question: visible for testing only . concode_field_sep IMetaStoreClient metaStoreClient concode_elem_sep Set<Table> sources concode_elem_sep int lockRetries concode_elem_sep int retryWaitSeconds concode_elem_sep Collection<Table> sinks concode_elem_sep Timer heartbeat concode_elem_sep HiveConf hiveConf concode_elem_sep LockFailureListener listener concode_elem_sep LockFailureListener listener concode_elem_sep Set<Table> sinks concode_elem_sep Long transactionId concode_elem_sep int retryWaitSeconds concode_elem_sep Long lockId concode_elem_sep int lockRetries concode_elem_sep Logger LOG concode_elem_sep double HEARTBEAT_FACTOR concode_elem_sep int DEFAULT_HEARTBEAT_PERIOD concode_elem_sep HeartbeatFactory heartbeatFactory concode_elem_sep Collection<Table> tables concode_elem_sep String user concode_field_sep Options lockFailureListener concode_elem_sep Options lockRetries concode_elem_sep Options retryWaitSeconds concode_elem_sep Options addSourceTable concode_elem_sep Options configuration concode_elem_sep void checkNotNullOrEmpty concode_elem_sep void release concode_elem_sep String getUser concode_elem_sep void internalRelease concode_elem_sep Options addSinkTable concode_elem_sep void initiateHeartbeat concode_elem_sep void checkArgument concode_elem_sep LockRequest buildLockRequest concode_elem_sep void acquire concode_elem_sep void acquire concode_elem_sep Long getLockId concode_elem_sep void checkNotNull concode_elem_sep List<String> asStrings concode_elem_sep int getHeartbeatPeriod concode_elem_sep String toString concode_elem_sep String join concode_elem_sep Options user concode_elem_sep long internalAcquire concode_elem_sep void addTable
target: Long function ( ) { return transactionId ; }