Examples with PMetaDataEntity org.apache.phoenix.schema.PMetaDataEntity used on opensource projects

Example 21 with PMetaDataEntity

use of org.apache.phoenix.schema.PMetaDataEntity in project phoenix by apache.

the class MetaDataEndpointImpl method createFunction.

@Override
public void createFunction(RpcController controller, CreateFunctionRequest request, RpcCallback<MetaDataResponse> done) {
    MetaDataResponse.Builder builder = MetaDataResponse.newBuilder();
    byte[][] rowKeyMetaData = new byte[2][];
    byte[] functionName = null;
    try {
        List<Mutation> functionMetaData = ProtobufUtil.getMutations(request);
        boolean temporaryFunction = request.getTemporary();
        MetaDataUtil.getTenantIdAndFunctionName(functionMetaData, rowKeyMetaData);
        byte[] tenantIdBytes = rowKeyMetaData[PhoenixDatabaseMetaData.TENANT_ID_INDEX];
        functionName = rowKeyMetaData[PhoenixDatabaseMetaData.FUNTION_NAME_INDEX];
        byte[] lockKey = SchemaUtil.getFunctionKey(tenantIdBytes, functionName);
        Region region = env.getRegion();
        MetaDataMutationResult result = checkFunctionKeyInRegion(lockKey, region);
        if (result != null) {
            done.run(MetaDataMutationResult.toProto(result));
            return;
        }
        List<RowLock> locks = Lists.newArrayList();
        long clientTimeStamp = MetaDataUtil.getClientTimeStamp(functionMetaData);
        try {
            acquireLock(region, lockKey, locks);
            // Get as of latest timestamp so we can detect if we have a newer function that already
            // exists without making an additional query
            ImmutableBytesPtr cacheKey = new FunctionBytesPtr(lockKey);
            PFunction function = loadFunction(env, lockKey, cacheKey, clientTimeStamp, clientTimeStamp, request.getReplace(), functionMetaData);
            if (function != null) {
                if (function.getTimeStamp() < clientTimeStamp) {
                    // continue
                    if (!isFunctionDeleted(function)) {
                        builder.setReturnCode(MetaDataProtos.MutationCode.FUNCTION_ALREADY_EXISTS);
                        builder.setMutationTime(EnvironmentEdgeManager.currentTimeMillis());
                        builder.addFunction(PFunction.toProto(function));
                        done.run(builder.build());
                        if (!request.getReplace()) {
                            return;
                        }
                    }
                } else {
                    builder.setReturnCode(MetaDataProtos.MutationCode.NEWER_FUNCTION_FOUND);
                    builder.setMutationTime(EnvironmentEdgeManager.currentTimeMillis());
                    builder.addFunction(PFunction.toProto(function));
                    done.run(builder.build());
                    return;
                }
            }
            // Don't store function info for temporary functions.
            if (!temporaryFunction) {
                mutateRowsWithLocks(region, functionMetaData, Collections.<byte[]>emptySet(), HConstants.NO_NONCE, HConstants.NO_NONCE);
            }
            // Invalidate the cache - the next getFunction call will add it
            // TODO: consider loading the function that was just created here, patching up the parent function, and updating the cache
            Cache<ImmutableBytesPtr, PMetaDataEntity> metaDataCache = GlobalCache.getInstance(this.env).getMetaDataCache();
            metaDataCache.invalidate(cacheKey);
            // Get timeStamp from mutations - the above method sets it if it's unset
            long currentTimeStamp = MetaDataUtil.getClientTimeStamp(functionMetaData);
            builder.setReturnCode(MetaDataProtos.MutationCode.FUNCTION_NOT_FOUND);
            builder.setMutationTime(currentTimeStamp);
            done.run(builder.build());
            return;
        } finally {
            releaseRowLocks(region, locks);
        }
    } catch (Throwable t) {
        logger.error("createFunction failed", t);
        ProtobufUtil.setControllerException(controller, ServerUtil.createIOException(Bytes.toString(functionName), t));
    }
}

Example 22 with PMetaDataEntity

use of org.apache.phoenix.schema.PMetaDataEntity in project phoenix by apache.

the class MetaDataEndpointImpl method loadTable.

private PTable loadTable(RegionCoprocessorEnvironment env, byte[] key, ImmutableBytesPtr cacheKey, long clientTimeStamp, long asOfTimeStamp, int clientVersion) throws IOException, SQLException {
    Region region = env.getRegion();
    Cache<ImmutableBytesPtr, PMetaDataEntity> metaDataCache = GlobalCache.getInstance(this.env).getMetaDataCache();
    PTable table = (PTable) metaDataCache.getIfPresent(cacheKey);
    // We always cache the latest version - fault in if not in cache
    if (table != null || (table = buildTable(key, cacheKey, region, asOfTimeStamp, clientVersion)) != null) {
        return table;
    }
    // found
    if (table == null && (table = buildDeletedTable(key, cacheKey, region, clientTimeStamp)) != null) {
        return table;
    }
    return null;
}

Example 23 with PMetaDataEntity

use of org.apache.phoenix.schema.PMetaDataEntity in project phoenix by apache.

the class MetaDataEndpointImpl method dropSchema.

@Override
public void dropSchema(RpcController controller, DropSchemaRequest request, RpcCallback<MetaDataResponse> done) {
    String schemaName = null;
    try {
        List<Mutation> schemaMetaData = ProtobufUtil.getMutations(request);
        schemaName = request.getSchemaName();
        getCoprocessorHost().preDropSchema(schemaName);
        byte[] lockKey = SchemaUtil.getSchemaKey(schemaName);
        Region region = env.getRegion();
        MetaDataMutationResult result = checkSchemaKeyInRegion(lockKey, region);
        if (result != null) {
            done.run(MetaDataMutationResult.toProto(result));
            return;
        }
        List<RowLock> locks = Lists.newArrayList();
        long clientTimeStamp = MetaDataUtil.getClientTimeStamp(schemaMetaData);
        try {
            acquireLock(region, lockKey, locks);
            List<ImmutableBytesPtr> invalidateList = new ArrayList<ImmutableBytesPtr>(1);
            result = doDropSchema(clientTimeStamp, schemaName, lockKey, schemaMetaData, invalidateList);
            if (result.getMutationCode() != MutationCode.SCHEMA_ALREADY_EXISTS) {
                done.run(MetaDataMutationResult.toProto(result));
                return;
            }
            mutateRowsWithLocks(region, schemaMetaData, Collections.<byte[]>emptySet(), HConstants.NO_NONCE, HConstants.NO_NONCE);
            Cache<ImmutableBytesPtr, PMetaDataEntity> metaDataCache = GlobalCache.getInstance(this.env).getMetaDataCache();
            long currentTime = MetaDataUtil.getClientTimeStamp(schemaMetaData);
            for (ImmutableBytesPtr ptr : invalidateList) {
                metaDataCache.invalidate(ptr);
                metaDataCache.put(ptr, newDeletedSchemaMarker(currentTime));
            }
            done.run(MetaDataMutationResult.toProto(result));
            return;
        } finally {
            releaseRowLocks(region, locks);
        }
    } catch (Throwable t) {
        logger.error("drop schema failed:", t);
        ProtobufUtil.setControllerException(controller, ServerUtil.createIOException(schemaName, t));
    }
}

Example 24 with PMetaDataEntity

use of org.apache.phoenix.schema.PMetaDataEntity in project phoenix by apache.

the class MetaDataEndpointImpl method buildSchemas.

private List<PSchema> buildSchemas(List<byte[]> keys, Region region, long clientTimeStamp, ImmutableBytesPtr cacheKey) throws IOException, SQLException {
    List<KeyRange> keyRanges = Lists.newArrayListWithExpectedSize(keys.size());
    for (byte[] key : keys) {
        byte[] stopKey = ByteUtil.concat(key, QueryConstants.SEPARATOR_BYTE_ARRAY);
        ByteUtil.nextKey(stopKey, stopKey.length);
        keyRanges.add(PVarbinary.INSTANCE.getKeyRange(key, true, stopKey, false));
    }
    Scan scan = new Scan();
    scan.setTimeRange(MIN_TABLE_TIMESTAMP, clientTimeStamp);
    ScanRanges scanRanges = ScanRanges.createPointLookup(keyRanges);
    scanRanges.initializeScan(scan);
    scan.setFilter(scanRanges.getSkipScanFilter());
    Cache<ImmutableBytesPtr, PMetaDataEntity> metaDataCache = GlobalCache.getInstance(this.env).getMetaDataCache();
    List<PSchema> schemas = new ArrayList<PSchema>();
    PSchema schema = null;
    try (RegionScanner scanner = region.getScanner(scan)) {
        for (int i = 0; i < keys.size(); i++) {
            schema = null;
            schema = getSchema(scanner, clientTimeStamp);
            if (schema == null) {
                return null;
            }
            metaDataCache.put(cacheKey, schema);
            schemas.add(schema);
        }
        return schemas;
    }
}

Example 25 with PMetaDataEntity

use of org.apache.phoenix.schema.PMetaDataEntity in project phoenix by apache.

the class MetaDataEndpointImpl method createTable.

@Override
public void createTable(RpcController controller, CreateTableRequest request, RpcCallback<MetaDataResponse> done) {
    MetaDataResponse.Builder builder = MetaDataResponse.newBuilder();
    byte[][] rowKeyMetaData = new byte[3][];
    byte[] schemaName = null;
    byte[] tableName = null;
    try {
        int clientVersion = request.getClientVersion();
        List<Mutation> tableMetadata = ProtobufUtil.getMutations(request);
        MetaDataUtil.getTenantIdAndSchemaAndTableName(tableMetadata, rowKeyMetaData);
        byte[] tenantIdBytes = rowKeyMetaData[PhoenixDatabaseMetaData.TENANT_ID_INDEX];
        schemaName = rowKeyMetaData[PhoenixDatabaseMetaData.SCHEMA_NAME_INDEX];
        tableName = rowKeyMetaData[PhoenixDatabaseMetaData.TABLE_NAME_INDEX];
        boolean isNamespaceMapped = MetaDataUtil.isNameSpaceMapped(tableMetadata, GenericKeyValueBuilder.INSTANCE, new ImmutableBytesWritable());
        final IndexType indexType = MetaDataUtil.getIndexType(tableMetadata, GenericKeyValueBuilder.INSTANCE, new ImmutableBytesWritable());
        byte[] parentSchemaName = null;
        byte[] parentTableName = null;
        PTableType tableType = MetaDataUtil.getTableType(tableMetadata, GenericKeyValueBuilder.INSTANCE, new ImmutableBytesWritable());
        byte[] parentTableKey = null;
        Mutation viewPhysicalTableRow = null;
        Set<TableName> indexes = new HashSet<TableName>();
        ;
        byte[] cPhysicalName = SchemaUtil.getPhysicalHBaseTableName(schemaName, tableName, isNamespaceMapped).getBytes();
        byte[] cParentPhysicalName = null;
        if (tableType == PTableType.VIEW) {
            byte[][] parentSchemaTableNames = new byte[3][];
            byte[][] parentPhysicalSchemaTableNames = new byte[3][];
            /*
                 * For a view, we lock the base physical table row. For a mapped view, there is 
                 * no link present to the physical table. So the viewPhysicalTableRow is null
                 * in that case.
                 */
            viewPhysicalTableRow = getPhysicalTableRowForView(tableMetadata, parentSchemaTableNames, parentPhysicalSchemaTableNames);
            long clientTimeStamp = MetaDataUtil.getClientTimeStamp(tableMetadata);
            if (parentPhysicalSchemaTableNames[2] != null) {
                parentTableKey = SchemaUtil.getTableKey(ByteUtil.EMPTY_BYTE_ARRAY, parentPhysicalSchemaTableNames[1], parentPhysicalSchemaTableNames[2]);
                PTable parentTable = getTable(env, parentTableKey, new ImmutableBytesPtr(parentTableKey), clientTimeStamp, clientTimeStamp, clientVersion);
                if (parentTable == null) {
                    builder.setReturnCode(MetaDataProtos.MutationCode.PARENT_TABLE_NOT_FOUND);
                    builder.setMutationTime(EnvironmentEdgeManager.currentTimeMillis());
                    done.run(builder.build());
                    return;
                }
                cParentPhysicalName = parentTable.getPhysicalName().getBytes();
                if (parentSchemaTableNames[2] != null && Bytes.compareTo(parentSchemaTableNames[2], parentPhysicalSchemaTableNames[2]) != 0) {
                    // if view is created on view
                    byte[] parentKey = SchemaUtil.getTableKey(parentSchemaTableNames[0] == null ? ByteUtil.EMPTY_BYTE_ARRAY : parentSchemaTableNames[0], parentSchemaTableNames[1], parentSchemaTableNames[2]);
                    parentTable = getTable(env, parentKey, new ImmutableBytesPtr(parentKey), clientTimeStamp, clientTimeStamp, clientVersion);
                    if (parentTable == null) {
                        // it could be a global view
                        parentKey = SchemaUtil.getTableKey(ByteUtil.EMPTY_BYTE_ARRAY, parentSchemaTableNames[1], parentSchemaTableNames[2]);
                        parentTable = getTable(env, parentKey, new ImmutableBytesPtr(parentKey), clientTimeStamp, clientTimeStamp, clientVersion);
                    }
                }
                if (parentTable == null) {
                    builder.setReturnCode(MetaDataProtos.MutationCode.PARENT_TABLE_NOT_FOUND);
                    builder.setMutationTime(EnvironmentEdgeManager.currentTimeMillis());
                    done.run(builder.build());
                    return;
                }
                for (PTable index : parentTable.getIndexes()) {
                    indexes.add(TableName.valueOf(index.getPhysicalName().getBytes()));
                }
            } else {
                // Mapped View
                cParentPhysicalName = SchemaUtil.getTableNameAsBytes(schemaName, tableName);
            }
            parentSchemaName = parentPhysicalSchemaTableNames[1];
            parentTableName = parentPhysicalSchemaTableNames[2];
        } else if (tableType == PTableType.INDEX) {
            parentSchemaName = schemaName;
            /* 
                 * For an index we lock the parent table's row which could be a physical table or a view.
                 * If the parent table is a physical table, then the tenantIdBytes is empty because
                 * we allow creating an index with a tenant connection only if the parent table is a view.
                 */
            parentTableName = MetaDataUtil.getParentTableName(tableMetadata);
            parentTableKey = SchemaUtil.getTableKey(tenantIdBytes, parentSchemaName, parentTableName);
            long clientTimeStamp = MetaDataUtil.getClientTimeStamp(tableMetadata);
            PTable parentTable = loadTable(env, parentTableKey, new ImmutableBytesPtr(parentTableKey), clientTimeStamp, clientTimeStamp, clientVersion);
            if (IndexType.LOCAL == indexType) {
                cPhysicalName = parentTable.getPhysicalName().getBytes();
                cParentPhysicalName = parentTable.getPhysicalName().getBytes();
            } else if (parentTable.getType() == PTableType.VIEW) {
                cPhysicalName = MetaDataUtil.getViewIndexPhysicalName(parentTable.getPhysicalName().getBytes());
                cParentPhysicalName = parentTable.getPhysicalName().getBytes();
            } else {
                cParentPhysicalName = SchemaUtil.getPhysicalHBaseTableName(parentSchemaName, parentTableName, isNamespaceMapped).getBytes();
            }
        }
        getCoprocessorHost().preCreateTable(Bytes.toString(tenantIdBytes), SchemaUtil.getTableName(schemaName, tableName), (tableType == PTableType.VIEW) ? null : TableName.valueOf(cPhysicalName), cParentPhysicalName == null ? null : TableName.valueOf(cParentPhysicalName), tableType, /* TODO: During inital create we may not need the family map */
        Collections.<byte[]>emptySet(), indexes);
        Region region = env.getRegion();
        List<RowLock> locks = Lists.newArrayList();
        // Place a lock using key for the table to be created
        byte[] tableKey = SchemaUtil.getTableKey(tenantIdBytes, schemaName, tableName);
        try {
            acquireLock(region, tableKey, locks);
            // If the table key resides outside the region, return without doing anything
            MetaDataMutationResult result = checkTableKeyInRegion(tableKey, region);
            if (result != null) {
                done.run(MetaDataMutationResult.toProto(result));
                return;
            }
            long clientTimeStamp = MetaDataUtil.getClientTimeStamp(tableMetadata);
            ImmutableBytesPtr parentCacheKey = null;
            PTable parentTable = null;
            if (parentTableName != null) {
                // Check if the parent table resides in the same region. If not, don't worry about locking the parent table row
                // or loading the parent table. For a view, the parent table that needs to be locked is the base physical table.
                // For an index on view, the view header row needs to be locked.
                result = checkTableKeyInRegion(parentTableKey, region);
                if (result == null) {
                    acquireLock(region, parentTableKey, locks);
                    parentCacheKey = new ImmutableBytesPtr(parentTableKey);
                    parentTable = loadTable(env, parentTableKey, parentCacheKey, clientTimeStamp, clientTimeStamp, clientVersion);
                    if (parentTable == null || isTableDeleted(parentTable)) {
                        builder.setReturnCode(MetaDataProtos.MutationCode.PARENT_TABLE_NOT_FOUND);
                        builder.setMutationTime(EnvironmentEdgeManager.currentTimeMillis());
                        done.run(builder.build());
                        return;
                    }
                    // make sure we haven't gone over our threshold for indexes on this table.
                    if (execeededIndexQuota(tableType, parentTable)) {
                        builder.setReturnCode(MetaDataProtos.MutationCode.TOO_MANY_INDEXES);
                        builder.setMutationTime(EnvironmentEdgeManager.currentTimeMillis());
                        done.run(builder.build());
                        return;
                    }
                    long parentTableSeqNumber;
                    if (tableType == PTableType.VIEW && viewPhysicalTableRow != null && request.hasClientVersion()) {
                        // Starting 4.5, the client passes the sequence number of the physical table in the table metadata.
                        parentTableSeqNumber = MetaDataUtil.getSequenceNumber(viewPhysicalTableRow);
                    } else if (tableType == PTableType.VIEW && !request.hasClientVersion()) {
                        // Before 4.5, due to a bug, the parent table key wasn't available.
                        // So don't do anything and prevent the exception from being thrown.
                        parentTableSeqNumber = parentTable.getSequenceNumber();
                    } else {
                        parentTableSeqNumber = MetaDataUtil.getParentSequenceNumber(tableMetadata);
                    }
                    // If parent table isn't at the expected sequence number, then return
                    if (parentTable.getSequenceNumber() != parentTableSeqNumber) {
                        builder.setReturnCode(MetaDataProtos.MutationCode.CONCURRENT_TABLE_MUTATION);
                        builder.setMutationTime(EnvironmentEdgeManager.currentTimeMillis());
                        builder.setTable(PTableImpl.toProto(parentTable));
                        done.run(builder.build());
                        return;
                    }
                }
            }
            // Load child table next
            ImmutableBytesPtr cacheKey = new ImmutableBytesPtr(tableKey);
            // Get as of latest timestamp so we can detect if we have a newer table that already
            // exists without making an additional query
            PTable table = loadTable(env, tableKey, cacheKey, clientTimeStamp, HConstants.LATEST_TIMESTAMP, clientVersion);
            if (table != null) {
                if (table.getTimeStamp() < clientTimeStamp) {
                    // continue
                    if (!isTableDeleted(table)) {
                        builder.setReturnCode(MetaDataProtos.MutationCode.TABLE_ALREADY_EXISTS);
                        builder.setMutationTime(EnvironmentEdgeManager.currentTimeMillis());
                        builder.setTable(PTableImpl.toProto(table));
                        done.run(builder.build());
                        return;
                    }
                } else {
                    builder.setReturnCode(MetaDataProtos.MutationCode.NEWER_TABLE_FOUND);
                    builder.setMutationTime(EnvironmentEdgeManager.currentTimeMillis());
                    builder.setTable(PTableImpl.toProto(table));
                    done.run(builder.build());
                    return;
                }
            }
            // sends over depending on its base physical table.
            if (tableType != PTableType.VIEW) {
                UpgradeUtil.addRowKeyOrderOptimizableCell(tableMetadata, tableKey, clientTimeStamp);
            }
            // tableMetadata and set the view statement and partition column correctly
            if (parentTable != null && parentTable.getAutoPartitionSeqName() != null) {
                long autoPartitionNum = 1;
                try (PhoenixConnection connection = QueryUtil.getConnectionOnServer(env.getConfiguration()).unwrap(PhoenixConnection.class);
                    Statement stmt = connection.createStatement()) {
                    String seqName = parentTable.getAutoPartitionSeqName();
                    // Not going through the standard route of using statement.execute() as that code path
                    // is blocked if the metadata hasn't been been upgraded to the new minor release.
                    String seqNextValueSql = String.format("SELECT NEXT VALUE FOR %s", seqName);
                    PhoenixStatement ps = stmt.unwrap(PhoenixStatement.class);
                    QueryPlan plan = ps.compileQuery(seqNextValueSql);
                    ResultIterator resultIterator = plan.iterator();
                    PhoenixResultSet rs = ps.newResultSet(resultIterator, plan.getProjector(), plan.getContext());
                    rs.next();
                    autoPartitionNum = rs.getLong(1);
                } catch (SequenceNotFoundException e) {
                    builder.setReturnCode(MetaDataProtos.MutationCode.AUTO_PARTITION_SEQUENCE_NOT_FOUND);
                    builder.setMutationTime(EnvironmentEdgeManager.currentTimeMillis());
                    done.run(builder.build());
                    return;
                }
                PColumn autoPartitionCol = parentTable.getPKColumns().get(MetaDataUtil.getAutoPartitionColIndex(parentTable));
                if (!PLong.INSTANCE.isCoercibleTo(autoPartitionCol.getDataType(), autoPartitionNum)) {
                    builder.setReturnCode(MetaDataProtos.MutationCode.CANNOT_COERCE_AUTO_PARTITION_ID);
                    builder.setMutationTime(EnvironmentEdgeManager.currentTimeMillis());
                    done.run(builder.build());
                    return;
                }
                builder.setAutoPartitionNum(autoPartitionNum);
                // set the VIEW STATEMENT column of the header row
                Put tableHeaderPut = MetaDataUtil.getPutOnlyTableHeaderRow(tableMetadata);
                NavigableMap<byte[], List<Cell>> familyCellMap = tableHeaderPut.getFamilyCellMap();
                List<Cell> cells = familyCellMap.get(TABLE_FAMILY_BYTES);
                Cell cell = cells.get(0);
                String autoPartitionWhere = QueryUtil.getViewPartitionClause(MetaDataUtil.getAutoPartitionColumnName(parentTable), autoPartitionNum);
                String hbaseVersion = VersionInfo.getVersion();
                ImmutableBytesPtr ptr = new ImmutableBytesPtr();
                KeyValueBuilder kvBuilder = KeyValueBuilder.get(hbaseVersion);
                MetaDataUtil.getMutationValue(tableHeaderPut, VIEW_STATEMENT_BYTES, kvBuilder, ptr);
                byte[] value = ptr.copyBytesIfNecessary();
                byte[] viewStatement = null;
                // if we have an existing where clause add the auto partition where clause to it
                if (!Bytes.equals(value, QueryConstants.EMPTY_COLUMN_VALUE_BYTES)) {
                    viewStatement = Bytes.add(value, Bytes.toBytes(" AND "), Bytes.toBytes(autoPartitionWhere));
                } else {
                    viewStatement = Bytes.toBytes(QueryUtil.getViewStatement(parentTable.getSchemaName().getString(), parentTable.getTableName().getString(), autoPartitionWhere));
                }
                Cell viewStatementCell = new KeyValue(cell.getRow(), cell.getFamily(), VIEW_STATEMENT_BYTES, cell.getTimestamp(), Type.codeToType(cell.getTypeByte()), viewStatement);
                cells.add(viewStatementCell);
                // set the IS_VIEW_REFERENCED column of the auto partition column row
                Put autoPartitionPut = MetaDataUtil.getPutOnlyAutoPartitionColumn(parentTable, tableMetadata);
                familyCellMap = autoPartitionPut.getFamilyCellMap();
                cells = familyCellMap.get(TABLE_FAMILY_BYTES);
                cell = cells.get(0);
                PDataType dataType = autoPartitionCol.getDataType();
                Object val = dataType.toObject(autoPartitionNum, PLong.INSTANCE);
                byte[] bytes = new byte[dataType.getByteSize() + 1];
                dataType.toBytes(val, bytes, 0);
                Cell viewConstantCell = new KeyValue(cell.getRow(), cell.getFamily(), VIEW_CONSTANT_BYTES, cell.getTimestamp(), Type.codeToType(cell.getTypeByte()), bytes);
                cells.add(viewConstantCell);
            }
            Short indexId = null;
            if (request.hasAllocateIndexId() && request.getAllocateIndexId()) {
                String tenantIdStr = tenantIdBytes.length == 0 ? null : Bytes.toString(tenantIdBytes);
                try (PhoenixConnection connection = QueryUtil.getConnectionOnServer(env.getConfiguration()).unwrap(PhoenixConnection.class)) {
                    PName physicalName = parentTable.getPhysicalName();
                    int nSequenceSaltBuckets = connection.getQueryServices().getSequenceSaltBuckets();
                    SequenceKey key = MetaDataUtil.getViewIndexSequenceKey(tenantIdStr, physicalName, nSequenceSaltBuckets, parentTable.isNamespaceMapped());
                    // TODO Review Earlier sequence was created at (SCN-1/LATEST_TIMESTAMP) and incremented at the client max(SCN,dataTable.getTimestamp), but it seems we should
                    // use always LATEST_TIMESTAMP to avoid seeing wrong sequence values by different connection having SCN
                    // or not.
                    long sequenceTimestamp = HConstants.LATEST_TIMESTAMP;
                    try {
                        connection.getQueryServices().createSequence(key.getTenantId(), key.getSchemaName(), key.getSequenceName(), Short.MIN_VALUE, 1, 1, Long.MIN_VALUE, Long.MAX_VALUE, false, sequenceTimestamp);
                    } catch (SequenceAlreadyExistsException e) {
                    }
                    long[] seqValues = new long[1];
                    SQLException[] sqlExceptions = new SQLException[1];
                    connection.getQueryServices().incrementSequences(Collections.singletonList(new SequenceAllocation(key, 1)), HConstants.LATEST_TIMESTAMP, seqValues, sqlExceptions);
                    if (sqlExceptions[0] != null) {
                        throw sqlExceptions[0];
                    }
                    long seqValue = seqValues[0];
                    if (seqValue > Short.MAX_VALUE) {
                        builder.setReturnCode(MetaDataProtos.MutationCode.TOO_MANY_INDEXES);
                        builder.setMutationTime(EnvironmentEdgeManager.currentTimeMillis());
                        done.run(builder.build());
                        return;
                    }
                    Put tableHeaderPut = MetaDataUtil.getPutOnlyTableHeaderRow(tableMetadata);
                    NavigableMap<byte[], List<Cell>> familyCellMap = tableHeaderPut.getFamilyCellMap();
                    List<Cell> cells = familyCellMap.get(TABLE_FAMILY_BYTES);
                    Cell cell = cells.get(0);
                    PDataType dataType = MetaDataUtil.getViewIndexIdDataType();
                    Object val = dataType.toObject(seqValue, PLong.INSTANCE);
                    byte[] bytes = new byte[dataType.getByteSize() + 1];
                    dataType.toBytes(val, bytes, 0);
                    Cell indexIdCell = new KeyValue(cell.getRow(), cell.getFamily(), VIEW_INDEX_ID_BYTES, cell.getTimestamp(), Type.codeToType(cell.getTypeByte()), bytes);
                    cells.add(indexIdCell);
                    indexId = (short) seqValue;
                }
            }
            // TODO: Switch this to HRegion#batchMutate when we want to support indexes on the
            // system table. Basically, we get all the locks that we don't already hold for all the
            // tableMetadata rows. This ensures we don't have deadlock situations (ensuring
            // primary and then index table locks are held, in that order). For now, we just don't support
            // indexing on the system table. This is an issue because of the way we manage batch mutation
            // in the Indexer.
            mutateRowsWithLocks(region, tableMetadata, Collections.<byte[]>emptySet(), HConstants.NO_NONCE, HConstants.NO_NONCE);
            // Invalidate the cache - the next getTable call will add it
            // TODO: consider loading the table that was just created here, patching up the parent table, and updating the cache
            Cache<ImmutableBytesPtr, PMetaDataEntity> metaDataCache = GlobalCache.getInstance(this.env).getMetaDataCache();
            if (parentCacheKey != null) {
                metaDataCache.invalidate(parentCacheKey);
            }
            metaDataCache.invalidate(cacheKey);
            // Get timeStamp from mutations - the above method sets it if it's unset
            long currentTimeStamp = MetaDataUtil.getClientTimeStamp(tableMetadata);
            builder.setReturnCode(MetaDataProtos.MutationCode.TABLE_NOT_FOUND);
            if (indexId != null) {
                builder.setViewIndexId(indexId);
            }
            builder.setMutationTime(currentTimeStamp);
            done.run(builder.build());
            return;
        } finally {
            releaseRowLocks(region, locks);
        }
    } catch (Throwable t) {
        logger.error("createTable failed", t);
        ProtobufUtil.setControllerException(controller, ServerUtil.createIOException(SchemaUtil.getTableName(schemaName, tableName), t));
    }
}