Esempio n. 1
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  @Test
  public void testSplitQuery() throws Exception {
    // Insert 20 rows per shard
    for (String shardName : testEnv.shardKidMap.keySet()) {
      Util.insertRowsInShard(testEnv, shardName, 20);
    }
    Util.waitForTablet("rdonly", 40, 3, testEnv);
    VtGate vtgate = VtGate.connect("localhost:" + testEnv.port, 0);
    Map<Query, Long> queries =
        vtgate.splitQuery("test_keyspace", "select id,keyspace_id from vtgate_test", 1);
    vtgate.close();

    // Verify 2 splits, one per shard
    Assert.assertEquals(2, queries.size());
    Set<String> shardsInSplits = new HashSet<>();
    for (Query q : queries.keySet()) {
      Assert.assertEquals("select id,keyspace_id from vtgate_test", q.getSql());
      Assert.assertEquals("test_keyspace", q.getKeyspace());
      Assert.assertEquals("rdonly", q.getTabletType());
      Assert.assertEquals(0, q.getBindVars().size());
      Assert.assertEquals(null, q.getKeyspaceIds());
      String start = Hex.encodeHexString(q.getKeyRanges().get(0).get("Start"));
      String end = Hex.encodeHexString(q.getKeyRanges().get(0).get("End"));
      shardsInSplits.add(start + "-" + end);
    }

    // Verify the keyrange queries in splits cover the entire keyspace
    Assert.assertTrue(shardsInSplits.containsAll(testEnv.shardKidMap.keySet()));
  }
Esempio n. 2
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  @Test
  public void testSplitQueryMultipleSplitsPerShard() throws Exception {
    int rowCount = 30;
    Util.insertRows(testEnv, 1, 30);
    List<String> expectedSqls =
        Lists.newArrayList(
            "select id, keyspace_id from vtgate_test where id < 10",
            "select id, keyspace_id from vtgate_test where id < 11",
            "select id, keyspace_id from vtgate_test where id >= 10 and id < 19",
            "select id, keyspace_id from vtgate_test where id >= 11 and id < 19",
            "select id, keyspace_id from vtgate_test where id >= 19",
            "select id, keyspace_id from vtgate_test where id >= 19");
    Util.waitForTablet("rdonly", rowCount, 3, testEnv);
    VtGate vtgate = VtGate.connect("localhost:" + testEnv.port, 0);
    int splitCount = 6;
    Map<Query, Long> queries =
        vtgate.splitQuery("test_keyspace", "select id,keyspace_id from vtgate_test", splitCount);
    vtgate.close();

    // Verify 6 splits, 3 per shard
    Assert.assertEquals(splitCount, queries.size());
    Set<String> shardsInSplits = new HashSet<>();
    for (Query q : queries.keySet()) {
      String sql = q.getSql();
      Assert.assertTrue(expectedSqls.contains(sql));
      expectedSqls.remove(sql);
      Assert.assertEquals("test_keyspace", q.getKeyspace());
      Assert.assertEquals("rdonly", q.getTabletType());
      Assert.assertEquals(0, q.getBindVars().size());
      Assert.assertEquals(null, q.getKeyspaceIds());
      String start = Hex.encodeHexString(q.getKeyRanges().get(0).get("Start"));
      String end = Hex.encodeHexString(q.getKeyRanges().get(0).get("End"));
      shardsInSplits.add(start + "-" + end);
    }

    // Verify the keyrange queries in splits cover the entire keyspace
    Assert.assertTrue(shardsInSplits.containsAll(testEnv.shardKidMap.keySet()));
    Assert.assertTrue(expectedSqls.size() == 0);
  }