Package io.debezium.connector.mysql

Class MySqlConnectorConfig

java.lang.Object

io.debezium.config.CommonConnectorConfig

io.debezium.relational.RelationalDatabaseConnectorConfig

io.debezium.relational.HistorizedRelationalDatabaseConnectorConfig

io.debezium.connector.mysql.MySqlConnectorConfig

public class MySqlConnectorConfig
extends HistorizedRelationalDatabaseConnectorConfig

The configuration properties.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	MySqlConnectorConfig.BigIntUnsignedHandlingMode	The set of predefined BigIntUnsignedHandlingMode options or aliases.
static enum	MySqlConnectorConfig.SecureConnectionMode	The set of predefined SecureConnectionMode options or aliases.
static enum	MySqlConnectorConfig.SnapshotLockingMode	The set of predefined Snapshot Locking Mode options.
static enum	MySqlConnectorConfig.SnapshotMode	The set of predefined SnapshotMode options or aliases.
static enum	MySqlConnectorConfig.SnapshotNewTables

Nested classes/interfaces inherited from class io.debezium.relational.RelationalDatabaseConnectorConfig

RelationalDatabaseConnectorConfig.DecimalHandlingMode, RelationalDatabaseConnectorConfig.SnapshotTablesRowCountOrder

Nested classes/interfaces inherited from class io.debezium.config.CommonConnectorConfig

CommonConnectorConfig.BinaryHandlingMode, CommonConnectorConfig.EventProcessingFailureHandlingMode, CommonConnectorConfig.FieldNameAdjustmentMode, CommonConnectorConfig.SchemaNameAdjustmentMode, CommonConnectorConfig.Version

Field Summary

Fields

Modifier and Type	Field	Description
static Field.Set	ALL_FIELDS	The set of Fields defined as part of this configuration.
static final Field	BIGINT_UNSIGNED_HANDLING_MODE
static final Field	BUFFER_SIZE_FOR_BINLOG_READER
protected static final Set<String>	BUILT_IN_DB_NAMES
private final Configuration	config
private static final ConfigDefinition	CONFIG_DEFINITION
static final Field	CONNECTION_TIMEOUT_MS
private final Duration	connectionTimeout
private static final int	DEFAULT_BINLOG_BUFFER_SIZE	Default size of the binlog buffer used for examining transactions and deciding whether to propagate them or not.
protected static final int	DEFAULT_PORT
protected static final int	DEFAULT_SNAPSHOT_FETCH_SIZE	Minimum value used for fetch size hint.
static final Field	ENABLE_TIME_ADJUSTER
static final Field	EVENT_DESERIALIZATION_FAILURE_HANDLING_MODE
protected static Field.Set	EXPOSED_FIELDS
static final Field	GTID_SOURCE_EXCLUDES	A comma-separated list of regular expressions that match source UUIDs in the GTID set used to find the binlog position in the MySQL server.
static final Field	GTID_SOURCE_FILTER_DML_EVENTS	If set to true, we will only produce DML events into Kafka for transactions that were written on MySQL servers with UUIDs matching the filters defined by the GTID_SOURCE_INCLUDES or GTID_SOURCE_EXCLUDES configuration options, if they are specified.
static final Field	GTID_SOURCE_INCLUDES	A comma-separated list of regular expressions that match source UUIDs in the GTID set used to find the binlog position in the MySQL server.
private final Predicate<String>	gtidSourceFilter
static final Field	INCLUDE_SQL_QUERY
static final Field	INCONSISTENT_SCHEMA_HANDLING_MODE
private final CommonConnectorConfig.EventProcessingFailureHandlingMode	inconsistentSchemaFailureHandlingMode
static final Field	JDBC_DRIVER
static final Field	JDBC_PROTOCOL
static final Field	KEEP_ALIVE
static final Field	KEEP_ALIVE_INTERVAL_MS
private static final org.slf4j.Logger	LOGGER
static final Field	ON_CONNECT_STATEMENTS
static final Field	PORT
static final Field	READ_ONLY_CONNECTION
private final boolean	readOnlyConnection
static final Field	ROW_COUNT_FOR_STREAMING_RESULT_SETS
static final Field	SERVER_ID
static final Field	SERVER_ID_OFFSET
static final Field	SNAPSHOT_LOCKING_MODE
static final Field	SNAPSHOT_MODE
static final Field	SNAPSHOT_NEW_TABLES
private final MySqlConnectorConfig.SnapshotLockingMode	snapshotLockingMode
private final MySqlConnectorConfig.SnapshotMode	snapshotMode
private final MySqlConnectorConfig.SnapshotNewTables	snapshotNewTables
static final Field	SOURCE_INFO_STRUCT_MAKER
static final Field	SSL_KEYSTORE
static final Field	SSL_KEYSTORE_PASSWORD
static final Field	SSL_MODE
static final Field	SSL_TRUSTSTORE
static final Field	SSL_TRUSTSTORE_PASSWORD
static final Field	STORE_ONLY_CAPTURED_DATABASES_DDL
static final Field	TABLES_IGNORE_BUILTIN
private final TemporalPrecisionMode	temporalPrecisionMode
(package private) static final String	TEST_DISABLE_GLOBAL_LOCKING	It is not possible to test disabled global locking locally as regular MySQL build always provides global locking.
static final Field	TIME_PRECISION_MODE
static final Field	TOPIC_NAMING_STRATEGY

Fields inherited from class io.debezium.relational.HistorizedRelationalDatabaseConnectorConfig

SCHEMA_HISTORY, SKIP_UNPARSEABLE_DDL_STATEMENTS, skipUnparseableDDL, STORE_ONLY_CAPTURED_TABLES_DDL, storeOnlyCapturedDatabasesDdl, storeOnlyCapturedTablesDdl

Fields inherited from class io.debezium.relational.RelationalDatabaseConnectorConfig

COLUMN_EXCLUDE_LIST, COLUMN_INCLUDE_LIST, COLUMN_INCLUDE_LIST_ALREADY_SPECIFIED_ERROR_MSG, DATABASE_EXCLUDE_LIST, DATABASE_EXCLUDE_LIST_NAME, DATABASE_INCLUDE_LIST, DATABASE_INCLUDE_LIST_ALREADY_SPECIFIED_ERROR_MSG, DATABASE_INCLUDE_LIST_NAME, DATABASE_NAME, DECIMAL_HANDLING_MODE, DEFAULT_SNAPSHOT_LOCK_TIMEOUT_MILLIS, DEFAULT_UNAVAILABLE_VALUE_PLACEHOLDER, HOSTNAME, HOSTNAME_PATTERN, INCLUDE_SCHEMA_CHANGES, INCLUDE_SCHEMA_COMMENTS, MASK_COLUMN, MASK_COLUMN_WITH_HASH, MSG_KEY_COLUMNS, PASSWORD, PROPAGATE_COLUMN_SOURCE_TYPE, PROPAGATE_DATATYPE_SOURCE_TYPE, SCHEMA_EXCLUDE_LIST, SCHEMA_EXCLUDE_LIST_NAME, SCHEMA_INCLUDE_LIST, SCHEMA_INCLUDE_LIST_ALREADY_SPECIFIED_ERROR_MSG, SCHEMA_INCLUDE_LIST_NAME, SNAPSHOT_FULL_COLUMN_SCAN_FORCE, SNAPSHOT_LOCK_TIMEOUT_MS, SNAPSHOT_SELECT_STATEMENT_OVERRIDES_BY_TABLE, SNAPSHOT_TABLES_ORDER_BY_ROW_COUNT, TABLE_EXCLUDE_LIST, TABLE_EXCLUDE_LIST_NAME, TABLE_IGNORE_BUILTIN, TABLE_INCLUDE_LIST, TABLE_INCLUDE_LIST_ALREADY_SPECIFIED_ERROR_MSG, TABLE_INCLUDE_LIST_NAME, TRUNCATE_COLUMN, UNAVAILABLE_VALUE_PLACEHOLDER, USER

Fields inherited from class io.debezium.config.CommonConnectorConfig

BINARY_HANDLING_MODE, CUSTOM_CONVERTERS, CUSTOM_METRIC_TAGS, CUSTOM_RETRIABLE_EXCEPTION, DATABASE_CONFIG_PREFIX, DEFAULT_MAX_BATCH_SIZE, DEFAULT_MAX_QUEUE_SIZE, DEFAULT_MAX_QUEUE_SIZE_IN_BYTES, DEFAULT_MAX_RETRIES, DEFAULT_POLL_INTERVAL_MILLIS, DEFAULT_QUERY_FETCH_SIZE, DEFAULT_RETRIABLE_RESTART_WAIT, DRIVER_CONFIG_PREFIX, ERRORS_MAX_RETRIES, EVENT_PROCESSING_FAILURE_HANDLING_MODE, FIELD_NAME_ADJUSTMENT_MODE, INCREMENTAL_SNAPSHOT_ALLOW_SCHEMA_CHANGES, INCREMENTAL_SNAPSHOT_CHUNK_SIZE, logicalName, MAX_BATCH_SIZE, MAX_QUEUE_SIZE, MAX_QUEUE_SIZE_IN_BYTES, MAX_RETRIES_ON_ERROR, MULTI_PARTITION_MODE, NOTIFICATION_CONFIGURATION_FIELD_PREFIX_STRING, NOTIFICATION_ENABLED_CHANNELS, POLL_INTERVAL_MS, PROVIDE_TRANSACTION_METADATA, QUERY_FETCH_SIZE, RETRIABLE_RESTART_WAIT, SCHEMA_NAME_ADJUSTMENT_MODE, SIGNAL_DATA_COLLECTION, SIGNAL_ENABLED_CHANNELS, SIGNAL_POLL_INTERVAL_MS, SKIP_MESSAGES_WITHOUT_CHANGE, SKIPPED_OPERATIONS, SNAPSHOT_DELAY_MS, SNAPSHOT_FETCH_SIZE, SNAPSHOT_MAX_THREADS, SNAPSHOT_MODE_TABLES, TASK_ID, TOMBSTONES_ON_DELETE, TOPIC_NAME_PATTERN, TOPIC_PREFIX

Constructor Summary

Constructors

Constructor	Description
MySqlConnectorConfig(Configuration config)

Method Summary

Modifier and Type	Method	Description
int	bufferSizeForStreamingChangeEventSource()
protected static org.apache.kafka.common.config.ConfigDef	configDef()
Duration	getConnectionTimeout()
String	getConnectorName()
String	getContextName()
protected HistoryRecordComparator	getHistoryRecordComparator()
MySqlConnectorConfig.SnapshotLockingMode	getSnapshotLockingMode()
MySqlConnectorConfig.SnapshotMode	getSnapshotMode()
MySqlConnectorConfig.SnapshotNewTables	getSnapshotNewTables()
protected SourceInfoStructMaker<? extends AbstractSourceInfo>	getSourceInfoStructMaker(CommonConnectorConfig.Version version)
TemporalPrecisionMode	getTemporalPrecisionMode()
Predicate<String>	gtidSourceFilter()	Get the predicate function that will return true if a GTID source is to be included, or false if a GTID source is to be excluded.
String	hostname()
boolean	includeSchemaChangeRecords()
boolean	includeSqlQuery()
CommonConnectorConfig.EventProcessingFailureHandlingMode	inconsistentSchemaFailureHandlingMode()
static boolean	isBuiltInDatabase(String databaseName)
static boolean	isNotBuiltInTable(TableId id)
boolean	isReadOnlyConnection()
String	password()
int	port()
long	rowCountForLargeTable()
long	serverId()
MySqlConnectorConfig.SecureConnectionMode	sslMode()
boolean	sslModeEnabled()
boolean	supportsOperationFiltering()
protected boolean	supportsSchemaChangesDuringIncrementalSnapshot()
boolean	useCursorFetch()
(package private) boolean	useGlobalLock()	Intended for testing only
String	username()
private static int	validateEventDeserializationFailureHandlingModeNotSet(Configuration config, Field field, Field.ValidationOutput problems)
private static int	validateGtidSetExcludes(Configuration config, Field field, Field.ValidationOutput problems)
private static int	validateSnapshotLockingMode(Configuration config, Field field, Field.ValidationOutput problems)	Validate the new snapshot.locking.mode configuration, which replaces snapshot.minimal.locking.
private static int	validateTimePrecisionMode(Configuration config, Field field, Field.ValidationOutput problems)	Validate the time.precision.mode configuration.

Methods inherited from class io.debezium.relational.HistorizedRelationalDatabaseConnectorConfig

ddlFilter, getSchemaHistory, multiPartitionMode, skipUnparseableDdlStatements, storeOnlyCapturedDatabases, storeOnlyCapturedTables, useCatalogBeforeSchema

Methods inherited from class io.debezium.relational.RelationalDatabaseConnectorConfig

createHeartbeat, getColumnFilter, getDecimalMode, getFieldNamer, getHeartbeatActionQuery, getJdbcConfig, getKeyMapper, getSnapshotSelectOverridesByTable, getTableFilters, getTableIdMapper, getUnavailableValuePlaceholder, isColumnsFiltered, isFullColumnScanRequired, isSchemaChangesHistoryEnabled, isSchemaCommentsHistoryEnabled, schemaExcludeList, schemaIncludeList, snapshotLockTimeout, snapshotOrderByRowCount, tableExcludeList, tableIncludeList

Methods inherited from class io.debezium.config.CommonConnectorConfig

binaryHandlingMode, createCustomMetricTags, customConverterRegistry, customRetriableException, fieldNameAdjuster, getConfig, getCustomMetricTags, getDataCollectionsToBeSnapshotted, getEnabledChannels, getEnabledNotificationChannels, getEventProcessingFailureHandlingMode, getHeartbeatInterval, getHeartbeatTopicsPrefix, getIncrementalSnapshotChunkSize, getLogicalName, getMaxBatchSize, getMaxQueueSize, getMaxQueueSizeInBytes, getMaxRetriesOnError, getNotificationTopic, getPollInterval, getQueryFetchSize, getRetriableRestartWait, getSignalingDataCollectionId, getSignalPollInterval, getSkippedOperations, getSnapshotDelay, getSnapshotFetchSize, getSnapshotMaxThreads, getSourceInfoStructMaker, getSourceInfoStructMaker, getTaskId, getTopicNamingStrategy, getTopicNamingStrategy, isEmitTombstoneOnDelete, isIncrementalSnapshotSchemaChangesEnabled, isSignalDataCollection, parseSignallingMessage, schemaNameAdjuster, shouldProvideTransactionMetadata, skipMessagesWithoutChange, validate, validateAndRecord, validateSkippedOperation, validateTopicName

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

LOGGER

private static final org.slf4j.Logger LOGGER

TEST_DISABLE_GLOBAL_LOCKING

static final String TEST_DISABLE_GLOBAL_LOCKING

It is not possible to test disabled global locking locally as regular MySQL build always provides global locking. So to bypass this limitation it is necessary to provide a backdoor to connector to disable it on its own.

See Also:

• Constant Field Values

DEFAULT_SNAPSHOT_FETCH_SIZE

protected static final int DEFAULT_SNAPSHOT_FETCH_SIZE

Minimum value used for fetch size hint. See DBZ-94 for details.

See Also:

• Constant Field Values

DEFAULT_PORT

protected static final int DEFAULT_PORT

See Also:

• Constant Field Values

DEFAULT_BINLOG_BUFFER_SIZE

private static final int DEFAULT_BINLOG_BUFFER_SIZE

Default size of the binlog buffer used for examining transactions and deciding whether to propagate them or not. A size of 0 disables the buffer, all events will be passed on directly as they are passed by the binlog client.

See Also:

• Constant Field Values

PORT

public static final Field PORT

ON_CONNECT_STATEMENTS

public static final Field ON_CONNECT_STATEMENTS

SERVER_ID

public static final Field SERVER_ID

SERVER_ID_OFFSET

public static final Field SERVER_ID_OFFSET

SSL_MODE

public static final Field SSL_MODE

SSL_KEYSTORE

public static final Field SSL_KEYSTORE

SSL_KEYSTORE_PASSWORD

public static final Field SSL_KEYSTORE_PASSWORD

SSL_TRUSTSTORE

public static final Field SSL_TRUSTSTORE

SSL_TRUSTSTORE_PASSWORD

public static final Field SSL_TRUSTSTORE_PASSWORD

TABLES_IGNORE_BUILTIN

public static final Field TABLES_IGNORE_BUILTIN

JDBC_DRIVER

public static final Field JDBC_DRIVER

JDBC_PROTOCOL

public static final Field JDBC_PROTOCOL

GTID_SOURCE_INCLUDES

public static final Field GTID_SOURCE_INCLUDES

A comma-separated list of regular expressions that match source UUIDs in the GTID set used to find the binlog position in the MySQL server. Only the GTID ranges that have sources matching one of these include patterns will be used. Must not be used with GTID_SOURCE_EXCLUDES.

GTID_SOURCE_EXCLUDES

public static final Field GTID_SOURCE_EXCLUDES

A comma-separated list of regular expressions that match source UUIDs in the GTID set used to find the binlog position in the MySQL server. Only the GTID ranges that have sources matching none of these exclude patterns will be used. Must not be used with GTID_SOURCE_INCLUDES.

GTID_SOURCE_FILTER_DML_EVENTS

public static final Field GTID_SOURCE_FILTER_DML_EVENTS

If set to true, we will only produce DML events into Kafka for transactions that were written on MySQL servers with UUIDs matching the filters defined by the GTID_SOURCE_INCLUDES or GTID_SOURCE_EXCLUDES configuration options, if they are specified. Defaults to true. When true, either GTID_SOURCE_INCLUDES or GTID_SOURCE_EXCLUDES must be set.

CONNECTION_TIMEOUT_MS

public static final Field CONNECTION_TIMEOUT_MS

KEEP_ALIVE

public static final Field KEEP_ALIVE

KEEP_ALIVE_INTERVAL_MS

public static final Field KEEP_ALIVE_INTERVAL_MS

ROW_COUNT_FOR_STREAMING_RESULT_SETS

public static final Field ROW_COUNT_FOR_STREAMING_RESULT_SETS

BUFFER_SIZE_FOR_BINLOG_READER

public static final Field BUFFER_SIZE_FOR_BINLOG_READER

TOPIC_NAMING_STRATEGY

public static final Field TOPIC_NAMING_STRATEGY

INCLUDE_SQL_QUERY

public static final Field INCLUDE_SQL_QUERY

SNAPSHOT_MODE

public static final Field SNAPSHOT_MODE

SNAPSHOT_LOCKING_MODE

public static final Field SNAPSHOT_LOCKING_MODE

SNAPSHOT_NEW_TABLES

public static final Field SNAPSHOT_NEW_TABLES

TIME_PRECISION_MODE

public static final Field TIME_PRECISION_MODE

BIGINT_UNSIGNED_HANDLING_MODE

public static final Field BIGINT_UNSIGNED_HANDLING_MODE

EVENT_DESERIALIZATION_FAILURE_HANDLING_MODE

public static final Field EVENT_DESERIALIZATION_FAILURE_HANDLING_MODE

INCONSISTENT_SCHEMA_HANDLING_MODE

public static final Field INCONSISTENT_SCHEMA_HANDLING_MODE

ENABLE_TIME_ADJUSTER

public static final Field ENABLE_TIME_ADJUSTER

READ_ONLY_CONNECTION

public static final Field READ_ONLY_CONNECTION

SOURCE_INFO_STRUCT_MAKER

public static final Field SOURCE_INFO_STRUCT_MAKER

STORE_ONLY_CAPTURED_DATABASES_DDL

public static final Field STORE_ONLY_CAPTURED_DATABASES_DDL

CONFIG_DEFINITION

private static final ConfigDefinition CONFIG_DEFINITION

ALL_FIELDS

public static Field.Set ALL_FIELDS

The set of Fields defined as part of this configuration.

EXPOSED_FIELDS

protected static Field.Set EXPOSED_FIELDS

BUILT_IN_DB_NAMES

protected static final Set<String> BUILT_IN_DB_NAMES

config

private final Configuration config

snapshotMode

private final MySqlConnectorConfig.SnapshotMode snapshotMode

snapshotLockingMode

private final MySqlConnectorConfig.SnapshotLockingMode snapshotLockingMode

snapshotNewTables

private final MySqlConnectorConfig.SnapshotNewTables snapshotNewTables

temporalPrecisionMode

private final TemporalPrecisionMode temporalPrecisionMode

connectionTimeout

private final Duration connectionTimeout

gtidSourceFilter

private final Predicate<String> gtidSourceFilter

inconsistentSchemaFailureHandlingMode

private final CommonConnectorConfig.EventProcessingFailureHandlingMode inconsistentSchemaFailureHandlingMode

readOnlyConnection

private final boolean readOnlyConnection

Constructor Details

MySqlConnectorConfig

public MySqlConnectorConfig(Configuration config)

Method Details

configDef

protected static org.apache.kafka.common.config.ConfigDef configDef()

supportsOperationFiltering

public boolean supportsOperationFiltering()

Overrides:

supportsOperationFiltering in class CommonConnectorConfig

supportsSchemaChangesDuringIncrementalSnapshot

protected boolean supportsSchemaChangesDuringIncrementalSnapshot()

Overrides:

supportsSchemaChangesDuringIncrementalSnapshot in class CommonConnectorConfig

useCursorFetch

public boolean useCursorFetch()

getSnapshotLockingMode

public MySqlConnectorConfig.SnapshotLockingMode getSnapshotLockingMode()

getSnapshotNewTables

public MySqlConnectorConfig.SnapshotNewTables getSnapshotNewTables()

validateEventDeserializationFailureHandlingModeNotSet

private static int validateEventDeserializationFailureHandlingModeNotSet(Configuration config,
 Field field,
 Field.ValidationOutput problems)

validateGtidSetExcludes

private static int validateGtidSetExcludes(Configuration config,
 Field field,
 Field.ValidationOutput problems)

validateSnapshotLockingMode

private static int validateSnapshotLockingMode(Configuration config,
 Field field,
 Field.ValidationOutput problems)

Validate the new snapshot.locking.mode configuration, which replaces snapshot.minimal.locking. If minimal.locking is explicitly defined and locking.mode is NOT explicitly defined: - coerce minimal.locking into the new snap.locking.mode property. If minimal.locking is NOT explicitly defined and locking.mode IS explicitly defined: - use new locking.mode property. If BOTH minimal.locking and locking.mode ARE defined: - Throw a validation error.

validateTimePrecisionMode

private static int validateTimePrecisionMode(Configuration config,
 Field field,
 Field.ValidationOutput problems)

Validate the time.precision.mode configuration. If adaptive is specified, this option has the potential to cause overflow which is why the option was deprecated and no longer supported for this connector.

getSourceInfoStructMaker

protected SourceInfoStructMaker<? extends AbstractSourceInfo> getSourceInfoStructMaker(CommonConnectorConfig.Version version)

Specified by:

getSourceInfoStructMaker in class CommonConnectorConfig

getContextName

public String getContextName()

Specified by:

getContextName in class CommonConnectorConfig

getConnectorName

public String getConnectorName()

Specified by:

getConnectorName in class CommonConnectorConfig

getTemporalPrecisionMode

public TemporalPrecisionMode getTemporalPrecisionMode()

Overrides:

getTemporalPrecisionMode in class RelationalDatabaseConnectorConfig

getSnapshotMode

public MySqlConnectorConfig.SnapshotMode getSnapshotMode()

getConnectionTimeout

public Duration getConnectionTimeout()

inconsistentSchemaFailureHandlingMode

public CommonConnectorConfig.EventProcessingFailureHandlingMode inconsistentSchemaFailureHandlingMode()

hostname

public String hostname()

port

public int port()

username

public String username()

password

public String password()

serverId

public long serverId()

sslMode

public MySqlConnectorConfig.SecureConnectionMode sslMode()

sslModeEnabled

public boolean sslModeEnabled()

bufferSizeForStreamingChangeEventSource

public int bufferSizeForStreamingChangeEventSource()

gtidSourceFilter

public Predicate<String> gtidSourceFilter()

Get the predicate function that will return true if a GTID source is to be included, or false if a GTID source is to be excluded.

Returns:

the GTID source predicate function; never null

includeSchemaChangeRecords

public boolean includeSchemaChangeRecords()

includeSqlQuery

public boolean includeSqlQuery()

rowCountForLargeTable

public long rowCountForLargeTable()

getHistoryRecordComparator

protected HistoryRecordComparator getHistoryRecordComparator()

Specified by:

getHistoryRecordComparator in class HistorizedRelationalDatabaseConnectorConfig

isBuiltInDatabase

public static boolean isBuiltInDatabase(String databaseName)

isNotBuiltInTable

public static boolean isNotBuiltInTable(TableId id)

isReadOnlyConnection

public boolean isReadOnlyConnection()

useGlobalLock

boolean useGlobalLock()

Intended for testing only