Examples with SeekableStreamDataSourceMetadata org.apache.druid.indexing.seekablestream.SeekableStreamDataSourceMetadata used on opensource projects

Example 1 with SeekableStreamDataSourceMetadata

use of org.apache.druid.indexing.seekablestream.SeekableStreamDataSourceMetadata in project druid by druid-io.

the class SeekableStreamSupervisor method resetInternal.

@VisibleForTesting
public void resetInternal(DataSourceMetadata dataSourceMetadata) {
    if (dataSourceMetadata == null) {
        // Reset everything
        boolean result = indexerMetadataStorageCoordinator.deleteDataSourceMetadata(dataSource);
        log.info("Reset dataSource[%s] - dataSource metadata entry deleted? [%s]", dataSource, result);
        activelyReadingTaskGroups.values().forEach(group -> killTasksInGroup(group, "DataSourceMetadata is not found while reset"));
        activelyReadingTaskGroups.clear();
        partitionGroups.clear();
        partitionOffsets.clear();
    } else {
        if (!checkSourceMetadataMatch(dataSourceMetadata)) {
            throw new IAE("Datasource metadata instance does not match required, found instance of [%s]", dataSourceMetadata.getClass());
        }
        log.info("Reset dataSource[%s] with metadata[%s]", dataSource, dataSourceMetadata);
        // Reset only the partitions in dataSourceMetadata if it has not been reset yet
        @SuppressWarnings("unchecked") final SeekableStreamDataSourceMetadata<PartitionIdType, SequenceOffsetType> resetMetadata = (SeekableStreamDataSourceMetadata<PartitionIdType, SequenceOffsetType>) dataSourceMetadata;
        if (resetMetadata.getSeekableStreamSequenceNumbers().getStream().equals(ioConfig.getStream())) {
            // metadata can be null
            final DataSourceMetadata metadata = indexerMetadataStorageCoordinator.retrieveDataSourceMetadata(dataSource);
            if (metadata != null && !checkSourceMetadataMatch(metadata)) {
                throw new IAE("Datasource metadata instance does not match required, found instance of [%s]", metadata.getClass());
            }
            @SuppressWarnings("unchecked") final SeekableStreamDataSourceMetadata<PartitionIdType, SequenceOffsetType> currentMetadata = (SeekableStreamDataSourceMetadata<PartitionIdType, SequenceOffsetType>) metadata;
            // defend against consecutive reset requests from replicas
            // as well as the case where the metadata store do not have an entry for the reset partitions
            boolean doReset = false;
            for (Entry<PartitionIdType, SequenceOffsetType> resetPartitionOffset : resetMetadata.getSeekableStreamSequenceNumbers().getPartitionSequenceNumberMap().entrySet()) {
                final SequenceOffsetType partitionOffsetInMetadataStore = currentMetadata == null ? null : currentMetadata.getSeekableStreamSequenceNumbers().getPartitionSequenceNumberMap().get(resetPartitionOffset.getKey());
                final TaskGroup partitionTaskGroup = activelyReadingTaskGroups.get(getTaskGroupIdForPartition(resetPartitionOffset.getKey()));
                final boolean isSameOffset = partitionTaskGroup != null && partitionTaskGroup.startingSequences.get(resetPartitionOffset.getKey()).equals(resetPartitionOffset.getValue());
                if (partitionOffsetInMetadataStore != null || isSameOffset) {
                    doReset = true;
                    break;
                }
            }
            if (!doReset) {
                log.info("Ignoring duplicate reset request [%s]", dataSourceMetadata);
                return;
            }
            boolean metadataUpdateSuccess;
            if (currentMetadata == null) {
                metadataUpdateSuccess = true;
            } else {
                final DataSourceMetadata newMetadata = currentMetadata.minus(resetMetadata);
                try {
                    metadataUpdateSuccess = indexerMetadataStorageCoordinator.resetDataSourceMetadata(dataSource, newMetadata);
                } catch (IOException e) {
                    log.error("Resetting DataSourceMetadata failed [%s]", e.getMessage());
                    throw new RuntimeException(e);
                }
            }
            if (metadataUpdateSuccess) {
                resetMetadata.getSeekableStreamSequenceNumbers().getPartitionSequenceNumberMap().keySet().forEach(partition -> {
                    final int groupId = getTaskGroupIdForPartition(partition);
                    killTaskGroupForPartitions(ImmutableSet.of(partition), "DataSourceMetadata is updated while reset");
                    activelyReadingTaskGroups.remove(groupId);
                    // killTaskGroupForPartitions() cleans up partitionGroups.
                    // Add the removed groups back.
                    partitionGroups.computeIfAbsent(groupId, k -> new HashSet<>());
                    partitionOffsets.put(partition, getNotSetMarker());
                });
            } else {
                throw new ISE("Unable to reset metadata");
            }
        } else {
            log.warn("Reset metadata stream [%s] and supervisor's stream name [%s] do not match", resetMetadata.getSeekableStreamSequenceNumbers().getStream(), ioConfig.getStream());
        }
    }
}

Example 2 with SeekableStreamDataSourceMetadata

use of org.apache.druid.indexing.seekablestream.SeekableStreamDataSourceMetadata in project druid by druid-io.

the class SeekableStreamSupervisor method cleanupClosedAndExpiredPartitions.

/**
 * This method determines the set of expired partitions from the set of partitions currently returned by
 * the record supplier and the set of partitions previously tracked in the metadata.
 * <p>
 * It will mark the expired partitions in metadata and recompute the partition->task group mappings, updating
 * the metadata, the partitionIds list, and the partitionGroups mappings.
 *
 * @param storedPartitions                Set of partitions previously tracked, from the metadata store
 * @param newlyClosedPartitions           Set of partitions that are closed in the metadata store but still present in the
 *                                        current {@link #partitionIds}
 * @param activePartitionsIdsFromSupplier Set of partitions currently returned by the record supplier, but with
 *                                        any partitions that are closed/expired in the metadata store removed
 * @param previouslyExpiredPartitions     Set of partitions that are recorded as expired in the metadata store
 * @param partitionIdsFromSupplier        Set of partitions currently returned by the record supplier.
 */
private void cleanupClosedAndExpiredPartitions(Set<PartitionIdType> storedPartitions, Set<PartitionIdType> newlyClosedPartitions, Set<PartitionIdType> activePartitionsIdsFromSupplier, Set<PartitionIdType> previouslyExpiredPartitions, Set<PartitionIdType> partitionIdsFromSupplier) {
    // If a partition was previously known (stored in metadata) but no longer appears in the list of partitions
    // provided by the record supplier, it has expired.
    Set<PartitionIdType> newlyExpiredPartitions = Sets.difference(storedPartitions, previouslyExpiredPartitions);
    newlyExpiredPartitions = Sets.difference(newlyExpiredPartitions, partitionIdsFromSupplier);
    if (!newlyExpiredPartitions.isEmpty()) {
        log.info("Detected newly expired partitions: " + newlyExpiredPartitions);
        // Mark partitions as expired in metadata
        @SuppressWarnings("unchecked") SeekableStreamDataSourceMetadata<PartitionIdType, SequenceOffsetType> currentMetadata = (SeekableStreamDataSourceMetadata<PartitionIdType, SequenceOffsetType>) indexerMetadataStorageCoordinator.retrieveDataSourceMetadata(dataSource);
        SeekableStreamDataSourceMetadata<PartitionIdType, SequenceOffsetType> cleanedMetadata = createDataSourceMetadataWithExpiredPartitions(currentMetadata, newlyExpiredPartitions);
        log.info("New metadata after partition expiration: " + cleanedMetadata);
        validateMetadataPartitionExpiration(newlyExpiredPartitions, currentMetadata, cleanedMetadata);
        try {
            boolean success = indexerMetadataStorageCoordinator.resetDataSourceMetadata(dataSource, cleanedMetadata);
            if (!success) {
                log.error("Failed to update datasource metadata[%s] with expired partitions removed", cleanedMetadata);
            }
        } catch (IOException ioe) {
            throw new RuntimeException(ioe);
        }
    }
    if (!newlyClosedPartitions.isEmpty()) {
        log.info("Detected newly closed partitions: " + newlyClosedPartitions);
    }
    // Partitions have been dropped
    if (!newlyClosedPartitions.isEmpty() || !newlyExpiredPartitions.isEmpty()) {
        // Compute new partition groups, only including partitions that are
        // still in partitionIdsFromSupplier and not closed
        Map<Integer, Set<PartitionIdType>> newPartitionGroups = recomputePartitionGroupsForExpiration(activePartitionsIdsFromSupplier);
        validatePartitionGroupReassignments(activePartitionsIdsFromSupplier, newPartitionGroups);
        log.info("New partition groups after removing closed and expired partitions: " + newPartitionGroups);
        partitionIds.clear();
        partitionIds.addAll(activePartitionsIdsFromSupplier);
        assignRecordSupplierToPartitionIds();
        for (Integer groupId : partitionGroups.keySet()) {
            if (newPartitionGroups.containsKey(groupId)) {
                partitionGroups.put(groupId, newPartitionGroups.get(groupId));
            } else {
                partitionGroups.put(groupId, new HashSet<>());
            }
        }
    }
}

Example 3 with SeekableStreamDataSourceMetadata

use of org.apache.druid.indexing.seekablestream.SeekableStreamDataSourceMetadata in project druid by druid-io.

the class SeekableStreamSupervisor method verifyAndMergeCheckpoints.

/**
 * This method does two things -
 * 1. Makes sure the checkpoints information in the taskGroup is consistent with that of the tasks, if not kill
 * inconsistent tasks.
 * 2. truncates the checkpoints in the taskGroup corresponding to which segments have been published, so that any newly
 * created tasks for the taskGroup start indexing from after the latest published sequences.
 */
private void verifyAndMergeCheckpoints(final TaskGroup taskGroup) {
    final int groupId = taskGroup.groupId;
    final List<Pair<String, TreeMap<Integer, Map<PartitionIdType, SequenceOffsetType>>>> taskSequences = new ArrayList<>();
    final List<ListenableFuture<TreeMap<Integer, Map<PartitionIdType, SequenceOffsetType>>>> futures = new ArrayList<>();
    final List<String> taskIds = new ArrayList<>();
    for (String taskId : taskGroup.taskIds()) {
        final ListenableFuture<TreeMap<Integer, Map<PartitionIdType, SequenceOffsetType>>> checkpointsFuture = taskClient.getCheckpointsAsync(taskId, true);
        futures.add(checkpointsFuture);
        taskIds.add(taskId);
    }
    try {
        List<TreeMap<Integer, Map<PartitionIdType, SequenceOffsetType>>> futuresResult = Futures.successfulAsList(futures).get(futureTimeoutInSeconds, TimeUnit.SECONDS);
        for (int i = 0; i < futuresResult.size(); i++) {
            final TreeMap<Integer, Map<PartitionIdType, SequenceOffsetType>> checkpoints = futuresResult.get(i);
            final String taskId = taskIds.get(i);
            if (checkpoints == null) {
                try {
                    // catch the exception in failed futures
                    futures.get(i).get();
                } catch (Exception e) {
                    stateManager.recordThrowableEvent(e);
                    log.error(e, "Problem while getting checkpoints for task [%s], killing the task", taskId);
                    killTask(taskId, "Exception[%s] while getting checkpoints", e.getClass());
                    taskGroup.tasks.remove(taskId);
                }
            } else if (checkpoints.isEmpty()) {
                log.warn("Ignoring task [%s], as probably it is not started running yet", taskId);
            } else {
                taskSequences.add(new Pair<>(taskId, checkpoints));
            }
        }
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
    final DataSourceMetadata rawDataSourceMetadata = indexerMetadataStorageCoordinator.retrieveDataSourceMetadata(dataSource);
    if (rawDataSourceMetadata != null && !checkSourceMetadataMatch(rawDataSourceMetadata)) {
        throw new IAE("Datasource metadata instance does not match required, found instance of [%s]", rawDataSourceMetadata.getClass());
    }
    @SuppressWarnings("unchecked") final SeekableStreamDataSourceMetadata<PartitionIdType, SequenceOffsetType> latestDataSourceMetadata = (SeekableStreamDataSourceMetadata<PartitionIdType, SequenceOffsetType>) rawDataSourceMetadata;
    final boolean hasValidOffsetsFromDb = latestDataSourceMetadata != null && latestDataSourceMetadata.getSeekableStreamSequenceNumbers() != null && ioConfig.getStream().equals(latestDataSourceMetadata.getSeekableStreamSequenceNumbers().getStream());
    final Map<PartitionIdType, SequenceOffsetType> latestOffsetsFromDb;
    if (hasValidOffsetsFromDb) {
        latestOffsetsFromDb = latestDataSourceMetadata.getSeekableStreamSequenceNumbers().getPartitionSequenceNumberMap();
    } else {
        latestOffsetsFromDb = null;
    }
    // order tasks of this taskGroup by the latest sequenceId
    taskSequences.sort((o1, o2) -> o2.rhs.firstKey().compareTo(o1.rhs.firstKey()));
    final Set<String> tasksToKill = new HashSet<>();
    final AtomicInteger earliestConsistentSequenceId = new AtomicInteger(-1);
    int taskIndex = 0;
    while (taskIndex < taskSequences.size()) {
        TreeMap<Integer, Map<PartitionIdType, SequenceOffsetType>> taskCheckpoints = taskSequences.get(taskIndex).rhs;
        String taskId = taskSequences.get(taskIndex).lhs;
        if (earliestConsistentSequenceId.get() == -1) {
            // store
            if (taskCheckpoints.entrySet().stream().anyMatch(sequenceCheckpoint -> sequenceCheckpoint.getValue().entrySet().stream().allMatch(partitionOffset -> {
                OrderedSequenceNumber<SequenceOffsetType> sequence = makeSequenceNumber(partitionOffset.getValue());
                OrderedSequenceNumber<SequenceOffsetType> latestOffset = makeSequenceNumber(latestOffsetsFromDb == null ? partitionOffset.getValue() : latestOffsetsFromDb.getOrDefault(partitionOffset.getKey(), partitionOffset.getValue()));
                return sequence.compareTo(latestOffset) == 0;
            }) && earliestConsistentSequenceId.compareAndSet(-1, sequenceCheckpoint.getKey())) || (pendingCompletionTaskGroups.getOrDefault(groupId, new CopyOnWriteArrayList<>()).size() > 0 && earliestConsistentSequenceId.compareAndSet(-1, taskCheckpoints.firstKey()))) {
                final SortedMap<Integer, Map<PartitionIdType, SequenceOffsetType>> latestCheckpoints = new TreeMap<>(taskCheckpoints.tailMap(earliestConsistentSequenceId.get()));
                log.info("Setting taskGroup sequences to [%s] for group [%d]", latestCheckpoints, groupId);
                taskGroup.checkpointSequences.clear();
                taskGroup.checkpointSequences.putAll(latestCheckpoints);
            } else {
                log.debug("Adding task [%s] to kill list, checkpoints[%s], latestoffsets from DB [%s]", taskId, taskCheckpoints, latestOffsetsFromDb);
                tasksToKill.add(taskId);
            }
        } else {
            // check consistency with taskGroup sequences
            if (taskCheckpoints.get(taskGroup.checkpointSequences.firstKey()) == null || !(taskCheckpoints.get(taskGroup.checkpointSequences.firstKey()).equals(taskGroup.checkpointSequences.firstEntry().getValue())) || taskCheckpoints.tailMap(taskGroup.checkpointSequences.firstKey()).size() != taskGroup.checkpointSequences.size()) {
                log.debug("Adding task [%s] to kill list, checkpoints[%s], taskgroup checkpoints [%s]", taskId, taskCheckpoints, taskGroup.checkpointSequences);
                tasksToKill.add(taskId);
            }
        }
        taskIndex++;
    }
    if ((tasksToKill.size() > 0 && tasksToKill.size() == taskGroup.tasks.size()) || (taskGroup.tasks.size() == 0 && pendingCompletionTaskGroups.getOrDefault(groupId, new CopyOnWriteArrayList<>()).size() == 0)) {
        // killing all tasks or no task left in the group ?
        // clear state about the taskgroup so that get latest sequence information is fetched from metadata store
        log.warn("Clearing task group [%d] information as no valid tasks left the group", groupId);
        activelyReadingTaskGroups.remove(groupId);
        for (PartitionIdType partitionId : taskGroup.startingSequences.keySet()) {
            partitionOffsets.put(partitionId, getNotSetMarker());
        }
    }
    taskSequences.stream().filter(taskIdSequences -> tasksToKill.contains(taskIdSequences.lhs)).forEach(sequenceCheckpoint -> {
        killTask(sequenceCheckpoint.lhs, "Killing task [%s], as its checkpoints [%s] are not consistent with group checkpoints[%s] or latest " + "persisted sequences in metadata store [%s]", sequenceCheckpoint.lhs, sequenceCheckpoint.rhs, taskGroup.checkpointSequences, latestOffsetsFromDb);
        taskGroup.tasks.remove(sequenceCheckpoint.lhs);
    });
}