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Example 1 with RecoverySource

use of org.elasticsearch.cluster.routing.RecoverySource in project elasticsearch by elastic.

the class RestoreService method restoreSnapshot.

/**
     * Restores snapshot specified in the restore request.
     *
     * @param request  restore request
     * @param listener restore listener
     */
public void restoreSnapshot(final RestoreRequest request, final ActionListener<RestoreCompletionResponse> listener) {
    try {
        // Read snapshot info and metadata from the repository
        Repository repository = repositoriesService.repository(request.repositoryName);
        final RepositoryData repositoryData = repository.getRepositoryData();
        final Optional<SnapshotId> incompatibleSnapshotId = repositoryData.getIncompatibleSnapshotIds().stream().filter(s -> request.snapshotName.equals(s.getName())).findFirst();
        if (incompatibleSnapshotId.isPresent()) {
            throw new SnapshotRestoreException(request.repositoryName, request.snapshotName, "cannot restore incompatible snapshot");
        }
        final Optional<SnapshotId> matchingSnapshotId = repositoryData.getSnapshotIds().stream().filter(s -> request.snapshotName.equals(s.getName())).findFirst();
        if (matchingSnapshotId.isPresent() == false) {
            throw new SnapshotRestoreException(request.repositoryName, request.snapshotName, "snapshot does not exist");
        }
        final SnapshotId snapshotId = matchingSnapshotId.get();
        final SnapshotInfo snapshotInfo = repository.getSnapshotInfo(snapshotId);
        final Snapshot snapshot = new Snapshot(request.repositoryName, snapshotId);
        List<String> filteredIndices = SnapshotUtils.filterIndices(snapshotInfo.indices(), request.indices(), request.indicesOptions());
        MetaData metaData = repository.getSnapshotMetaData(snapshotInfo, repositoryData.resolveIndices(filteredIndices));
        // Make sure that we can restore from this snapshot
        validateSnapshotRestorable(request.repositoryName, snapshotInfo);
        // Find list of indices that we need to restore
        final Map<String, String> renamedIndices = renamedIndices(request, filteredIndices);
        // Now we can start the actual restore process by adding shards to be recovered in the cluster state
        // and updating cluster metadata (global and index) as needed
        clusterService.submitStateUpdateTask(request.cause(), new ClusterStateUpdateTask() {

            RestoreInfo restoreInfo = null;

            @Override
            public ClusterState execute(ClusterState currentState) {
                // Check if another restore process is already running - cannot run two restore processes at the
                // same time
                RestoreInProgress restoreInProgress = currentState.custom(RestoreInProgress.TYPE);
                if (restoreInProgress != null && !restoreInProgress.entries().isEmpty()) {
                    throw new ConcurrentSnapshotExecutionException(snapshot, "Restore process is already running in this cluster");
                }
                // Check if the snapshot to restore is currently being deleted
                SnapshotDeletionsInProgress deletionsInProgress = currentState.custom(SnapshotDeletionsInProgress.TYPE);
                if (deletionsInProgress != null && deletionsInProgress.hasDeletionsInProgress()) {
                    throw new ConcurrentSnapshotExecutionException(snapshot, "cannot restore a snapshot while a snapshot deletion is in-progress [" + deletionsInProgress.getEntries().get(0).getSnapshot() + "]");
                }
                // Updating cluster state
                ClusterState.Builder builder = ClusterState.builder(currentState);
                MetaData.Builder mdBuilder = MetaData.builder(currentState.metaData());
                ClusterBlocks.Builder blocks = ClusterBlocks.builder().blocks(currentState.blocks());
                RoutingTable.Builder rtBuilder = RoutingTable.builder(currentState.routingTable());
                ImmutableOpenMap<ShardId, RestoreInProgress.ShardRestoreStatus> shards;
                Set<String> aliases = new HashSet<>();
                if (!renamedIndices.isEmpty()) {
                    // We have some indices to restore
                    ImmutableOpenMap.Builder<ShardId, RestoreInProgress.ShardRestoreStatus> shardsBuilder = ImmutableOpenMap.builder();
                    final Version minIndexCompatibilityVersion = currentState.getNodes().getMaxNodeVersion().minimumIndexCompatibilityVersion();
                    for (Map.Entry<String, String> indexEntry : renamedIndices.entrySet()) {
                        String index = indexEntry.getValue();
                        boolean partial = checkPartial(index);
                        SnapshotRecoverySource recoverySource = new SnapshotRecoverySource(snapshot, snapshotInfo.version(), index);
                        String renamedIndexName = indexEntry.getKey();
                        IndexMetaData snapshotIndexMetaData = metaData.index(index);
                        snapshotIndexMetaData = updateIndexSettings(snapshotIndexMetaData, request.indexSettings, request.ignoreIndexSettings);
                        try {
                            snapshotIndexMetaData = metaDataIndexUpgradeService.upgradeIndexMetaData(snapshotIndexMetaData, minIndexCompatibilityVersion);
                        } catch (Exception ex) {
                            throw new SnapshotRestoreException(snapshot, "cannot restore index [" + index + "] because it cannot be upgraded", ex);
                        }
                        // Check that the index is closed or doesn't exist
                        IndexMetaData currentIndexMetaData = currentState.metaData().index(renamedIndexName);
                        IntSet ignoreShards = new IntHashSet();
                        final Index renamedIndex;
                        if (currentIndexMetaData == null) {
                            // Index doesn't exist - create it and start recovery
                            // Make sure that the index we are about to create has a validate name
                            MetaDataCreateIndexService.validateIndexName(renamedIndexName, currentState);
                            createIndexService.validateIndexSettings(renamedIndexName, snapshotIndexMetaData.getSettings());
                            IndexMetaData.Builder indexMdBuilder = IndexMetaData.builder(snapshotIndexMetaData).state(IndexMetaData.State.OPEN).index(renamedIndexName);
                            indexMdBuilder.settings(Settings.builder().put(snapshotIndexMetaData.getSettings()).put(IndexMetaData.SETTING_INDEX_UUID, UUIDs.randomBase64UUID()));
                            if (!request.includeAliases() && !snapshotIndexMetaData.getAliases().isEmpty()) {
                                // Remove all aliases - they shouldn't be restored
                                indexMdBuilder.removeAllAliases();
                            } else {
                                for (ObjectCursor<String> alias : snapshotIndexMetaData.getAliases().keys()) {
                                    aliases.add(alias.value);
                                }
                            }
                            IndexMetaData updatedIndexMetaData = indexMdBuilder.build();
                            if (partial) {
                                populateIgnoredShards(index, ignoreShards);
                            }
                            rtBuilder.addAsNewRestore(updatedIndexMetaData, recoverySource, ignoreShards);
                            blocks.addBlocks(updatedIndexMetaData);
                            mdBuilder.put(updatedIndexMetaData, true);
                            renamedIndex = updatedIndexMetaData.getIndex();
                        } else {
                            validateExistingIndex(currentIndexMetaData, snapshotIndexMetaData, renamedIndexName, partial);
                            // Index exists and it's closed - open it in metadata and start recovery
                            IndexMetaData.Builder indexMdBuilder = IndexMetaData.builder(snapshotIndexMetaData).state(IndexMetaData.State.OPEN);
                            indexMdBuilder.version(Math.max(snapshotIndexMetaData.getVersion(), currentIndexMetaData.getVersion() + 1));
                            if (!request.includeAliases()) {
                                // Remove all snapshot aliases
                                if (!snapshotIndexMetaData.getAliases().isEmpty()) {
                                    indexMdBuilder.removeAllAliases();
                                }
                                /// Add existing aliases
                                for (ObjectCursor<AliasMetaData> alias : currentIndexMetaData.getAliases().values()) {
                                    indexMdBuilder.putAlias(alias.value);
                                }
                            } else {
                                for (ObjectCursor<String> alias : snapshotIndexMetaData.getAliases().keys()) {
                                    aliases.add(alias.value);
                                }
                            }
                            indexMdBuilder.settings(Settings.builder().put(snapshotIndexMetaData.getSettings()).put(IndexMetaData.SETTING_INDEX_UUID, currentIndexMetaData.getIndexUUID()));
                            IndexMetaData updatedIndexMetaData = indexMdBuilder.index(renamedIndexName).build();
                            rtBuilder.addAsRestore(updatedIndexMetaData, recoverySource);
                            blocks.updateBlocks(updatedIndexMetaData);
                            mdBuilder.put(updatedIndexMetaData, true);
                            renamedIndex = updatedIndexMetaData.getIndex();
                        }
                        for (int shard = 0; shard < snapshotIndexMetaData.getNumberOfShards(); shard++) {
                            if (!ignoreShards.contains(shard)) {
                                shardsBuilder.put(new ShardId(renamedIndex, shard), new RestoreInProgress.ShardRestoreStatus(clusterService.state().nodes().getLocalNodeId()));
                            } else {
                                shardsBuilder.put(new ShardId(renamedIndex, shard), new RestoreInProgress.ShardRestoreStatus(clusterService.state().nodes().getLocalNodeId(), RestoreInProgress.State.FAILURE));
                            }
                        }
                    }
                    shards = shardsBuilder.build();
                    RestoreInProgress.Entry restoreEntry = new RestoreInProgress.Entry(snapshot, overallState(RestoreInProgress.State.INIT, shards), Collections.unmodifiableList(new ArrayList<>(renamedIndices.keySet())), shards);
                    builder.putCustom(RestoreInProgress.TYPE, new RestoreInProgress(restoreEntry));
                } else {
                    shards = ImmutableOpenMap.of();
                }
                checkAliasNameConflicts(renamedIndices, aliases);
                // Restore global state if needed
                restoreGlobalStateIfRequested(mdBuilder);
                if (completed(shards)) {
                    // We don't have any indices to restore - we are done
                    restoreInfo = new RestoreInfo(snapshotId.getName(), Collections.unmodifiableList(new ArrayList<>(renamedIndices.keySet())), shards.size(), shards.size() - failedShards(shards));
                }
                RoutingTable rt = rtBuilder.build();
                ClusterState updatedState = builder.metaData(mdBuilder).blocks(blocks).routingTable(rt).build();
                return allocationService.reroute(updatedState, "restored snapshot [" + snapshot + "]");
            }

            private void checkAliasNameConflicts(Map<String, String> renamedIndices, Set<String> aliases) {
                for (Map.Entry<String, String> renamedIndex : renamedIndices.entrySet()) {
                    if (aliases.contains(renamedIndex.getKey())) {
                        throw new SnapshotRestoreException(snapshot, "cannot rename index [" + renamedIndex.getValue() + "] into [" + renamedIndex.getKey() + "] because of conflict with an alias with the same name");
                    }
                }
            }

            private void populateIgnoredShards(String index, IntSet ignoreShards) {
                for (SnapshotShardFailure failure : snapshotInfo.shardFailures()) {
                    if (index.equals(failure.index())) {
                        ignoreShards.add(failure.shardId());
                    }
                }
            }

            private boolean checkPartial(String index) {
                // Make sure that index was fully snapshotted
                if (failed(snapshotInfo, index)) {
                    if (request.partial()) {
                        return true;
                    } else {
                        throw new SnapshotRestoreException(snapshot, "index [" + index + "] wasn't fully snapshotted - cannot restore");
                    }
                } else {
                    return false;
                }
            }

            private void validateExistingIndex(IndexMetaData currentIndexMetaData, IndexMetaData snapshotIndexMetaData, String renamedIndex, boolean partial) {
                // Index exist - checking that it's closed
                if (currentIndexMetaData.getState() != IndexMetaData.State.CLOSE) {
                    // TODO: Enable restore for open indices
                    throw new SnapshotRestoreException(snapshot, "cannot restore index [" + renamedIndex + "] because it's open");
                }
                // Index exist - checking if it's partial restore
                if (partial) {
                    throw new SnapshotRestoreException(snapshot, "cannot restore partial index [" + renamedIndex + "] because such index already exists");
                }
                // Make sure that the number of shards is the same. That's the only thing that we cannot change
                if (currentIndexMetaData.getNumberOfShards() != snapshotIndexMetaData.getNumberOfShards()) {
                    throw new SnapshotRestoreException(snapshot, "cannot restore index [" + renamedIndex + "] with [" + currentIndexMetaData.getNumberOfShards() + "] shard from snapshot with [" + snapshotIndexMetaData.getNumberOfShards() + "] shards");
                }
            }

            /**
                 * Optionally updates index settings in indexMetaData by removing settings listed in ignoreSettings and
                 * merging them with settings in changeSettings.
                 */
            private IndexMetaData updateIndexSettings(IndexMetaData indexMetaData, Settings changeSettings, String[] ignoreSettings) {
                if (changeSettings.names().isEmpty() && ignoreSettings.length == 0) {
                    return indexMetaData;
                }
                Settings normalizedChangeSettings = Settings.builder().put(changeSettings).normalizePrefix(IndexMetaData.INDEX_SETTING_PREFIX).build();
                IndexMetaData.Builder builder = IndexMetaData.builder(indexMetaData);
                Map<String, String> settingsMap = new HashMap<>(indexMetaData.getSettings().getAsMap());
                List<String> simpleMatchPatterns = new ArrayList<>();
                for (String ignoredSetting : ignoreSettings) {
                    if (!Regex.isSimpleMatchPattern(ignoredSetting)) {
                        if (UNREMOVABLE_SETTINGS.contains(ignoredSetting)) {
                            throw new SnapshotRestoreException(snapshot, "cannot remove setting [" + ignoredSetting + "] on restore");
                        } else {
                            settingsMap.remove(ignoredSetting);
                        }
                    } else {
                        simpleMatchPatterns.add(ignoredSetting);
                    }
                }
                if (!simpleMatchPatterns.isEmpty()) {
                    String[] removePatterns = simpleMatchPatterns.toArray(new String[simpleMatchPatterns.size()]);
                    Iterator<Map.Entry<String, String>> iterator = settingsMap.entrySet().iterator();
                    while (iterator.hasNext()) {
                        Map.Entry<String, String> entry = iterator.next();
                        if (UNREMOVABLE_SETTINGS.contains(entry.getKey()) == false) {
                            if (Regex.simpleMatch(removePatterns, entry.getKey())) {
                                iterator.remove();
                            }
                        }
                    }
                }
                for (Map.Entry<String, String> entry : normalizedChangeSettings.getAsMap().entrySet()) {
                    if (UNMODIFIABLE_SETTINGS.contains(entry.getKey())) {
                        throw new SnapshotRestoreException(snapshot, "cannot modify setting [" + entry.getKey() + "] on restore");
                    } else {
                        settingsMap.put(entry.getKey(), entry.getValue());
                    }
                }
                return builder.settings(Settings.builder().put(settingsMap)).build();
            }

            private void restoreGlobalStateIfRequested(MetaData.Builder mdBuilder) {
                if (request.includeGlobalState()) {
                    if (metaData.persistentSettings() != null) {
                        Settings settings = metaData.persistentSettings();
                        clusterSettings.validateUpdate(settings);
                        mdBuilder.persistentSettings(settings);
                    }
                    if (metaData.templates() != null) {
                        // TODO: Should all existing templates be deleted first?
                        for (ObjectCursor<IndexTemplateMetaData> cursor : metaData.templates().values()) {
                            mdBuilder.put(cursor.value);
                        }
                    }
                    if (metaData.customs() != null) {
                        for (ObjectObjectCursor<String, MetaData.Custom> cursor : metaData.customs()) {
                            if (!RepositoriesMetaData.TYPE.equals(cursor.key)) {
                                // Don't restore repositories while we are working with them
                                // TODO: Should we restore them at the end?
                                mdBuilder.putCustom(cursor.key, cursor.value);
                            }
                        }
                    }
                }
            }

            @Override
            public void onFailure(String source, Exception e) {
                logger.warn((Supplier<?>) () -> new ParameterizedMessage("[{}] failed to restore snapshot", snapshotId), e);
                listener.onFailure(e);
            }

            @Override
            public TimeValue timeout() {
                return request.masterNodeTimeout();
            }

            @Override
            public void clusterStateProcessed(String source, ClusterState oldState, ClusterState newState) {
                listener.onResponse(new RestoreCompletionResponse(snapshot, restoreInfo));
            }
        });
    } catch (Exception e) {
        logger.warn((Supplier<?>) () -> new ParameterizedMessage("[{}] failed to restore snapshot", request.repositoryName + ":" + request.snapshotName), e);
        listener.onFailure(e);
    }
}
Also used : MetaData(org.elasticsearch.cluster.metadata.MetaData) ShardId(org.elasticsearch.index.shard.ShardId) SETTING_INDEX_UUID(org.elasticsearch.cluster.metadata.IndexMetaData.SETTING_INDEX_UUID) SETTING_VERSION_MINIMUM_COMPATIBLE(org.elasticsearch.cluster.metadata.IndexMetaData.SETTING_VERSION_MINIMUM_COMPATIBLE) SnapshotRecoverySource(org.elasticsearch.cluster.routing.RecoverySource.SnapshotRecoverySource) AllocationService(org.elasticsearch.cluster.routing.allocation.AllocationService) ClusterBlocks(org.elasticsearch.cluster.block.ClusterBlocks) ObjectObjectCursor(com.carrotsearch.hppc.cursors.ObjectObjectCursor) ClusterState(org.elasticsearch.cluster.ClusterState) ClusterStateUpdateTask(org.elasticsearch.cluster.ClusterStateUpdateTask) Settings(org.elasticsearch.common.settings.Settings) RestoreInProgress(org.elasticsearch.cluster.RestoreInProgress) Map(java.util.Map) IndicesOptions(org.elasticsearch.action.support.IndicesOptions) 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Example 2 with RecoverySource

use of org.elasticsearch.cluster.routing.RecoverySource in project crate by crate.

the class StoreRecovery method recoverFromRepository.

/**
 * Recovers an index from a given {@link Repository}. This method restores a
 * previously created index snapshot into an existing initializing shard.
 *
 * @param indexShard the index shard instance to recovery the snapshot from
 * @param repository the repository holding the physical files the shard should be recovered from
 * @param listener resolves to <code>true</code> if the shard has been recovered successfully, <code>false</code> if the recovery
 *                 has been ignored due to a concurrent modification of if the clusters state has changed due to async updates.
 */
void recoverFromRepository(final IndexShard indexShard, Repository repository, ActionListener<Boolean> listener) {
    try {
        if (canRecover(indexShard)) {
            RecoverySource.Type recoveryType = indexShard.recoveryState().getRecoverySource().getType();
            assert recoveryType == RecoverySource.Type.SNAPSHOT : "expected snapshot recovery type: " + recoveryType;
            SnapshotRecoverySource recoverySource = (SnapshotRecoverySource) indexShard.recoveryState().getRecoverySource();
            restore(indexShard, repository, recoverySource, recoveryListener(indexShard, listener));
        } else {
            listener.onResponse(false);
        }
    } catch (Exception e) {
        listener.onFailure(e);
    }
}
Also used : SnapshotRecoverySource(org.elasticsearch.cluster.routing.RecoverySource.SnapshotRecoverySource) IndexShardRestoreFailedException(org.elasticsearch.index.snapshots.IndexShardRestoreFailedException) EngineException(org.elasticsearch.index.engine.EngineException) IOException(java.io.IOException) SnapshotRecoverySource(org.elasticsearch.cluster.routing.RecoverySource.SnapshotRecoverySource) RecoverySource(org.elasticsearch.cluster.routing.RecoverySource)

Example 3 with RecoverySource

use of org.elasticsearch.cluster.routing.RecoverySource in project crate by crate.

the class IndexShardTestCase method recoverShardFromSnapshot.

/**
 * Recover a shard from a snapshot using a given repository *
 */
protected void recoverShardFromSnapshot(final IndexShard shard, final Snapshot snapshot, final Repository repository) {
    final Version version = Version.CURRENT;
    final ShardId shardId = shard.shardId();
    final String index = shardId.getIndexName();
    final IndexId indexId = new IndexId(shardId.getIndex().getName(), shardId.getIndex().getUUID());
    final DiscoveryNode node = getFakeDiscoNode(shard.routingEntry().currentNodeId());
    final RecoverySource.SnapshotRecoverySource recoverySource = new RecoverySource.SnapshotRecoverySource(UUIDs.randomBase64UUID(), snapshot, version, index);
    final ShardRouting shardRouting = newShardRouting(shardId, node.getId(), true, ShardRoutingState.INITIALIZING, recoverySource);
    shard.markAsRecovering("from snapshot", new RecoveryState(shardRouting, node, null));
    final PlainActionFuture<Void> future = PlainActionFuture.newFuture();
    repository.restoreShard(shard.store(), snapshot.getSnapshotId(), indexId, shard.shardId(), shard.recoveryState(), future);
    future.actionGet();
}
Also used : IndexId(org.elasticsearch.repositories.IndexId) DiscoveryNode(org.elasticsearch.cluster.node.DiscoveryNode) Version(org.elasticsearch.Version) TestShardRouting(org.elasticsearch.cluster.routing.TestShardRouting) ShardRouting(org.elasticsearch.cluster.routing.ShardRouting) TestShardRouting.newShardRouting(org.elasticsearch.cluster.routing.TestShardRouting.newShardRouting) RecoveryState(org.elasticsearch.indices.recovery.RecoveryState) RecoverySource(org.elasticsearch.cluster.routing.RecoverySource)

Example 4 with RecoverySource

use of org.elasticsearch.cluster.routing.RecoverySource in project crate by crate.

the class IndexMetadataUpdater method updateInSyncAllocations.

/**
 * Updates in-sync allocations with routing changes that were made to the routing table.
 */
private IndexMetadata.Builder updateInSyncAllocations(RoutingTable newRoutingTable, IndexMetadata oldIndexMetadata, IndexMetadata.Builder indexMetadataBuilder, ShardId shardId, Updates updates) {
    assert Sets.haveEmptyIntersection(updates.addedAllocationIds, updates.removedAllocationIds) : "allocation ids cannot be both added and removed in the same allocation round, added ids: " + updates.addedAllocationIds + ", removed ids: " + updates.removedAllocationIds;
    Set<String> oldInSyncAllocationIds = oldIndexMetadata.inSyncAllocationIds(shardId.id());
    // check if we have been force-initializing an empty primary or a stale primary
    if (updates.initializedPrimary != null && oldInSyncAllocationIds.isEmpty() == false && oldInSyncAllocationIds.contains(updates.initializedPrimary.allocationId().getId()) == false) {
        // we're not reusing an existing in-sync allocation id to initialize a primary, which means that we're either force-allocating
        // an empty or a stale primary (see AllocateEmptyPrimaryAllocationCommand or AllocateStalePrimaryAllocationCommand).
        RecoverySource recoverySource = updates.initializedPrimary.recoverySource();
        RecoverySource.Type recoverySourceType = recoverySource.getType();
        boolean emptyPrimary = recoverySourceType == RecoverySource.Type.EMPTY_STORE;
        assert updates.addedAllocationIds.isEmpty() : (emptyPrimary ? "empty" : "stale") + " primary is not force-initialized in same allocation round where shards are started";
        if (indexMetadataBuilder == null) {
            indexMetadataBuilder = IndexMetadata.builder(oldIndexMetadata);
        }
        if (emptyPrimary) {
            // forcing an empty primary resets the in-sync allocations to the empty set (ShardRouting.allocatedPostIndexCreate)
            indexMetadataBuilder.putInSyncAllocationIds(shardId.id(), Collections.emptySet());
        } else {
            final String allocationId;
            if (recoverySource == RecoverySource.ExistingStoreRecoverySource.FORCE_STALE_PRIMARY_INSTANCE) {
                allocationId = RecoverySource.ExistingStoreRecoverySource.FORCED_ALLOCATION_ID;
            } else {
                assert recoverySource instanceof RecoverySource.SnapshotRecoverySource : recoverySource;
                allocationId = updates.initializedPrimary.allocationId().getId();
            }
            // forcing a stale primary resets the in-sync allocations to the singleton set with the stale id
            indexMetadataBuilder.putInSyncAllocationIds(shardId.id(), Collections.singleton(allocationId));
        }
    } else {
        // standard path for updating in-sync ids
        Set<String> inSyncAllocationIds = new HashSet<>(oldInSyncAllocationIds);
        inSyncAllocationIds.addAll(updates.addedAllocationIds);
        inSyncAllocationIds.removeAll(updates.removedAllocationIds);
        assert oldInSyncAllocationIds.contains(RecoverySource.ExistingStoreRecoverySource.FORCED_ALLOCATION_ID) == false || inSyncAllocationIds.contains(RecoverySource.ExistingStoreRecoverySource.FORCED_ALLOCATION_ID) == false : "fake allocation id has to be removed, inSyncAllocationIds:" + inSyncAllocationIds;
        // Prevent set of inSyncAllocationIds to grow unboundedly. This can happen for example if we don't write to a primary
        // but repeatedly shut down nodes that have active replicas.
        // We use number_of_replicas + 1 (= possible active shard copies) to bound the inSyncAllocationIds set
        // Only trim the set of allocation ids when it grows, otherwise we might trim too eagerly when the number
        // of replicas was decreased while shards were unassigned.
        // +1 for the primary
        int maxActiveShards = oldIndexMetadata.getNumberOfReplicas() + 1;
        IndexShardRoutingTable newShardRoutingTable = newRoutingTable.shardRoutingTable(shardId);
        assert newShardRoutingTable.assignedShards().stream().filter(ShardRouting::isRelocationTarget).map(s -> s.allocationId().getId()).noneMatch(inSyncAllocationIds::contains) : newShardRoutingTable.assignedShards() + " vs " + inSyncAllocationIds;
        if (inSyncAllocationIds.size() > oldInSyncAllocationIds.size() && inSyncAllocationIds.size() > maxActiveShards) {
            // trim entries that have no corresponding shard routing in the cluster state (i.e. trim unavailable copies)
            List<ShardRouting> assignedShards = newShardRoutingTable.assignedShards().stream().filter(s -> s.isRelocationTarget() == false).collect(Collectors.toList());
            assert assignedShards.size() <= maxActiveShards : "cannot have more assigned shards " + assignedShards + " than maximum possible active shards " + maxActiveShards;
            Set<String> assignedAllocations = assignedShards.stream().map(s -> s.allocationId().getId()).collect(Collectors.toSet());
            inSyncAllocationIds = inSyncAllocationIds.stream().sorted(// values with routing entries first
            Comparator.comparing(assignedAllocations::contains).reversed()).limit(maxActiveShards).collect(Collectors.toSet());
        }
        // in-sync set, this could create an empty primary on the next allocation.
        if (newShardRoutingTable.activeShards().isEmpty() && updates.firstFailedPrimary != null) {
            // add back allocation id of failed primary
            inSyncAllocationIds.add(updates.firstFailedPrimary.allocationId().getId());
        }
        assert inSyncAllocationIds.isEmpty() == false || oldInSyncAllocationIds.isEmpty() : "in-sync allocations cannot become empty after they have been non-empty: " + oldInSyncAllocationIds;
        // be extra safe here and only update in-sync set if it is non-empty
        if (inSyncAllocationIds.isEmpty() == false) {
            if (indexMetadataBuilder == null) {
                indexMetadataBuilder = IndexMetadata.builder(oldIndexMetadata);
            }
            indexMetadataBuilder.putInSyncAllocationIds(shardId.id(), inSyncAllocationIds);
        }
    }
    return indexMetadataBuilder;
}
Also used : ShardRouting(org.elasticsearch.cluster.routing.ShardRouting) ShardId(org.elasticsearch.index.shard.ShardId) IndexMetadata(org.elasticsearch.cluster.metadata.IndexMetadata) Set(java.util.Set) IndexShardRoutingTable(org.elasticsearch.cluster.routing.IndexShardRoutingTable) HashMap(java.util.HashMap) RoutingChangesObserver(org.elasticsearch.cluster.routing.RoutingChangesObserver) UnassignedInfo(org.elasticsearch.cluster.routing.UnassignedInfo) Index(org.elasticsearch.index.Index) Collectors(java.util.stream.Collectors) Sets(io.crate.common.collections.Sets) HashSet(java.util.HashSet) Objects(java.util.Objects) RecoverySource(org.elasticsearch.cluster.routing.RecoverySource) ClusterState(org.elasticsearch.cluster.ClusterState) Metadata(org.elasticsearch.cluster.metadata.Metadata) List(java.util.List) Logger(org.apache.logging.log4j.Logger) RoutingTable(org.elasticsearch.cluster.routing.RoutingTable) Map(java.util.Map) Comparator(java.util.Comparator) Collections(java.util.Collections) IndexShardRoutingTable(org.elasticsearch.cluster.routing.IndexShardRoutingTable) RecoverySource(org.elasticsearch.cluster.routing.RecoverySource) ShardRouting(org.elasticsearch.cluster.routing.ShardRouting) HashSet(java.util.HashSet)

Example 5 with RecoverySource

use of org.elasticsearch.cluster.routing.RecoverySource in project crate by crate.

the class IndexRecoveryIT method testSnapshotRecovery.

@Test
public void testSnapshotRecovery() throws Exception {
    logger.info("--> start node A");
    String nodeA = internalCluster().startNode();
    logger.info("--> create repository");
    execute("CREATE REPOSITORY " + REPO_NAME + " TYPE FS WITH (location = '" + randomRepoPath() + "', compress=false)");
    ensureGreen();
    logger.info("--> create index on node: {}", nodeA);
    createAndPopulateIndex(INDEX_NAME, 1, SHARD_COUNT, REPLICA_COUNT);
    logger.info("--> snapshot");
    var snapshotName = REPO_NAME + "." + SNAP_NAME;
    execute("CREATE SNAPSHOT " + snapshotName + " ALL WITH (wait_for_completion=true)");
    execute("SELECT state FROM sys.snapshots WHERE name = '" + SNAP_NAME + "'");
    assertThat(response.rows()[0][0], is("SUCCESS"));
    execute("ALTER TABLE " + INDEX_NAME + " CLOSE");
    logger.info("--> restore");
    execute("RESTORE SNAPSHOT " + snapshotName + " ALL WITH (wait_for_completion=true)");
    ensureGreen();
    var snapshotInfo = client().execute(GetSnapshotsAction.INSTANCE, new GetSnapshotsRequest(REPO_NAME, new String[] { SNAP_NAME })).get().getSnapshots().get(0);
    logger.info("--> request recoveries");
    var indexName = IndexParts.toIndexName(sqlExecutor.getCurrentSchema(), INDEX_NAME, null);
    RecoveryResponse response = client().execute(RecoveryAction.INSTANCE, new RecoveryRequest(indexName)).actionGet();
    for (Map.Entry<String, List<RecoveryState>> indexRecoveryStates : response.shardRecoveryStates().entrySet()) {
        assertThat(indexRecoveryStates.getKey(), equalTo(indexName));
        List<RecoveryState> recoveryStates = indexRecoveryStates.getValue();
        assertThat(recoveryStates.size(), equalTo(SHARD_COUNT));
        for (RecoveryState recoveryState : recoveryStates) {
            RecoverySource.SnapshotRecoverySource recoverySource = new RecoverySource.SnapshotRecoverySource(((RecoverySource.SnapshotRecoverySource) recoveryState.getRecoverySource()).restoreUUID(), new Snapshot(REPO_NAME, snapshotInfo.snapshotId()), Version.CURRENT, indexName);
            assertRecoveryState(recoveryState, 0, recoverySource, true, RecoveryState.Stage.DONE, null, nodeA);
            validateIndexRecoveryState(recoveryState.getIndex());
        }
    }
}
Also used : GetSnapshotsRequest(org.elasticsearch.action.admin.cluster.snapshots.get.GetSnapshotsRequest) RecoveryResponse(org.elasticsearch.action.admin.indices.recovery.RecoveryResponse) RecoverySource(org.elasticsearch.cluster.routing.RecoverySource) Snapshot(org.elasticsearch.snapshots.Snapshot) RecoveryRequest(org.elasticsearch.action.admin.indices.recovery.RecoveryRequest) ArrayList(java.util.ArrayList) List(java.util.List) Map(java.util.Map) Collections.singletonMap(java.util.Collections.singletonMap) Test(org.junit.Test)

Aggregations

RecoverySource (org.elasticsearch.cluster.routing.RecoverySource)10 ShardRouting (org.elasticsearch.cluster.routing.ShardRouting)5 List (java.util.List)4 Map (java.util.Map)4 SnapshotRecoverySource (org.elasticsearch.cluster.routing.RecoverySource.SnapshotRecoverySource)4 ArrayList (java.util.ArrayList)3 Collections (java.util.Collections)3 HashMap (java.util.HashMap)3 HashSet (java.util.HashSet)3 Objects (java.util.Objects)3 Set (java.util.Set)3 Collectors (java.util.stream.Collectors)3 Logger (org.apache.logging.log4j.Logger)3 Version (org.elasticsearch.Version)3 ClusterState (org.elasticsearch.cluster.ClusterState)3 IntHashSet (com.carrotsearch.hppc.IntHashSet)2 IntSet (com.carrotsearch.hppc.IntSet)2 ObjectCursor (com.carrotsearch.hppc.cursors.ObjectCursor)2 ObjectObjectCursor (com.carrotsearch.hppc.cursors.ObjectObjectCursor)2 Collections.unmodifiableSet (java.util.Collections.unmodifiableSet)2