Examples with Slice org.apache.solr.common.cloud.Slice used on opensource projects

Example 16 with Slice

use of org.apache.solr.common.cloud.Slice in project lucene-solr by apache.

the class BackupCmd method copyIndexFiles.

private void copyIndexFiles(URI backupPath, ZkNodeProps request, NamedList results) throws Exception {
    String collectionName = request.getStr(COLLECTION_PROP);
    String backupName = request.getStr(NAME);
    String asyncId = request.getStr(ASYNC);
    String repoName = request.getStr(CoreAdminParams.BACKUP_REPOSITORY);
    ShardHandler shardHandler = ocmh.shardHandlerFactory.getShardHandler();
    Map<String, String> requestMap = new HashMap<>();
    String commitName = request.getStr(CoreAdminParams.COMMIT_NAME);
    Optional<CollectionSnapshotMetaData> snapshotMeta = Optional.empty();
    if (commitName != null) {
        SolrZkClient zkClient = ocmh.overseer.getZkController().getZkClient();
        snapshotMeta = SolrSnapshotManager.getCollectionLevelSnapshot(zkClient, collectionName, commitName);
        if (!snapshotMeta.isPresent()) {
            throw new SolrException(ErrorCode.BAD_REQUEST, "Snapshot with name " + commitName + " does not exist for collection " + collectionName);
        }
        if (snapshotMeta.get().getStatus() != SnapshotStatus.Successful) {
            throw new SolrException(ErrorCode.BAD_REQUEST, "Snapshot with name " + commitName + " for collection " + collectionName + " has not completed successfully. The status is " + snapshotMeta.get().getStatus());
        }
    }
    log.info("Starting backup of collection={} with backupName={} at location={}", collectionName, backupName, backupPath);
    Collection<String> shardsToConsider = Collections.emptySet();
    if (snapshotMeta.isPresent()) {
        shardsToConsider = snapshotMeta.get().getShards();
    }
    for (Slice slice : ocmh.zkStateReader.getClusterState().getCollection(collectionName).getActiveSlices()) {
        Replica replica = null;
        if (snapshotMeta.isPresent()) {
            if (!shardsToConsider.contains(slice.getName())) {
                log.warn("Skipping the backup for shard {} since it wasn't part of the collection {} when snapshot {} was created.", slice.getName(), collectionName, snapshotMeta.get().getName());
                continue;
            }
            replica = selectReplicaWithSnapshot(snapshotMeta.get(), slice);
        } else {
            // Note - Actually this can return a null value when there is no leader for this shard.
            replica = slice.getLeader();
            if (replica == null) {
                throw new SolrException(ErrorCode.SERVER_ERROR, "No 'leader' replica available for shard " + slice.getName() + " of collection " + collectionName);
            }
        }
        String coreName = replica.getStr(CORE_NAME_PROP);
        ModifiableSolrParams params = new ModifiableSolrParams();
        params.set(CoreAdminParams.ACTION, CoreAdminParams.CoreAdminAction.BACKUPCORE.toString());
        params.set(NAME, slice.getName());
        params.set(CoreAdminParams.BACKUP_REPOSITORY, repoName);
        // note: index dir will be here then the "snapshot." + slice name
        params.set(CoreAdminParams.BACKUP_LOCATION, backupPath.toASCIIString());
        params.set(CORE_NAME_PROP, coreName);
        if (snapshotMeta.isPresent()) {
            params.set(CoreAdminParams.COMMIT_NAME, snapshotMeta.get().getName());
        }
        ocmh.sendShardRequest(replica.getNodeName(), params, shardHandler, asyncId, requestMap);
        log.debug("Sent backup request to core={} for backupName={}", coreName, backupName);
    }
    log.debug("Sent backup requests to all shard leaders for backupName={}", backupName);
    ocmh.processResponses(results, shardHandler, true, "Could not backup all replicas", asyncId, requestMap);
}

Example 17 with Slice

use of org.apache.solr.common.cloud.Slice in project lucene-solr by apache.

the class DeleteShardCmd method call.

@Override
public void call(ClusterState clusterState, ZkNodeProps message, NamedList results) throws Exception {
    String collectionName = message.getStr(ZkStateReader.COLLECTION_PROP);
    String sliceId = message.getStr(ZkStateReader.SHARD_ID_PROP);
    log.info("Delete shard invoked");
    Slice slice = clusterState.getSlice(collectionName, sliceId);
    if (slice == null) {
        if (clusterState.hasCollection(collectionName)) {
            throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "No shard with name " + sliceId + " exists for collection " + collectionName);
        } else {
            throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "No collection with the specified name exists: " + collectionName);
        }
    }
    // For now, only allow for deletions of Inactive slices or custom hashes (range==null).
    // TODO: Add check for range gaps on Slice deletion
    final Slice.State state = slice.getState();
    if (!(slice.getRange() == null || state == Slice.State.INACTIVE || state == Slice.State.RECOVERY || state == Slice.State.CONSTRUCTION) || state == Slice.State.RECOVERY_FAILED) {
        throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "The slice: " + slice.getName() + " is currently " + state + ". Only non-active (or custom-hashed) slices can be deleted.");
    }
    if (state == Slice.State.RECOVERY) {
        // mark the slice as 'construction' and only then try to delete the cores
        // see SOLR-9455
        DistributedQueue inQueue = Overseer.getStateUpdateQueue(ocmh.zkStateReader.getZkClient());
        Map<String, Object> propMap = new HashMap<>();
        propMap.put(Overseer.QUEUE_OPERATION, OverseerAction.UPDATESHARDSTATE.toLower());
        propMap.put(sliceId, Slice.State.CONSTRUCTION.toString());
        propMap.put(ZkStateReader.COLLECTION_PROP, collectionName);
        ZkNodeProps m = new ZkNodeProps(propMap);
        inQueue.offer(Utils.toJSON(m));
    }
    String asyncId = message.getStr(ASYNC);
    try {
        List<ZkNodeProps> replicas = getReplicasForSlice(collectionName, slice);
        CountDownLatch cleanupLatch = new CountDownLatch(replicas.size());
        for (ZkNodeProps r : replicas) {
            final ZkNodeProps replica = r.plus(message.getProperties()).plus("parallel", "true").plus(ASYNC, asyncId);
            log.info("Deleting replica for collection={} shard={} on node={}", replica.getStr(COLLECTION_PROP), replica.getStr(SHARD_ID_PROP), replica.getStr(CoreAdminParams.NODE));
            NamedList deleteResult = new NamedList();
            try {
                ((DeleteReplicaCmd) ocmh.commandMap.get(DELETEREPLICA)).deleteReplica(clusterState, replica, deleteResult, () -> {
                    cleanupLatch.countDown();
                    if (deleteResult.get("failure") != null) {
                        synchronized (results) {
                            results.add("failure", String.format(Locale.ROOT, "Failed to delete replica for collection=%s shard=%s" + " on node=%s", replica.getStr(COLLECTION_PROP), replica.getStr(SHARD_ID_PROP), replica.getStr(NODE_NAME_PROP)));
                        }
                    }
                    SimpleOrderedMap success = (SimpleOrderedMap) deleteResult.get("success");
                    if (success != null) {
                        synchronized (results) {
                            results.add("success", success);
                        }
                    }
                });
            } catch (KeeperException e) {
                log.warn("Error deleting replica: " + r, e);
                cleanupLatch.countDown();
            } catch (Exception e) {
                log.warn("Error deleting replica: " + r, e);
                cleanupLatch.countDown();
                throw e;
            }
        }
        log.debug("Waiting for delete shard action to complete");
        cleanupLatch.await(5, TimeUnit.MINUTES);
        ZkNodeProps m = new ZkNodeProps(Overseer.QUEUE_OPERATION, DELETESHARD.toLower(), ZkStateReader.COLLECTION_PROP, collectionName, ZkStateReader.SHARD_ID_PROP, sliceId);
        ZkStateReader zkStateReader = ocmh.zkStateReader;
        Overseer.getStateUpdateQueue(zkStateReader.getZkClient()).offer(Utils.toJSON(m));
        // wait for a while until we don't see the shard
        TimeOut timeout = new TimeOut(30, TimeUnit.SECONDS);
        boolean removed = false;
        while (!timeout.hasTimedOut()) {
            Thread.sleep(100);
            DocCollection collection = zkStateReader.getClusterState().getCollection(collectionName);
            removed = collection.getSlice(sliceId) == null;
            if (removed) {
                // just a bit of time so it's more likely other readers see on return
                Thread.sleep(100);
                break;
            }
        }
        if (!removed) {
            throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Could not fully remove collection: " + collectionName + " shard: " + sliceId);
        }
        log.info("Successfully deleted collection: " + collectionName + ", shard: " + sliceId);
    } catch (SolrException e) {
        throw e;
    } catch (Exception e) {
        throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Error executing delete operation for collection: " + collectionName + " shard: " + sliceId, e);
    }
}

Example 18 with Slice

use of org.apache.solr.common.cloud.Slice in project lucene-solr by apache.

the class DeleteReplicaCmd method deleteReplicaBasedOnCount.

/**
   * Delete replicas based on count for a given collection. If a shard is passed, uses that
   * else deletes given num replicas across all shards for the given collection.
   */
void deleteReplicaBasedOnCount(ClusterState clusterState, ZkNodeProps message, NamedList results, Runnable onComplete, boolean parallel) throws KeeperException, InterruptedException {
    ocmh.checkRequired(message, COLLECTION_PROP, COUNT_PROP);
    int count = Integer.parseInt(message.getStr(COUNT_PROP));
    String collectionName = message.getStr(COLLECTION_PROP);
    String shard = message.getStr(SHARD_ID_PROP);
    DocCollection coll = clusterState.getCollection(collectionName);
    Slice slice = null;
    //Validate if shard is passed.
    if (shard != null) {
        slice = coll.getSlice(shard);
        if (slice == null) {
            throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "Invalid shard name : " + shard + " in collection : " + collectionName);
        }
    }
    Map<Slice, Set<String>> shardToReplicasMapping = new HashMap<Slice, Set<String>>();
    if (slice != null) {
        Set<String> replicasToBeDeleted = pickReplicasTobeDeleted(slice, shard, collectionName, count);
        shardToReplicasMapping.put(slice, replicasToBeDeleted);
    } else {
        //If there are many replicas left, remove the rest based on count.
        Collection<Slice> allSlices = coll.getSlices();
        for (Slice individualSlice : allSlices) {
            Set<String> replicasToBeDeleted = pickReplicasTobeDeleted(individualSlice, individualSlice.getName(), collectionName, count);
            shardToReplicasMapping.put(individualSlice, replicasToBeDeleted);
        }
    }
    for (Slice shardSlice : shardToReplicasMapping.keySet()) {
        String shardId = shardSlice.getName();
        Set<String> replicas = shardToReplicasMapping.get(shardSlice);
        //callDeleteReplica on all replicas
        for (String replica : replicas) {
            log.debug("Deleting replica {}  for shard {} based on count {}", replica, shardId, count);
            deleteCore(shardSlice, collectionName, replica, message, shard, results, onComplete, parallel);
        }
        results.add("shard_id", shardId);
        results.add("replicas_deleted", replicas);
    }
}

Example 19 with Slice

use of org.apache.solr.common.cloud.Slice in project lucene-solr by apache.

the class DeleteSnapshotCmd method call.

@Override
public void call(ClusterState state, ZkNodeProps message, NamedList results) throws Exception {
    String collectionName = message.getStr(COLLECTION_PROP);
    String commitName = message.getStr(CoreAdminParams.COMMIT_NAME);
    String asyncId = message.getStr(ASYNC);
    Map<String, String> requestMap = new HashMap<>();
    NamedList shardRequestResults = new NamedList();
    ShardHandler shardHandler = ocmh.shardHandlerFactory.getShardHandler();
    SolrZkClient zkClient = ocmh.overseer.getZkController().getZkClient();
    Optional<CollectionSnapshotMetaData> meta = SolrSnapshotManager.getCollectionLevelSnapshot(zkClient, collectionName, commitName);
    if (!meta.isPresent()) {
        // Snapshot not found. Nothing to do.
        return;
    }
    log.info("Deleting a snapshot for collection={} with commitName={}", collectionName, commitName);
    Set<String> existingCores = new HashSet<>();
    for (Slice s : ocmh.zkStateReader.getClusterState().getCollection(collectionName).getSlices()) {
        for (Replica r : s.getReplicas()) {
            existingCores.add(r.getCoreName());
        }
    }
    Set<String> coresWithSnapshot = new HashSet<>();
    for (CoreSnapshotMetaData m : meta.get().getReplicaSnapshots()) {
        if (existingCores.contains(m.getCoreName())) {
            coresWithSnapshot.add(m.getCoreName());
        }
    }
    log.info("Existing cores with snapshot for collection={} are {}", collectionName, existingCores);
    for (Slice slice : ocmh.zkStateReader.getClusterState().getCollection(collectionName).getSlices()) {
        for (Replica replica : slice.getReplicas()) {
            if (replica.getState() == State.DOWN) {
                // Since replica is down - no point sending a request.
                continue;
            }
            // replicas to contact at this point, we try on all replicas.
            if (meta.get().getStatus() == SnapshotStatus.InProgress || coresWithSnapshot.contains(replica.getCoreName())) {
                String coreName = replica.getStr(CORE_NAME_PROP);
                ModifiableSolrParams params = new ModifiableSolrParams();
                params.set(CoreAdminParams.ACTION, CoreAdminAction.DELETESNAPSHOT.toString());
                params.set(NAME, slice.getName());
                params.set(CORE_NAME_PROP, coreName);
                params.set(CoreAdminParams.COMMIT_NAME, commitName);
                log.info("Sending deletesnapshot request to core={} with commitName={}", coreName, commitName);
                ocmh.sendShardRequest(replica.getNodeName(), params, shardHandler, asyncId, requestMap);
            }
        }
    }
    ocmh.processResponses(shardRequestResults, shardHandler, false, null, asyncId, requestMap);
    NamedList success = (NamedList) shardRequestResults.get("success");
    List<CoreSnapshotMetaData> replicas = new ArrayList<>();
    if (success != null) {
        for (int i = 0; i < success.size(); i++) {
            NamedList resp = (NamedList) success.getVal(i);
            // Unfortunately async processing logic doesn't provide the "core" name automatically.
            String coreName = (String) resp.get("core");
            coresWithSnapshot.remove(coreName);
        }
    }
    if (!coresWithSnapshot.isEmpty()) {
        // One or more failures.
        log.warn("Failed to delete a snapshot for collection {} with commitName = {}. Snapshot could not be deleted for following cores {}", collectionName, commitName, coresWithSnapshot);
        List<CoreSnapshotMetaData> replicasWithSnapshot = new ArrayList<>();
        for (CoreSnapshotMetaData m : meta.get().getReplicaSnapshots()) {
            if (coresWithSnapshot.contains(m.getCoreName())) {
                replicasWithSnapshot.add(m);
            }
        }
        // Update the ZK meta-data to include only cores with the snapshot. This will enable users to figure out
        // which cores still contain the named snapshot.
        CollectionSnapshotMetaData newResult = new CollectionSnapshotMetaData(meta.get().getName(), SnapshotStatus.Failed, meta.get().getCreationDate(), replicasWithSnapshot);
        SolrSnapshotManager.updateCollectionLevelSnapshot(zkClient, collectionName, newResult);
        log.info("Saved snapshot information for collection={} with commitName={} in Zookeeper as follows", collectionName, commitName, Utils.toJSON(newResult));
        throw new SolrException(ErrorCode.SERVER_ERROR, "Failed to delete snapshot on cores " + coresWithSnapshot);
    } else {
        // Delete the ZK path so that we eliminate the references of this snapshot from collection level meta-data.
        SolrSnapshotManager.deleteCollectionLevelSnapshot(zkClient, collectionName, commitName);
        log.info("Deleted Zookeeper snapshot metdata for collection={} with commitName={}", collectionName, commitName);
        log.info("Successfully deleted snapshot for collection={} with commitName={}", collectionName, commitName);
    }
}

Example 20 with Slice

use of org.apache.solr.common.cloud.Slice in project lucene-solr by apache.

the class AddReplicaCmd method addReplica.

ZkNodeProps addReplica(ClusterState clusterState, ZkNodeProps message, NamedList results, Runnable onComplete) throws KeeperException, InterruptedException {
    log.info("addReplica() : {}", Utils.toJSONString(message));
    String collection = message.getStr(COLLECTION_PROP);
    String node = message.getStr(CoreAdminParams.NODE);
    String shard = message.getStr(SHARD_ID_PROP);
    String coreName = message.getStr(CoreAdminParams.NAME);
    Replica.Type replicaType = Replica.Type.valueOf(message.getStr(ZkStateReader.REPLICA_TYPE, Replica.Type.NRT.name()).toUpperCase(Locale.ROOT));
    boolean parallel = message.getBool("parallel", false);
    if (StringUtils.isBlank(coreName)) {
        coreName = message.getStr(CoreAdminParams.PROPERTY_PREFIX + CoreAdminParams.NAME);
    }
    final String asyncId = message.getStr(ASYNC);
    DocCollection coll = clusterState.getCollection(collection);
    if (coll == null) {
        throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "Collection: " + collection + " does not exist");
    }
    if (coll.getSlice(shard) == null) {
        throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "Collection: " + collection + " shard: " + shard + " does not exist");
    }
    ShardHandler shardHandler = ocmh.shardHandlerFactory.getShardHandler();
    boolean skipCreateReplicaInClusterState = message.getBool(SKIP_CREATE_REPLICA_IN_CLUSTER_STATE, false);
    // Kind of unnecessary, but it does put the logic of whether to override maxShardsPerNode in one place.
    if (!skipCreateReplicaInClusterState) {
        node = getNodesForNewReplicas(clusterState, collection, shard, 1, node, ocmh.overseer.getZkController().getCoreContainer()).get(0).nodeName;
    }
    log.info("Node Identified {} for creating new replica", node);
    if (!clusterState.liveNodesContain(node)) {
        throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "Node: " + node + " is not live");
    }
    if (coreName == null) {
        coreName = Assign.buildCoreName(coll, shard, replicaType);
    } else if (!skipCreateReplicaInClusterState) {
        //Validate that the core name is unique in that collection
        for (Slice slice : coll.getSlices()) {
            for (Replica replica : slice.getReplicas()) {
                String replicaCoreName = replica.getStr(CORE_NAME_PROP);
                if (coreName.equals(replicaCoreName)) {
                    throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "Another replica with the same core name already exists" + " for this collection");
                }
            }
        }
    }
    ModifiableSolrParams params = new ModifiableSolrParams();
    ZkStateReader zkStateReader = ocmh.zkStateReader;
    if (!Overseer.isLegacy(zkStateReader)) {
        if (!skipCreateReplicaInClusterState) {
            ZkNodeProps props = new ZkNodeProps(Overseer.QUEUE_OPERATION, ADDREPLICA.toLower(), ZkStateReader.COLLECTION_PROP, collection, ZkStateReader.SHARD_ID_PROP, shard, ZkStateReader.CORE_NAME_PROP, coreName, ZkStateReader.STATE_PROP, Replica.State.DOWN.toString(), ZkStateReader.BASE_URL_PROP, zkStateReader.getBaseUrlForNodeName(node), ZkStateReader.NODE_NAME_PROP, node, ZkStateReader.REPLICA_TYPE, replicaType.name());
            Overseer.getStateUpdateQueue(zkStateReader.getZkClient()).offer(Utils.toJSON(props));
        }
        params.set(CoreAdminParams.CORE_NODE_NAME, ocmh.waitToSeeReplicasInState(collection, Collections.singletonList(coreName)).get(coreName).getName());
    }
    String configName = zkStateReader.readConfigName(collection);
    String routeKey = message.getStr(ShardParams._ROUTE_);
    String dataDir = message.getStr(CoreAdminParams.DATA_DIR);
    String instanceDir = message.getStr(CoreAdminParams.INSTANCE_DIR);
    params.set(CoreAdminParams.ACTION, CoreAdminParams.CoreAdminAction.CREATE.toString());
    params.set(CoreAdminParams.NAME, coreName);
    params.set(COLL_CONF, configName);
    params.set(CoreAdminParams.COLLECTION, collection);
    params.set(CoreAdminParams.REPLICA_TYPE, replicaType.name());
    if (shard != null) {
        params.set(CoreAdminParams.SHARD, shard);
    } else if (routeKey != null) {
        Collection<Slice> slices = coll.getRouter().getSearchSlicesSingle(routeKey, null, coll);
        if (slices.isEmpty()) {
            throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "No active shard serving _route_=" + routeKey + " found");
        } else {
            params.set(CoreAdminParams.SHARD, slices.iterator().next().getName());
        }
    } else {
        throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "Specify either 'shard' or _route_ param");
    }
    if (dataDir != null) {
        params.set(CoreAdminParams.DATA_DIR, dataDir);
    }
    if (instanceDir != null) {
        params.set(CoreAdminParams.INSTANCE_DIR, instanceDir);
    }
    ocmh.addPropertyParams(message, params);
    // For tracking async calls.
    Map<String, String> requestMap = new HashMap<>();
    ocmh.sendShardRequest(node, params, shardHandler, asyncId, requestMap);
    final String fnode = node;
    final String fcoreName = coreName;
    Runnable runnable = () -> {
        ocmh.processResponses(results, shardHandler, true, "ADDREPLICA failed to create replica", asyncId, requestMap);
        ocmh.waitForCoreNodeName(collection, fnode, fcoreName);
        if (onComplete != null)
            onComplete.run();
    };
    if (!parallel) {
        runnable.run();
    } else {
        ocmh.tpe.submit(runnable);
    }
    return new ZkNodeProps(ZkStateReader.COLLECTION_PROP, collection, ZkStateReader.SHARD_ID_PROP, shard, ZkStateReader.CORE_NAME_PROP, coreName, ZkStateReader.NODE_NAME_PROP, node);
}