.getPrevRowUpdateMutation();
    Constants.METADATA_DIRECTORY_COLUMN.put(mut1, new Value("/d1".getBytes()));

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import org.apache.hadoop.io.Text;


public class CloneTest extends TestCase {
  
  public void testNoFiles() throws Exception {
    MockInstance mi = new MockInstance();
    Connector conn = mi.getConnector("", new PasswordToken(""));
    
    KeyExtent ke = new KeyExtent(new Text("0"), null, null);
    Mutation mut = ke.getPrevRowUpdateMutation();
    
    Constants.METADATA_TIME_COLUMN.put(mut, new Value("M0".getBytes()));

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    // scan tables metadata entries and confirm the same
    
  }
  
  public void testFilesChange() throws Exception {
    MockInstance mi = new MockInstance();
    Connector conn = mi.getConnector("", new PasswordToken(""));
    
    KeyExtent ke = new KeyExtent(new Text("0"), null, null);
    Mutation mut = ke.getPrevRowUpdateMutation();
    
    Constants.METADATA_TIME_COLUMN.put(mut, new Value("M0".getBytes()));

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  }
  
  // test split where files of children are the same
  public void testSplit1() throws Exception {
    MockInstance mi = new MockInstance();
    Connector conn = mi.getConnector("", new PasswordToken(""));
    
    BatchWriter bw1 = conn.createBatchWriter(Constants.METADATA_TABLE_NAME, new BatchWriterConfig());
    
    bw1.addMutation(createTablet("0", null, null, "/default_tablet", "/default_tablet/0_0.rf"));

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    assertTrue(files.contains("../0/default_tablet/0_0.rf"));
  }
  
  // test split where files of children differ... like majc and split occurred
  public void testSplit2() throws Exception {
    MockInstance mi = new MockInstance();
    Connector conn = mi.getConnector("", new PasswordToken(""));
    
    BatchWriter bw1 = conn.createBatchWriter(Constants.METADATA_TABLE_NAME, new BatchWriterConfig());
    
    bw1.addMutation(createTablet("0", null, null, "/default_tablet", "/default_tablet/0_0.rf"));

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    return mut;
  }
  
  // test two tablets splitting into four
  public void testSplit3() throws Exception {
    MockInstance mi = new MockInstance();
    Connector conn = mi.getConnector("", new PasswordToken(""));
    
    BatchWriter bw1 = conn.createBatchWriter(Constants.METADATA_TABLE_NAME, new BatchWriterConfig());
    
    bw1.addMutation(createTablet("0", "m", null, "/d1", "/d1/file1"));
    bw1.addMutation(createTablet("0", null, "m", "/d2", "/d2/file2"));

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  }
  
  // test cloned marker
  public void testClonedMarker() throws Exception {
    
    MockInstance mi = new MockInstance();
    Connector conn = mi.getConnector("", new PasswordToken(""));
    
    BatchWriter bw1 = conn.createBatchWriter(Constants.METADATA_TABLE_NAME, new BatchWriterConfig());
    
    bw1.addMutation(createTablet("0", "m", null, "/d1", "/d1/file1"));
    bw1.addMutation(createTablet("0", null, "m", "/d2", "/d2/file2"));

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    assertTrue(files.contains("../0/d4/file3"));
  }
  
  // test two tablets splitting into four
  public void testMerge() throws Exception {
    MockInstance mi = new MockInstance();
    Connector conn = mi.getConnector("", new PasswordToken(""));
    
    BatchWriter bw1 = conn.createBatchWriter(Constants.METADATA_TABLE_NAME, new BatchWriterConfig());
    
    bw1.addMutation(createTablet("0", "m", null, "/d1", "/d1/file1"));
    bw1.addMutation(createTablet("0", null, "m", "/d2", "/d2/file2"));

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    bw.close();
  }
  
  @Test
  public void test() throws Exception {
    Instance instance = new MockInstance();
    Connector connector = instance.getConnector("root", new PasswordToken(""));
    BatchWriter bw = connector.createBatchWriter("!METADATA", new BatchWriterConfig());
    
    // Create a fake METADATA table with these splits
    String splits[] = {"a", "e", "j", "o", "t", "z"};
    // create metadata for a table "t" with the splits above

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    }
  }


  @Test
  public void testMap() throws Exception {
    MockInstance mockInstance = new MockInstance(INSTANCE_NAME);
    Connector c = mockInstance.getConnector("root", new PasswordToken(""));
    c.tableOperations().create(TEST_TABLE_1);
    BatchWriter bw = c.createBatchWriter(TEST_TABLE_1, new BatchWriterConfig());
    for (int i = 0; i < 100; i++) {
      Mutation m = new Mutation(new Text(String.format("%09x", i + 1)));
      m.put(new Text(), new Text(), new Value(String.format("%09x", i).getBytes()));

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