Vmware, Inc.

Cheng Zhang

Srinivas Neginhal

Medhavi Dhawan

Maithem Munshed

Rajneesh Bajpai

Ragnar Edholm

Jiaqi Chen

Vjekoslav Brajkovic

Sandeep Madhav Uttamchandani

Zeeshan Altaf Lokhandwala

Ming Wen

David Tsai

Anny Martinez Manzanilla

Alexander Rogozinsky

Xiaoqin Ma

Dwarika Lal

Artem Korneev

Certain embodiments described herein are directed to methods and systems for adding one or more nodes to a first cluster including a first node in a computer system. A method performed by the first node comprises receiving a first request from a second node to join the first cluster. The method also comprises retrieving a first cluster configuration associated with the first cluster from a distributed database through a first database server (DBS) and creating a second cluster configuration using the first cluster configuration and information received from the second node as part of the request. The method further comprises populating a first one or more local trust stores of a first one or more processes executing on the first node with a second one or more security certificates of a second one or more processes executing on the second node. The method further comprises writing the second cluster configuration to the distributed database and returning the second cluster configuration to the second node.

Methods and systems for securely and efficiently clustering distributed processes using a consistent database

Some embodiments provide a method for a global manager that manages a logical network spanning multiple physical sites. The method receives a set of data describing a modification to a definition of the logical network. From multiple queues that each correspond to a different one of the physical sites spanned by the logical network, the method identifying a set of queues to which to store the received set of data. The method stores the received set of data in the identified set of queues. From each respective queue in the identified set of queues, the method sends the set of data through a respective channel between the global manager and a respective local manager at the respective physical site corresponding to the respective queue.

Provision of logical network data from global manager to local managers

Some embodiments provide a method that, at a first machine that operates at a first physical site as a primary global manager for a logical network spanning a plurality of physical sites, receives a set of ordered data describing a configuration of the logical network. The method stores, in a particular order, the received set of ordered data in a first database located at the first physical site. Through a channel between (i) the first machine and (ii) a second machine that operates at a second physical site as a secondary global manager for the logical network in case of failure of the primary global manager, the method provides the set of ordered data in the particular order for the second machine to store in a second database in the particular order. The second database located at the second physical site.

Replication of logical network data between global managers

Certain aspects described herein are directed to methods and systems for updating a status of a first process. In certain aspects, a method includes periodically examining a first table stored in a consistent and distributed database, wherein the table includes a first indication of a status of the first process and a second indication of a status of a second process and the first process and the second process are clustered for implementing functions of a distributed application in a distributed manner. The method further includes determining that the first indication has not changed during a first time period and changing the status of the first process in a second table to reflect that the first process is non-operational, wherein a different share of workload associated with the distributed application is performed by the second process as compared to when the first process was operational.

Group membership and leader election coordination for distributed applications using a consistent database

Certain embodiments described relate to methods and systems for adding one or more nodes to a first cluster including a first node in a computer system. A method performed by the first node comprises retrieving a first cluster configuration associated with the first cluster from a distributed database through a first database server (DBS) and creating a second cluster configuration using the first cluster configuration and information received from a second node as part of a request to join the first cluster. The method further comprises populating a first one or more local trust stores of a first one or more processes executing on the first node with a second one or more security certificates of a second one or more processes executing on the second node. The method further comprises writing the second cluster configuration to the distributed database and returning the second cluster configuration to the second node.

A distributed shared log storage system employs an adapter that translates Application Programming Interfaces (APIs) for a big data application to APIs of the distributed shared log storage system. An instance of an adapter is configured for different big data applications in accordance with a profile thereof, so that the big data applications can take on a variety of added characteristics to enhance the application and/or to improve the performance of the application. Included in the added characteristics are global or local ordering of operations, replication of operations according to different replication models, making the operations atomic and caching.

Distributed shared log storage system having an adapter for heterogenous big data workloads

A distributed shared log storage system employs an adapter that translates APIs for a big data application to APIs of the distributed shared log storage system. The adapter is configured for different big data applications in accordance with a profile thereof, so that storage performance using the distributed shared log storage system can be comparable to the storage performance of the profiled big data application. An over-utilized adapter instance is detected and the workload assigned to the over-utilized adapter instance is either moved to a different adapter instance that can handle the workload or split among two or more adapter instances.

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Cupertino, CA, United States of America

Cheng Zhang