摘要:
A clock determination method executed by a first one of apparatuses included in a system includes receiving a list including first definite clock values of respective apparatuses, the list being circulated among the apparatuses; determining the first clock value of the first apparatus at a point in time based on a smallest of logical clock values regarding corresponding commands on which processing is not completed, the commands being included in commands received by the first apparatus and the logical clock values being obtained at a time of receiving the corresponding commands and being stored, and updating the first clock value, the updated first clock value being included in the list, by using the determined first clock value; specifying, as a second clock value for the system, a smallest of the first clock values included in the updated list; and transmitting the updated list to a second one of the apparatuses.
摘要:
A clock determination method executed by a first one of apparatuses included in a system includes receiving a list including first definite clock values of respective apparatuses, the list being circulated among the apparatuses; determining the first clock value of the first apparatus at a point in time based on a smallest of logical clock values regarding corresponding commands on which processing is not completed, the commands being included in commands received by the first apparatus and the logical clock values being obtained at a time of receiving the corresponding commands and being stored, and updating the first clock value, the updated first clock value being included in the list, by using the determined first clock value; specifying, as a second clock value for the system, a smallest of the first clock values included in the updated list; and transmitting the updated list to a second one of the apparatuses.
摘要:
A disclosed information processing system includes a receiving node and a storing node, the receiving node includes an order information adding unit that adds first order information to operation instructions included in an operation instruction sequence, the first order information indicating an order among the operation instruction sequences and an operation instruction transmission unit that transmits the one or more operation instructions to the storing node, the storing node includes an operation instruction execution unit that executes the operation instructions. Further, upon a receipt of a second operation instruction having the first order information indicating that the second operation instruction is earlier than the one or more first operation instructions, which was already executed, in the first order relationship, the storing node re-executes the first operation instruction after the second operation instruction is executed.
摘要:
A first node apparatus included in a distributed data store acquires first operation information and a first timestamp corresponding to target data. The first operation information specifies a first operation to be executed on the target data. The first timestamp indicates a first receipt time of the first operation information. The first node apparatus determines whether the first receipt time is earlier than some of second receipt times on the basis of second timestamps and the acquired first timestamp. The second timestamp indicates the second receipt time of second operation information. The second operation information specifies a second operation executed on the target data. The first node apparatus re-executes the second operations together with the first operation on the target data in the order of the receipt time when it is determined that the first receipt time is earlier than some of the second receipt times.
摘要:
Each of plurality of nodes connected to each other via a network includes a local instance processor and a user application processor. The local instance processor executes a data sharing method for accessing shared data. The data sharing method includes: storing a value of first shared data with a function identifier of an update function upon receiving a registration request, wherein the update function is commutative and idempotent; updating the stored value of the first shared data to a first update value in accordance with an execution result of the update function upon receiving an update request; returning a completion message upon updating the stored value of the first shared data stored in the first node; and transmitting a first reflection request to a second node upon updating the stored value of the first shared data stored in the first node.
摘要:
A non-aqueous electrolyte battery comprising: a battery case containing aluminum; a positive electrode terminal attached to the battery case; and a negative electrode terminal attached to the battery case and insulated from the battery case, wherein the positive electrode terminal and the battery case are connected through a resistor having resistance of 1 Ω to 1 MΩ. Otherwise, A non-aqueous electrolyte battery comprising: a battery case containing iron; a negative electrode terminal attached to the battery case; and a positive electrode terminal attached to the battery case and insulated from the battery case, wherein the negative electrode terminal and the battery case are connected through a resistor having resistance of 1 Ω to 1 MΩ.
摘要:
The communication I/F unit according to the present invention includes a chain executing unit that executes all the chain SWRs. The SWR-chain storage unit stores therein a chain of SWRs. The chain executing unit sequentially reads the SWRs and executes the corresponding operations of an atomic operation so that the corresponding packets are sent outside.
摘要:
A communication method in an information processing system including a group of first information processing apparatuses that transmit data and a group of second information processing apparatuses that receive the data is disclosed. The communication method includes storing data subject to being transmitted to one of the second information processing apparatuses in a data storage by associating the data with identifier information of the second information processing apparatus, and performing transmission processing to transmit the stored data to the second information processing apparatus in response to reception of a first token generated by the second information processing apparatus serving as a generating source of the first token, the first tokens indicating a transmission right to transmit the data to the second information processing apparatus and being transferred between the group of the first information processing apparatuses and between the group of the second information processing apparatuses.
摘要:
A relay apparatus includes: a tag information acquisition section that acquires tag information attached to the network-connected device; a management section that manages the tag information read out by the tag information acquisition section and an IP address assigned by the management apparatus, and an identification information assigned to the relay apparatus itself in association with one another; and a processing section that receives information that the management apparatus has transmitted with the tag information or IP address as a transmission destination and receives information transmitted from the network-connected device for execution of predetermined processing.
摘要:
A first storing unit stores therein a chain indivisibility instruction. A detecting unit detects a change of first data that is distributed in a node computer. A first designating unit designates, when the detecting unit detects the change in the first data, an indivisibility instruction corresponding to the first data from which the change is detected, by referring to the first storing unit. A first executing unit executes the indivisibility instruction designated by the first designating unit.