ScalarDB Schema Loader

ScalarDB has its own data model and schema that maps to the implementation-specific data model and schema. In addition, ScalarDB stores internal metadata, such as transaction IDs, record versions, and transaction statuses, to manage transaction logs and statuses when you use the Consensus Commit transaction manager.

Since managing the schema mapping and metadata for transactions can be difficult, you can use ScalarDB Schema Loader, which is a tool to create schemas that doesn't require you to need in-depth knowledge about schema mapping or metadata.

You have two options to specify general CLI options in Schema Loader:

• Pass the ScalarDB properties file and database-specific or storage-specific options.
• Pass database-specific or storage-specific options without the ScalarDB properties file. (Deprecated)

注記

This tool supports only basic options to create, delete, repair, or alter a table. If you want to use the advanced features of a database, you must alter your tables with a database-specific tool after creating the tables with this tool.

Set up Schema Loader

Select your preferred method to set up Schema Loader, and follow the instructions.

Fat JAR

You can download the release versions of Schema Loader from the ScalarDB Releases page.

Docker container

You can pull the Docker image from the Scalar container registry by running the following command, replacing the contents in the angle brackets as described:

$ docker run --rm -v <PATH_TO_YOUR_LOCAL_SCHEMA_FILE>:<PATH_TO_SCHEMA_FILE_DOCKER> [-v <PATH_TO_LOCAL_SCALARDB_PROPERTIES_FILE>:<PATH_TO_SCALARDB_PROPERTIES_FILE_IN_DOCKER>] ghcr.io/scalar-labs/scalardb-schema-loader:<VERSION> <COMMAND_ARGUMENTS>

注記

You can specify the same command arguments even if you use the fat JAR or the container. In the Available commands section, the JAR is used, but you can run the commands by using the container in the same way by replacing java -jar scalardb-schema-loader-<VERSION>.jar with docker run --rm -v <PATH_TO_YOUR_LOCAL_SCHEMA_FILE>:<PATH_TO_SCHEMA_FILE_DOCKER> [-v <PATH_TO_LOCAL_SCALARDB_PROPERTIES_FILE>:<PATH_TO_SCALARDB_PROPERTIES_FILE_IN_DOCKER>] ghcr.io/scalar-labs/scalardb-schema-loader:<VERSION>.

Run Schema Loader

This section explains how to run Schema Loader.

Available commands

Select how you would like to configure Schema Loader for your database. The preferred method is to use the properties file since other, database-specific methods are deprecated.

The following commands are available when using the properties file:

Usage: java -jar scalardb-schema-loader-<VERSION>.jar [-D] [--coordinator]
       [--no-backup] [--no-scaling] -c=<configPath>
       [--compaction-strategy=<compactionStrategy>] [-f=<schemaFile>]
       [--replication-factor=<replicaFactor>]
       [--replication-strategy=<replicationStrategy>] [--ru=<ru>]
Create/Delete schemas in the storage defined in the config file
  -A, --alter         Alter tables : it will add new columns and create/delete
                        secondary index for existing tables. It compares the
                        provided table schema to the existing schema to decide
                        which columns need to be added and which indexes need
                        to be created or deleted
  -c, --config=<configPath>
                      Path to the config file of ScalarDB
      --compaction-strategy=<compactionStrategy>
                      The compaction strategy, must be LCS, STCS or TWCS
                        (supported in Cassandra)
      --coordinator   Create/delete/repair Coordinator tables
  -D, --delete-all    Delete tables
  -f, --schema-file=<schemaFile>
                      Path to the schema json file
      --no-backup     Disable continuous backup (supported in DynamoDB)
      --no-scaling    Disable auto-scaling (supported in DynamoDB, Cosmos DB)
      --repair-all    Repair tables : it repairs the table metadata of
                               existing tables. When using Cosmos DB, it
                               additionally repairs stored procedure attached
                               to each table
      --replication-factor=<replicaFactor>
                      The replication factor (supported in Cassandra)
      --replication-strategy=<replicationStrategy>
                      The replication strategy, must be SimpleStrategy or
                        NetworkTopologyStrategy (supported in Cassandra)
      --ru=<ru>       Base resource unit (supported in DynamoDB, Cosmos DB)

For a sample properties file, see database.properties.

注記

The following database-specific methods have been deprecated. Please use the commands for configuring the properties file instead.

Cassandra

Usage: java -jar scalardb-schema-loader-<VERSION>.jar --cassandra [-D]
      [-c=<compactionStrategy>] -f=<schemaFile> -h=<hostIp>
      [-n=<replicationStrategy>] [-p=<password>] [-P=<port>]
      [-R=<replicationFactor>] [-u=<user>]
Create/Delete Cassandra schemas
  -A, --alter         Alter tables : it will add new columns and create/delete
                        secondary index for existing tables. It compares the
                        provided table schema to the existing schema to decide
                        which columns need to be added and which indexes need
                        to be created or deleted
  -c, --compaction-strategy=<compactionStrategy>
                        Cassandra compaction strategy, must be LCS, STCS or TWCS
  -D, --delete-all      Delete tables
  -f, --schema-file=<schemaFile>
                        Path to the schema json file
  -h, --host=<hostIp>   Cassandra host IP
  -n, --network-strategy=<replicationStrategy>
                        Cassandra network strategy, must be SimpleStrategy or
                          NetworkTopologyStrategy
  -p, --password=<password>
                        Cassandra password
  -P, --port=<port>     Cassandra Port
  -R, --replication-factor=<replicationFactor>
                        Cassandra replication factor
      --repair-all     Repair tables : it repairs the table metadata of
                        existing tables
  -u, --user=<user>     Cassandra user

Cosmos DB for NoSQL

Usage: java -jar scalardb-schema-loader-<VERSION>.jar --cosmos [-D]
      [--no-scaling] -f=<schemaFile> -h=<uri> -p=<key> [-r=<ru>]
Create/Delete Cosmos DB schemas
  -A, --alter         Alter tables : it will add new columns and create/delete
                        secondary index for existing tables. It compares the
                        provided table schema to the existing schema to decide
                        which columns need to be added and which indexes need
                        to be created or deleted
  -D, --delete-all       Delete tables
  -f, --schema-file=<schemaFile>
                        Path to the schema json file
  -h, --host=<uri>       Cosmos DB account URI
      --no-scaling       Disable auto-scaling for Cosmos DB
  -p, --password=<key>   Cosmos DB key
  -r, --ru=<ru>          Base resource unit
      --repair-all       Repair tables : it repairs the table metadata of
                          existing tables and repairs stored procedure
                          attached to each table

DynamoDB

Usage: java -jar scalardb-schema-loader-<VERSION>.jar --dynamo [-D]
      [--no-backup] [--no-scaling] [--endpoint-override=<endpointOverride>]
      -f=<schemaFile> -p=<awsSecKey> [-r=<ru>] --region=<awsRegion>
      -u=<awsKeyId>
Create/Delete DynamoDB schemas
  -A, --alter         Alter tables : it will add new columns and create/delete
                        secondary index for existing tables. It compares the
                        provided table schema to the existing schema to decide
                        which columns need to be added and which indexes need
                        to be created or deleted
  -D, --delete-all           Delete tables
      --endpoint-override=<endpointOverride>
                            Endpoint with which the DynamoDB SDK should
                              communicate
  -f, --schema-file=<schemaFile>
                            Path to the schema json file
      --no-backup            Disable continuous backup for DynamoDB
      --no-scaling           Disable auto-scaling for DynamoDB
  -p, --password=<awsSecKey> AWS access secret key
  -r, --ru=<ru>              Base resource unit
      --region=<awsRegion>   AWS region
      --repair-all           Repair tables : it repairs the table metadata of
                              existing tables
  -u, --user=<awsKeyId>      AWS access key ID

JDBC databases

Usage: java -jar scalardb-schema-loader-<VERSION>.jar --jdbc [-D]
      -f=<schemaFile> -j=<url> -p=<password> -u=<user>
Create/Delete JDBC schemas
  -A, --alter         Alter tables : it will add new columns and create/delete
                        secondary index for existing tables. It compares the
                        provided table schema to the existing schema to decide
                        which columns need to be added and which indexes need
                        to be created or deleted
  -D, --delete-all       Delete tables
  -f, --schema-file=<schemaFile>
                        Path to the schema json file
  -j, --jdbc-url=<url>   JDBC URL
  -p, --password=<password>
                        JDBC password
      --repair-all       Repair tables : it repairs the table metadata of
                          existing tables
  -u, --user=<user>      JDBC user

Create namespaces and tables

To create namespaces and tables by using a properties file, run the following command, replacing the contents in the angle brackets as described:

$ java -jar scalardb-schema-loader-<VERSION>.jar --config <PATH_TO_SCALARDB_PROPERTIES_FILE> -f <PATH_TO_SCHEMA_FILE> [--coordinator]

If --coordinator is specified, a Coordinator table will be created.

注記

The following database-specific CLI arguments have been deprecated. Please use the CLI arguments for configuring the properties file instead.

Cassandra

$ java -jar scalardb-schema-loader-<VERSION>.jar --cassandra -h <CASSANDRA_IP> [-P <CASSANDRA_PORT>] [-u <CASSANDRA_USER>] [-p <CASSANDRA_PASSWORD>] -f <PATH_TO_SCHEMA_FILE> [-n <NETWORK_STRATEGY>] [-R <REPLICATION_FACTOR>]

• If -P <CASSANDRA_PORT> is not supplied, it defaults to 9042.
• If -u <CASSANDRA_USER> is not supplied, it defaults to cassandra.
• If -p <CASSANDRA_PASSWORD> is not supplied, it defaults to cassandra.
• <NETWORK_STRATEGY> should be SimpleStrategy or NetworkTopologyStrategy.

Cosmos DB for NoSQL

$ java -jar scalardb-schema-loader-<VERSION>.jar --cosmos -h <COSMOS_DB_FOR_NOSQL_ACCOUNT_URI> -p <COSMOS_DB_FOR_NOSQL_KEY> -f <PATH_TO_SCHEMA_FILE> [-r BASE_RESOURCE_UNIT]

• <COSMOS_DB_FOR_NOSQL_KEY> you can use a primary key or a secondary key.
• -r BASE_RESOURCE_UNIT is an option. You can specify the RU of each database. The maximum RU in tables in the database will be set. If you don't specify RU of tables, the database RU will be set with this option. By default, it's 400.

DynamoDB

$ java -jar scalardb-schema-loader-<VERSION>.jar --dynamo -u <AWS_ACCESS_KEY_ID> -p <AWS_ACCESS_SECRET_KEY> --region <REGION> -f <PATH_TO_SCHEMA_FILE> [-r BASE_RESOURCE_UNIT]

• <REGION> should be a string to specify an AWS region like ap-northeast-1.
• -r option is almost the same as Cosmos DB for NoSQL option. However, the unit means DynamoDB capacity unit. The read and write capacity units are set the same value.

JDBC databases

$ java -jar scalardb-schema-loader-<VERSION>.jar --jdbc -j <JDBC_URL> -u <USER> -p <PASSWORD> -f <PATH_TO_SCHEMA_FILE>

Alter tables

You can use a command to add new columns to and create or delete a secondary index for existing tables. This command compares the provided table schema to the existing schema to decide which columns need to be added and which indexes need to be created or deleted.

To add new columns to and create or delete a secondary index for existing tables, run the following command, replacing the contents in the angle brackets as described:

$ java -jar scalardb-schema-loader-<VERSION>.jar --config <PATH_TO_SCALARDB_PROPERTIES_FILE> -f <PATH_TO_SCHEMA_FILE> --alter

注記

The following database-specific CLI arguments have been deprecated. Please use the CLI arguments for configuring the properties file instead.

Cassandra

$ java -jar scalardb-schema-loader-<VERSION>.jar --cassandra -h <CASSANDRA_IP> [-P <CASSANDRA_PORT>] [-u <CASSANDRA_USER>] [-p <CASSANDRA_PASSWORD>] -f <PATH_TO_SCHEMA_FILE> --alter

Cosmos DB for NoSQL

$ java -jar scalardb-schema-loader-<VERSION>.jar --cosmos -h <COSMOS_DB_FOR_NOSQL_ACCOUNT_URI> -p <COSMOS_DB_FOR_NOSQL_KEY> -f <PATH_TO_SCHEMA_FILE> --alter

DynamoDB

$ java -jar scalardb-schema-loader-<VERSION>.jar --dynamo -u <AWS_ACCESS_KEY_ID> -p <AWS_ACCESS_SECRET_KEY> --region <REGION> -f <PATH_TO_SCHEMA_FILE> --alter

JDBC databases

$ java -jar scalardb-schema-loader-<VERSION>.jar --jdbc -j <JDBC_URL> -u <USER> -p <PASSWORD> -f <PATH_TO_SCHEMA_FILE> --alter

Delete tables

You can delete tables by using the properties file. To delete tables, run the following command, replacing the contents in the angle brackets as described:

$ java -jar scalardb-schema-loader-<VERSION>.jar --config <PATH_TO_SCALARDB_PROPERTIES_FILE> -f <PATH_TO_SCHEMA_FILE> [--coordinator] -D 

If --coordinator is specified, the Coordinator table will be deleted as well.

注記

The following database-specific CLI arguments have been deprecated. Please use the CLI arguments for configuring the properties file instead.

Cassandra

$ java -jar scalardb-schema-loader-<VERSION>.jar --cassandra -h <CASSANDRA_IP> [-P <CASSANDRA_PORT>] [-u <CASSANDRA_USER>] [-p <CASSANDRA_PASSWORD>] -f <PATH_TO_SCHEMA_FILE> -D

Cosmos DB for NoSQL

$ java -jar scalardb-schema-loader-<VERSION>.jar --cosmos -h <COSMOS_DB_FOR_NOSQL_ACCOUNT_URI> -p <COSMOS_DB_FOR_NOSQL_KEY> -f <PATH_TO_SCHEMA_FILE> -D

DynamoDB

$ java -jar scalardb-schema-loader-<VERSION>.jar --dynamo -u <AWS_ACCESS_KEY_ID> -p <AWS_ACCESS_SECRET_KEY> --region <REGION> -f <PATH_TO_SCHEMA_FILE> -D

JDBC databases

$ java -jar scalardb-schema-loader-<VERSION>.jar --jdbc -j <JDBC_URL> -u <USER> -p <PASSWORD> -f <PATH_TO_SCHEMA_FILE> -D

Repair tables

You can repair the table metadata of existing tables by using the properties file. To repair table metadata of existing tables, run the following command, replacing the contents in the angle brackets as described:

$ java -jar scalardb-schema-loader-<VERSION>.jar --config <PATH_TO_SCALARDB_PROPERTIES_FILE> -f <PATH_TO_SCHEMA_FILE> [--coordinator] --repair-all 

If --coordinator is specified, the Coordinator table will be repaired as well. In addition, if you're using Cosmos DB for NoSQL, running this command will also repair stored procedures attached to each table.

注記

The following database-specific CLI arguments have been deprecated. Please use the CLI arguments for configuring the properties file instead.

Cassandra

$ java -jar scalardb-schema-loader-<VERSION>.jar --cassandra -h <CASSANDRA_IP> [-P <CASSANDRA_PORT>] [-u <CASSANDRA_USER>] [-p <CASSANDRA_PASSWORD>] -f <PATH_TO_SCHEMA_FILE> --repair-all

Cosmos DB for NoSQL

$ java -jar scalardb-schema-loader-<VERSION>.jar --cosmos -h <COSMOS_DB_FOR_NOSQL_ACCOUNT_URI> -p <COSMOS_DB_FOR_NOSQL_KEY> -f <PATH_TO_SCHEMA_FILE> --repair-all

DynamoDB

$ java -jar scalardb-schema-loader-<VERSION>.jar --dynamo -u <AWS_ACCESS_KEY_ID> -p <AWS_ACCESS_SECRET_KEY> --region <REGION> [--no-backup] -f <PATH_TO_SCHEMA_FILE> --repair-all

JDBC databases

$ java -jar scalardb-schema-loader-<VERSION>.jar --jdbc -j <JDBC_URL> -u <USER> -p <PASSWORD> -f <PATH_TO_SCHEMA_FILE> --repair-all

Sample schema file

The following is a sample schema. For a sample schema file, see schema_sample.json.

{
  "sample_db.sample_table": {
    "transaction": false,
    "partition-key": [
      "c1"
    ],
    "clustering-key": [
      "c4 ASC",
      "c6 DESC"
    ],
    "columns": {
      "c1": "INT",
      "c2": "TEXT",
      "c3": "BLOB",
      "c4": "INT",
      "c5": "BOOLEAN",
      "c6": "INT"
    },
    "secondary-index": [
      "c2",
      "c4"
    ]
  },

  "sample_db.sample_table1": {
    "transaction": true,
    "partition-key": [
      "c1"
    ],
    "clustering-key": [
      "c4"
    ],
    "columns": {
      "c1": "INT",
      "c2": "TEXT",
      "c3": "INT",
      "c4": "INT",
      "c5": "BOOLEAN"
    }
  },

  "sample_db.sample_table2": {
    "transaction": false,
    "partition-key": [
      "c1"
    ],
    "clustering-key": [
      "c4",
      "c3"
    ],
    "columns": {
      "c1": "INT",
      "c2": "TEXT",
      "c3": "INT",
      "c4": "INT",
      "c5": "BOOLEAN"
    }
  }
}

The schema has table definitions that include columns, partition-key, clustering-key, secondary-index, and transaction fields.

• The columns field defines columns of the table and their data types.
• The partition-key field defines which columns the partition key is composed of.
• The clustering-key field defines which columns the clustering key is composed of.
• The secondary-index field defines which columns are indexed.
• The transaction field indicates whether the table is for transactions or not.
  • If you set the transaction field to true or don't specify the transaction field, this tool creates a table with transaction metadata if needed.
  • If you set the transaction field to false, this tool creates a table without any transaction metadata (that is, for a table with Storage API).

You can also specify database or storage-specific options in the table definition as follows:

{
  "sample_db.sample_table3": {
    "partition-key": [
      "c1"
    ],
    "columns": {
      "c1": "INT",
      "c2": "TEXT",
      "c3": "BLOB"
    },
    "compaction-strategy": "LCS",
    "ru": 5000
  }
}

The database or storage-specific options you can specify are as follows:

Cassandra

The compaction-strategy option is the compaction strategy used. This option should be STCS (SizeTieredCompaction), LCS (LeveledCompactionStrategy), or TWCS (TimeWindowCompactionStrategy).

Cosmos DB for NoSQL

The ru option stands for Request Units. For details, see RUs.

DynamoDB

The ru option stands for Request Units. For details, see RUs.

JDBC databases

No options are available for JDBC databases.

Scale for performance when using Cosmos DB for NoSQL or DynamoDB

When using Cosmos DB for NoSQL or DynamoDB, you can scale by using Request Units (RUs) or auto-scaling.

RUs

You can scale the throughput of Cosmos DB for NoSQL and DynamoDB by specifying the --ru option. When specifying this option, scaling applies to all tables or the ru parameter for each table.

If the --ru option is not set, the default values will be 400 for Cosmos DB for NoSQL and 10 for DynamoDB.

注記

• Schema Loader abstracts Request Units for Cosmos DB for NoSQL and Capacity Units for DynamoDB with RU. Therefore, be sure to set an appropriate value depending on the database implementation.
• Be aware that Schema Loader sets the same value to both read capacity unit and write capacity unit for DynamoDB.

Auto-scaling

By default, Schema Loader enables auto-scaling of RUs for all tables: RUs scale between 10 percent and 100 percent of a specified RU depending on the workload. For example, if you specify -r 10000, the RUs of each table auto-scales between 1000 and 10000.

注記

Auto-scaling for Cosmos DB for NoSQL is enabled only when this option is set to 4000 or more.

Data-type mapping between ScalarDB and other databases

The following table shows the supported data types in ScalarDB and their mapping to the data types of other databases.

ScalarDB	Cassandra	Cosmos DB for NoSQL	DynamoDB	MySQL	PostgreSQL	Oracle	SQL Server
BOOLEAN	boolean	boolean (JSON)	BOOL	boolean	boolean	number(1)	bit
INT	int	number (JSON)	N	int	int	int	int
BIGINT	bigint	number (JSON)	N	bigint	bigint	number(19)	bigint
FLOAT	float	number (JSON)	N	double	float	binary_float	float(24)
DOUBLE	double	number (JSON)	N	double	double precision	binary_double	float
TEXT	text	string (JSON)	S	longtext	text	varchar2(4000)	varchar(8000)
BLOB	blob	string (JSON)	B	longblob	bytea	RAW(2000)	varbinary(8000)

However, the following data types in JDBC databases are converted differently when they are used as a primary key or a secondary index key. This is due to the limitations of RDB data types.

ScalarDB	MySQL	PostgreSQL	Oracle
TEXT	VARCHAR(64)	VARCHAR(10485760)	VARCHAR2(64)
BLOB	VARBINARY(64)		RAW(64)

The value range of BIGINT in ScalarDB is from -2^53 to 2^53, regardless of the underlying database.

If this data-type mapping doesn't match your application, please alter the tables to change the data types after creating them by using this tool.

Internal metadata for Consensus Commit

The Consensus Commit transaction manager manages metadata (for example, transaction ID, record version, and transaction status) stored along with the actual records to handle transactions properly.

Thus, along with any columns that the application requires, additional columns for the metadata need to be defined in the schema. Additionally, this tool creates a table with the metadata if you use the Consensus Commit transaction manager.

Use Schema Loader in your application

You can check the version of Schema Loader from the Maven Central Repository. For example in Gradle, you can add the following dependency to your build.gradle file, replacing <VERSION> with the version of Schema Loader that you want to use:

dependencies {
    implementation 'com.scalar-labs:scalardb-schema-loader:<VERSION>'
}

Create, alter, repair, or delete tables

You can create, alter, delete, or repair tables that are defined in the schema by using Schema Loader. To do this, you can pass a ScalarDB properties file, schema, and additional options, if needed, as shown below:

public class SchemaLoaderSample {
  public static int main(String... args) throws SchemaLoaderException {
    Path configFilePath = Paths.get("database.properties");
    // "sample_schema.json" and "altered_sample_schema.json" can be found in the "/sample" directory.
    Path schemaFilePath = Paths.get("sample_schema.json");
    Path alteredSchemaFilePath = Paths.get("altered_sample_schema.json");
    boolean createCoordinatorTables = true; // whether to create the Coordinator table or not
    boolean deleteCoordinatorTables = true; // whether to delete the Coordinator table or not
    boolean repairCoordinatorTables = true; // whether to repair the Coordinator table or not

    Map<String, String> tableCreationOptions = new HashMap<>();

    tableCreationOptions.put(
        CassandraAdmin.REPLICATION_STRATEGY, ReplicationStrategy.SIMPLE_STRATEGY.toString());
    tableCreationOptions.put(CassandraAdmin.COMPACTION_STRATEGY, CompactionStrategy.LCS.toString());
    tableCreationOptions.put(CassandraAdmin.REPLICATION_FACTOR, "1");

    tableCreationOptions.put(DynamoAdmin.REQUEST_UNIT, "1");
    tableCreationOptions.put(DynamoAdmin.NO_SCALING, "true");
    tableCreationOptions.put(DynamoAdmin.NO_BACKUP, "true");

    Map<String, String> indexCreationOptions = new HashMap<>();
    indexCreationOptions.put(DynamoAdmin.NO_SCALING, "true");

    Map<String, String> tableReparationOptions = new HashMap<>();
    indexCreationOptions.put(DynamoAdmin.NO_BACKUP, "true");

    // Create tables.
    SchemaLoader.load(configFilePath, schemaFilePath, tableCreationOptions, createCoordinatorTables);

    // Alter tables.
    SchemaLoader.alterTables(configFilePath, alteredSchemaFilePath, indexCreationOptions);

    // Repair tables.
    SchemaLoader.repairTables(configFilePath, schemaFilePath, tableReparationOptions, repairCoordinatorTables);

    // Delete tables.
    SchemaLoader.unload(configFilePath, schemaFilePath, deleteCoordinatorTables);

    return 0;
  }
}

You can also create, delete, or repair a schema by passing a serialized-schema JSON string (the raw text of a schema file) as shown below:

// Create tables.
SchemaLoader.load(configFilePath, serializedSchemaJson, tableCreationOptions, createCoordinatorTables);

// Alter tables.
SchemaLoader.alterTables(configFilePath, serializedAlteredSchemaFilePath, indexCreationOptions);

// Repair tables.
SchemaLoader.repairTables(configFilePath, serializedSchemaJson, tableReparationOptions, repairCoordinatorTables);

// Delete tables.
SchemaLoader.unload(configFilePath, serializedSchemaJson, deleteCoordinatorTables);

When configuring ScalarDB, you can use a Properties object as well, as shown below:

// Create tables.
SchemaLoader.load(properties, serializedSchemaJson, tableCreationOptions, createCoordinatorTables);

// Alter tables.
SchemaLoader.alterTables(properties, serializedAlteredSchemaFilePath, indexCreationOptions);

// Repair tables.
SchemaLoader.repairTables(properties, serializedSchemaJson, tableReparationOptions, repairCoordinatorTables);

// Delete tables.
SchemaLoader.unload(properties, serializedSchemaJson, deleteCoordinatorTables);