@Test
  public void testFindNextToCompact() throws Exception {
    CompactionRequest rqst = new CompactionRequest("foo", "bar", CompactionType.MINOR);
    rqst.setPartitionname("ds=today");
    txnHandler.compact(rqst);
    long now = System.currentTimeMillis();
    CompactionInfo ci = txnHandler.findNextToCompact("fred");
    assertNotNull(ci);
    assertEquals("foo", ci.dbname);
    assertEquals("bar", ci.tableName);
    assertEquals("ds=today", ci.partName);
    assertEquals(CompactionType.MINOR, ci.type);
    assertNull(ci.runAs);
    assertNull(txnHandler.findNextToCompact("fred"));

    txnHandler.setRunAs(ci.id, "bob");

    ShowCompactResponse rsp = txnHandler.showCompact(new ShowCompactRequest());
    List<ShowCompactResponseElement> compacts = rsp.getCompacts();
    assertEquals(1, compacts.size());
    ShowCompactResponseElement c = compacts.get(0);
    assertEquals("foo", c.getDbname());
    assertEquals("bar", c.getTablename());
    assertEquals("ds=today", c.getPartitionname());
    assertEquals(CompactionType.MINOR, c.getType());
    assertEquals("working", c.getState());
    assertTrue(c.getStart() - 5000 < now && c.getStart() + 5000 > now);
    assertEquals("fred", c.getWorkerid());
    assertEquals("bob", c.getRunAs());
  }
  @Test
  public void testFindPotentialCompactions() throws Exception {
    // Test that committing unlocks
    long txnid = openTxn();
    LockComponent comp = new LockComponent(LockType.SHARED_WRITE, LockLevel.DB, "mydb");
    comp.setTablename("mytable");
    comp.setOperationType(DataOperationType.UPDATE);
    List<LockComponent> components = new ArrayList<LockComponent>(1);
    components.add(comp);
    comp = new LockComponent(LockType.SHARED_WRITE, LockLevel.DB, "mydb");
    comp.setTablename("yourtable");
    comp.setPartitionname("mypartition");
    comp.setOperationType(DataOperationType.UPDATE);
    components.add(comp);
    LockRequest req = new LockRequest(components, "me", "localhost");
    req.setTxnid(txnid);
    LockResponse res = txnHandler.lock(req);
    assertTrue(res.getState() == LockState.ACQUIRED);
    txnHandler.commitTxn(new CommitTxnRequest(txnid));
    assertEquals(0, txnHandler.numLocksInLockTable());

    Set<CompactionInfo> potentials = txnHandler.findPotentialCompactions(100);
    assertEquals(2, potentials.size());
    boolean sawMyTable = false, sawYourTable = false;
    for (CompactionInfo ci : potentials) {
      sawMyTable |=
          (ci.dbname.equals("mydb") && ci.tableName.equals("mytable") && ci.partName == null);
      sawYourTable |=
          (ci.dbname.equals("mydb")
              && ci.tableName.equals("yourtable")
              && ci.partName.equals("mypartition"));
    }
    assertTrue(sawMyTable);
    assertTrue(sawYourTable);
  }
  @Test
  public void testFindNextToClean() throws Exception {
    CompactionRequest rqst = new CompactionRequest("foo", "bar", CompactionType.MINOR);
    rqst.setPartitionname("ds=today");
    txnHandler.compact(rqst);
    assertEquals(0, txnHandler.findReadyToClean().size());
    CompactionInfo ci = txnHandler.findNextToCompact("fred");
    assertNotNull(ci);

    assertEquals(0, txnHandler.findReadyToClean().size());
    txnHandler.markCompacted(ci);
    assertNull(txnHandler.findNextToCompact("fred"));

    List<CompactionInfo> toClean = txnHandler.findReadyToClean();
    assertEquals(1, toClean.size());
    assertNull(txnHandler.findNextToCompact("fred"));

    ShowCompactResponse rsp = txnHandler.showCompact(new ShowCompactRequest());
    List<ShowCompactResponseElement> compacts = rsp.getCompacts();
    assertEquals(1, compacts.size());
    ShowCompactResponseElement c = compacts.get(0);
    assertEquals("foo", c.getDbname());
    assertEquals("bar", c.getTablename());
    assertEquals("ds=today", c.getPartitionname());
    assertEquals(CompactionType.MINOR, c.getType());
    assertEquals("ready for cleaning", c.getState());
    assertNull(c.getWorkerid());
  }
  @Test
  public void testRevokeFromLocalWorkers() throws Exception {
    CompactionRequest rqst = new CompactionRequest("foo", "bar", CompactionType.MINOR);
    txnHandler.compact(rqst);
    rqst = new CompactionRequest("foo", "baz", CompactionType.MINOR);
    txnHandler.compact(rqst);
    rqst = new CompactionRequest("foo", "bazzoo", CompactionType.MINOR);
    txnHandler.compact(rqst);
    assertNotNull(txnHandler.findNextToCompact("fred-193892"));
    assertNotNull(txnHandler.findNextToCompact("bob-193892"));
    assertNotNull(txnHandler.findNextToCompact("fred-193893"));
    txnHandler.revokeFromLocalWorkers("fred");

    ShowCompactResponse rsp = txnHandler.showCompact(new ShowCompactRequest());
    List<ShowCompactResponseElement> compacts = rsp.getCompacts();
    assertEquals(3, compacts.size());
    boolean sawWorkingBob = false;
    int initiatedCount = 0;
    for (ShowCompactResponseElement c : compacts) {
      if (c.getState().equals("working")) {
        assertEquals("bob-193892", c.getWorkerid());
        sawWorkingBob = true;
      } else if (c.getState().equals("initiated")) {
        initiatedCount++;
      } else {
        fail("Unexpected state");
      }
    }
    assertTrue(sawWorkingBob);
    assertEquals(2, initiatedCount);
  }
  @Test
  public void addDynamicPartitions() throws Exception {
    String dbName = "default";
    String tableName = "adp_table";
    OpenTxnsResponse openTxns = txnHandler.openTxns(new OpenTxnRequest(1, "me", "localhost"));
    long txnId = openTxns.getTxn_ids().get(0);
    // lock a table, as in dynamic partitions
    LockComponent lc = new LockComponent(LockType.SHARED_WRITE, LockLevel.TABLE, dbName);
    lc.setTablename(tableName);
    DataOperationType dop = DataOperationType.UPDATE;
    lc.setOperationType(dop);
    LockRequest lr = new LockRequest(Arrays.asList(lc), "me", "localhost");
    lr.setTxnid(txnId);
    LockResponse lock = txnHandler.lock(lr);
    assertEquals(LockState.ACQUIRED, lock.getState());

    AddDynamicPartitions adp =
        new AddDynamicPartitions(
            txnId, dbName, tableName, Arrays.asList("ds=yesterday", "ds=today"));
    adp.setOperationType(dop);
    txnHandler.addDynamicPartitions(adp);
    txnHandler.commitTxn(new CommitTxnRequest(txnId));

    Set<CompactionInfo> potentials = txnHandler.findPotentialCompactions(1000);
    assertEquals(2, potentials.size());
    SortedSet<CompactionInfo> sorted = new TreeSet<CompactionInfo>(potentials);

    int i = 0;
    for (CompactionInfo ci : sorted) {
      assertEquals(dbName, ci.dbname);
      assertEquals(tableName, ci.tableName);
      switch (i++) {
        case 0:
          assertEquals("ds=today", ci.partName);
          break;
        case 1:
          assertEquals("ds=yesterday", ci.partName);
          break;
        default:
          throw new RuntimeException("What?");
      }
    }
  }
  @Test
  public void testFindNextToCompact2() throws Exception {
    CompactionRequest rqst = new CompactionRequest("foo", "bar", CompactionType.MINOR);
    rqst.setPartitionname("ds=today");
    txnHandler.compact(rqst);

    rqst = new CompactionRequest("foo", "bar", CompactionType.MINOR);
    rqst.setPartitionname("ds=yesterday");
    txnHandler.compact(rqst);

    long now = System.currentTimeMillis();
    boolean expectToday = false;
    CompactionInfo ci = txnHandler.findNextToCompact("fred");
    assertNotNull(ci);
    assertEquals("foo", ci.dbname);
    assertEquals("bar", ci.tableName);
    if ("ds=today".equals(ci.partName)) expectToday = false;
    else if ("ds=yesterday".equals(ci.partName)) expectToday = true;
    else fail("partition name should have been today or yesterday but was " + ci.partName);
    assertEquals(CompactionType.MINOR, ci.type);

    ci = txnHandler.findNextToCompact("fred");
    assertNotNull(ci);
    assertEquals("foo", ci.dbname);
    assertEquals("bar", ci.tableName);
    if (expectToday) assertEquals("ds=today", ci.partName);
    else assertEquals("ds=yesterday", ci.partName);
    assertEquals(CompactionType.MINOR, ci.type);

    assertNull(txnHandler.findNextToCompact("fred"));

    ShowCompactResponse rsp = txnHandler.showCompact(new ShowCompactRequest());
    List<ShowCompactResponseElement> compacts = rsp.getCompacts();
    assertEquals(2, compacts.size());
    for (ShowCompactResponseElement e : compacts) {
      assertEquals("working", e.getState());
      assertTrue(e.getStart() - 5000 < now && e.getStart() + 5000 > now);
      assertEquals("fred", e.getWorkerid());
    }
  }
  @Test
  public void testRevokeTimedOutWorkers() throws Exception {
    CompactionRequest rqst = new CompactionRequest("foo", "bar", CompactionType.MINOR);
    txnHandler.compact(rqst);
    rqst = new CompactionRequest("foo", "baz", CompactionType.MINOR);
    txnHandler.compact(rqst);

    assertNotNull(txnHandler.findNextToCompact("fred-193892"));
    Thread.sleep(200);
    assertNotNull(txnHandler.findNextToCompact("fred-193892"));
    txnHandler.revokeTimedoutWorkers(100);

    ShowCompactResponse rsp = txnHandler.showCompact(new ShowCompactRequest());
    List<ShowCompactResponseElement> compacts = rsp.getCompacts();
    assertEquals(2, compacts.size());
    boolean sawWorking = false, sawInitiated = false;
    for (ShowCompactResponseElement c : compacts) {
      if (c.getState().equals("working")) sawWorking = true;
      else if (c.getState().equals("initiated")) sawInitiated = true;
      else fail("Unexpected state");
    }
    assertTrue(sawWorking);
    assertTrue(sawInitiated);
  }
 private long openTxn() throws MetaException {
   List<Long> txns = txnHandler.openTxns(new OpenTxnRequest(1, "me", "localhost")).getTxn_ids();
   return txns.get(0);
 }
  @Test
  public void testMarkCleanedCleansTxnsAndTxnComponents() throws Exception {
    long txnid = openTxn();
    LockComponent comp = new LockComponent(LockType.SHARED_WRITE, LockLevel.DB, "mydb");
    comp.setTablename("mytable");
    comp.setOperationType(DataOperationType.INSERT);
    List<LockComponent> components = new ArrayList<LockComponent>(1);
    components.add(comp);
    LockRequest req = new LockRequest(components, "me", "localhost");
    req.setTxnid(txnid);
    LockResponse res = txnHandler.lock(req);
    assertTrue(res.getState() == LockState.ACQUIRED);
    txnHandler.abortTxn(new AbortTxnRequest(txnid));

    txnid = openTxn();
    comp = new LockComponent(LockType.SHARED_WRITE, LockLevel.DB, "mydb");
    comp.setTablename("yourtable");
    comp.setOperationType(DataOperationType.DELETE);
    components = new ArrayList<LockComponent>(1);
    components.add(comp);
    req = new LockRequest(components, "me", "localhost");
    req.setTxnid(txnid);
    res = txnHandler.lock(req);
    assertTrue(res.getState() == LockState.ACQUIRED);
    txnHandler.abortTxn(new AbortTxnRequest(txnid));

    txnid = openTxn();
    comp = new LockComponent(LockType.SHARED_WRITE, LockLevel.DB, "mydb");
    comp.setTablename("foo");
    comp.setPartitionname("bar");
    comp.setOperationType(DataOperationType.UPDATE);
    components = new ArrayList<LockComponent>(1);
    components.add(comp);
    req = new LockRequest(components, "me", "localhost");
    req.setTxnid(txnid);
    res = txnHandler.lock(req);
    assertTrue(res.getState() == LockState.ACQUIRED);

    comp = new LockComponent(LockType.SHARED_WRITE, LockLevel.DB, "mydb");
    comp.setTablename("foo");
    comp.setPartitionname("baz");
    comp.setOperationType(DataOperationType.UPDATE);
    components = new ArrayList<LockComponent>(1);
    components.add(comp);
    req = new LockRequest(components, "me", "localhost");
    req.setTxnid(txnid);
    res = txnHandler.lock(req);
    assertTrue(res.getState() == LockState.ACQUIRED);
    txnHandler.abortTxn(new AbortTxnRequest(txnid));

    CompactionInfo ci = new CompactionInfo();

    // Now clean them and check that they are removed from the count.
    CompactionRequest rqst = new CompactionRequest("mydb", "mytable", CompactionType.MAJOR);
    txnHandler.compact(rqst);
    assertEquals(0, txnHandler.findReadyToClean().size());
    ci = txnHandler.findNextToCompact("fred");
    assertNotNull(ci);
    txnHandler.markCompacted(ci);

    List<CompactionInfo> toClean = txnHandler.findReadyToClean();
    assertEquals(1, toClean.size());
    txnHandler.markCleaned(ci);

    // Check that we are cleaning up the empty aborted transactions
    GetOpenTxnsResponse txnList = txnHandler.getOpenTxns();
    assertEquals(3, txnList.getOpen_txnsSize());
    txnHandler.cleanEmptyAbortedTxns();
    txnList = txnHandler.getOpenTxns();
    assertEquals(2, txnList.getOpen_txnsSize());

    rqst = new CompactionRequest("mydb", "foo", CompactionType.MAJOR);
    rqst.setPartitionname("bar");
    txnHandler.compact(rqst);
    assertEquals(0, txnHandler.findReadyToClean().size());
    ci = txnHandler.findNextToCompact("fred");
    assertNotNull(ci);
    txnHandler.markCompacted(ci);

    toClean = txnHandler.findReadyToClean();
    assertEquals(1, toClean.size());
    txnHandler.markCleaned(ci);

    txnHandler.openTxns(new OpenTxnRequest(1, "me", "localhost"));
    txnHandler.cleanEmptyAbortedTxns();
    txnList = txnHandler.getOpenTxns();
    assertEquals(3, txnList.getOpen_txnsSize());
  }
  @Test
  public void testMarkCleaned() throws Exception {
    CompactionRequest rqst = new CompactionRequest("foo", "bar", CompactionType.MINOR);
    rqst.setPartitionname("ds=today");
    txnHandler.compact(rqst);
    assertEquals(0, txnHandler.findReadyToClean().size());
    CompactionInfo ci = txnHandler.findNextToCompact("fred");
    assertNotNull(ci);

    assertEquals(0, txnHandler.findReadyToClean().size());
    txnHandler.markCompacted(ci);
    assertNull(txnHandler.findNextToCompact("fred"));

    List<CompactionInfo> toClean = txnHandler.findReadyToClean();
    assertEquals(1, toClean.size());
    assertNull(txnHandler.findNextToCompact("fred"));
    txnHandler.markCleaned(ci);
    assertNull(txnHandler.findNextToCompact("fred"));
    assertEquals(0, txnHandler.findReadyToClean().size());

    ShowCompactResponse rsp = txnHandler.showCompact(new ShowCompactRequest());
    assertEquals(1, rsp.getCompactsSize());
    assertTrue(TxnHandler.SUCCEEDED_RESPONSE.equals(rsp.getCompacts().get(0).getState()));
  }
 @Test
 public void testFindNextToCompactNothingToCompact() throws Exception {
   assertNull(txnHandler.findNextToCompact("fred"));
 }