Examples with ZooCache org.apache.accumulo.server.zookeeper.ZooCache used on opensource projects

Example 1 with ZooCache

use of org.apache.accumulo.server.zookeeper.ZooCache in project accumulo by apache.

the class MetadataConstraints method check.

@Override
public List<Short> check(Environment env, Mutation mutation) {
    ArrayList<Short> violations = null;
    Collection<ColumnUpdate> colUpdates = mutation.getUpdates();
    // check the row, it should contains at least one ; or end with <
    boolean containsSemiC = false;
    byte[] row = mutation.getRow();
    // always allow rows that fall within reserved areas
    if (row.length > 0 && row[0] == '~')
        return null;
    if (row.length > 2 && row[0] == '!' && row[1] == '!' && row[2] == '~')
        return null;
    for (byte b : row) {
        if (b == ';') {
            containsSemiC = true;
        }
        if (b == ';' || b == '<')
            break;
        if (!validTableNameChars[0xff & b]) {
            violations = addIfNotPresent(violations, 4);
        }
    }
    if (!containsSemiC) {
        // see if last row char is <
        if (row.length == 0 || row[row.length - 1] != '<') {
            violations = addIfNotPresent(violations, 4);
        }
    } else {
        if (row.length == 0) {
            violations = addIfNotPresent(violations, 4);
        }
    }
    if (row.length > 0 && row[0] == '!') {
        if (row.length < 3 || row[1] != '0' || (row[2] != '<' && row[2] != ';')) {
            violations = addIfNotPresent(violations, 4);
        }
    }
    // ensure row is not less than Constants.METADATA_TABLE_ID
    if (new Text(row).compareTo(new Text(MetadataTable.ID.getUtf8())) < 0) {
        violations = addViolation(violations, 5);
    }
    boolean checkedBulk = false;
    for (ColumnUpdate columnUpdate : colUpdates) {
        Text columnFamily = new Text(columnUpdate.getColumnFamily());
        if (columnUpdate.isDeleted()) {
            if (!isValidColumn(columnUpdate)) {
                violations = addViolation(violations, 2);
            }
            continue;
        }
        if (columnUpdate.getValue().length == 0 && !columnFamily.equals(ScanFileColumnFamily.NAME)) {
            violations = addViolation(violations, 6);
        }
        if (columnFamily.equals(DataFileColumnFamily.NAME)) {
            try {
                DataFileValue dfv = new DataFileValue(columnUpdate.getValue());
                if (dfv.getSize() < 0 || dfv.getNumEntries() < 0) {
                    violations = addViolation(violations, 1);
                }
            } catch (NumberFormatException | ArrayIndexOutOfBoundsException nfe) {
                violations = addViolation(violations, 1);
            }
        } else if (columnFamily.equals(ScanFileColumnFamily.NAME)) {
        } else if (columnFamily.equals(TabletsSection.BulkFileColumnFamily.NAME)) {
            if (!columnUpdate.isDeleted() && !checkedBulk) {
                // splits, which also write the time reference, are allowed to write this reference even when
                // the transaction is not running because the other half of the tablet is holding a reference
                // to the file.
                boolean isSplitMutation = false;
                // When a tablet is assigned, it re-writes the metadata. It should probably only update the location information,
                // but it writes everything. We allow it to re-write the bulk information if it is setting the location.
                // See ACCUMULO-1230.
                boolean isLocationMutation = false;
                HashSet<Text> dataFiles = new HashSet<>();
                HashSet<Text> loadedFiles = new HashSet<>();
                String tidString = new String(columnUpdate.getValue(), UTF_8);
                int otherTidCount = 0;
                for (ColumnUpdate update : mutation.getUpdates()) {
                    if (new ColumnFQ(update).equals(TabletsSection.ServerColumnFamily.DIRECTORY_COLUMN)) {
                        isSplitMutation = true;
                    } else if (new Text(update.getColumnFamily()).equals(TabletsSection.CurrentLocationColumnFamily.NAME)) {
                        isLocationMutation = true;
                    } else if (new Text(update.getColumnFamily()).equals(DataFileColumnFamily.NAME)) {
                        dataFiles.add(new Text(update.getColumnQualifier()));
                    } else if (new Text(update.getColumnFamily()).equals(TabletsSection.BulkFileColumnFamily.NAME)) {
                        loadedFiles.add(new Text(update.getColumnQualifier()));
                        if (!new String(update.getValue(), UTF_8).equals(tidString)) {
                            otherTidCount++;
                        }
                    }
                }
                if (!isSplitMutation && !isLocationMutation) {
                    long tid = Long.parseLong(tidString);
                    try {
                        if (otherTidCount > 0 || !dataFiles.equals(loadedFiles) || !getArbitrator().transactionAlive(Constants.BULK_ARBITRATOR_TYPE, tid)) {
                            violations = addViolation(violations, 8);
                        }
                    } catch (Exception ex) {
                        violations = addViolation(violations, 8);
                    }
                }
                checkedBulk = true;
            }
        } else {
            if (!isValidColumn(columnUpdate)) {
                violations = addViolation(violations, 2);
            } else if (new ColumnFQ(columnUpdate).equals(TabletsSection.TabletColumnFamily.PREV_ROW_COLUMN) && columnUpdate.getValue().length > 0 && (violations == null || !violations.contains((short) 4))) {
                KeyExtent ke = new KeyExtent(new Text(mutation.getRow()), (Text) null);
                Text per = KeyExtent.decodePrevEndRow(new Value(columnUpdate.getValue()));
                boolean prevEndRowLessThanEndRow = per == null || ke.getEndRow() == null || per.compareTo(ke.getEndRow()) < 0;
                if (!prevEndRowLessThanEndRow) {
                    violations = addViolation(violations, 3);
                }
            } else if (new ColumnFQ(columnUpdate).equals(TabletsSection.ServerColumnFamily.LOCK_COLUMN)) {
                if (zooCache == null) {
                    zooCache = new ZooCache();
                }
                if (zooRoot == null) {
                    zooRoot = ZooUtil.getRoot(HdfsZooInstance.getInstance());
                }
                boolean lockHeld = false;
                String lockId = new String(columnUpdate.getValue(), UTF_8);
                try {
                    lockHeld = ZooLock.isLockHeld(zooCache, new ZooUtil.LockID(zooRoot, lockId));
                } catch (Exception e) {
                    log.debug("Failed to verify lock was held {} {}", lockId, e.getMessage());
                }
                if (!lockHeld) {
                    violations = addViolation(violations, 7);
                }
            }
        }
    }
    if (violations != null) {
        log.debug("violating metadata mutation : {}", new String(mutation.getRow(), UTF_8));
        for (ColumnUpdate update : mutation.getUpdates()) {
            log.debug(" update: {}:{} value {}", new String(update.getColumnFamily(), UTF_8), new String(update.getColumnQualifier(), UTF_8), (update.isDeleted() ? "[delete]" : new String(update.getValue(), UTF_8)));
        }
    }
    return violations;
}

Example 2 with ZooCache

use of org.apache.accumulo.server.zookeeper.ZooCache in project accumulo by apache.

the class DistributedWorkQueueWorkAssigner method assignWork.

@Override
public void assignWork() {
    if (null == workQueue) {
        initializeWorkQueue(conf);
    }
    initializeQueuedWork();
    if (null == zooCache) {
        zooCache = new ZooCache();
    }
    // Get the maximum number of entries we want to queue work for (or the default)
    this.maxQueueSize = conf.getCount(Property.REPLICATION_MAX_WORK_QUEUE);
    // Scan over the work records, adding the work to the queue
    createWork();
    // Keep the state of the work we queued correct
    cleanupFinishedWork();
}

Example 3 with ZooCache

use of org.apache.accumulo.server.zookeeper.ZooCache in project accumulo by apache.

the class SequentialWorkAssignerTest method basicZooKeeperCleanup.

@Test
public void basicZooKeeperCleanup() throws Exception {
    DistributedWorkQueue workQueue = createMock(DistributedWorkQueue.class);
    ZooCache zooCache = createMock(ZooCache.class);
    Instance inst = createMock(Instance.class);
    Map<String, Map<Table.ID, String>> queuedWork = new TreeMap<>();
    Map<Table.ID, String> cluster1Work = new TreeMap<>();
    // Two files for cluster1, one for table '1' and another for table '2' we havce assigned work for
    cluster1Work.put(Table.ID.of("1"), DistributedWorkQueueWorkAssignerHelper.getQueueKey("file1", new ReplicationTarget("cluster1", "1", Table.ID.of("1"))));
    cluster1Work.put(Table.ID.of("2"), DistributedWorkQueueWorkAssignerHelper.getQueueKey("file2", new ReplicationTarget("cluster1", "2", Table.ID.of("2"))));
    queuedWork.put("cluster1", cluster1Work);
    assigner.setConnector(conn);
    assigner.setZooCache(zooCache);
    assigner.setWorkQueue(workQueue);
    assigner.setQueuedWork(queuedWork);
    expect(conn.getInstance()).andReturn(inst);
    expect(inst.getInstanceID()).andReturn("instance");
    // file1 replicated
    expect(zooCache.get(ZooUtil.getRoot("instance") + ReplicationConstants.ZOO_WORK_QUEUE + "/" + DistributedWorkQueueWorkAssignerHelper.getQueueKey("file1", new ReplicationTarget("cluster1", "1", Table.ID.of("1"))))).andReturn(null);
    // file2 still needs to replicate
    expect(zooCache.get(ZooUtil.getRoot("instance") + ReplicationConstants.ZOO_WORK_QUEUE + "/" + DistributedWorkQueueWorkAssignerHelper.getQueueKey("file2", new ReplicationTarget("cluster1", "2", Table.ID.of("2"))))).andReturn(new byte[0]);
    replay(workQueue, zooCache, conn, inst);
    assigner.cleanupFinishedWork();
    verify(workQueue, zooCache, conn, inst);
    Assert.assertEquals(1, cluster1Work.size());
    Assert.assertEquals(DistributedWorkQueueWorkAssignerHelper.getQueueKey("file2", new ReplicationTarget("cluster1", "2", Table.ID.of("2"))), cluster1Work.get(Table.ID.of("2")));
}

Example 4 with ZooCache

use of org.apache.accumulo.server.zookeeper.ZooCache in project accumulo by apache.

the class UnorderedWorkAssignerTest method workNotInZooKeeperIsCleanedUp.

@Test
public void workNotInZooKeeperIsCleanedUp() {
    Set<String> queuedWork = new LinkedHashSet<>(Arrays.asList("wal1", "wal2"));
    assigner.setQueuedWork(queuedWork);
    Instance inst = createMock(Instance.class);
    ZooCache cache = createMock(ZooCache.class);
    assigner.setZooCache(cache);
    expect(conn.getInstance()).andReturn(inst);
    expect(inst.getInstanceID()).andReturn("id");
    expect(cache.get(Constants.ZROOT + "/id" + ReplicationConstants.ZOO_WORK_QUEUE + "/wal1")).andReturn(null);
    expect(cache.get(Constants.ZROOT + "/id" + ReplicationConstants.ZOO_WORK_QUEUE + "/wal2")).andReturn(null);
    replay(cache, inst, conn);
    assigner.cleanupFinishedWork();
    verify(cache, inst, conn);
    Assert.assertTrue("Queued work was not emptied", queuedWork.isEmpty());
}