Abstract: Methods, systems, and computer programs encoded on computer storage media, for implementing MPP relational databases using containers. One example system initiates primary containers to implement database segment instances. Each segment of the database is stored on a respective storage volume. Each storage volume is mounted on a respective primary container. The system detects a failure of a first primary container that is a segment instance of a first database segment. In response to the detection, the system performs a recovery process. The system unmounts, from the failed first primary container, a first storage volume storing the first database segment. The system selects a standby container from a pool of standby containers and mounts the first storage volume on the selected standby container. The system is reconfigured so that it processes queries for the first database segment using the selected standby container instead of the failed first container.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for dynamically injecting secrets in a pipeline integration system. One of the methods includes receiving, by a pipeline controller, a job identifying a pipeline for executing a plurality of tasks. A preparatory task is invoked for the pipeline that obtains one or more original task definitions for the identified pipeline and generates one or more modified task definitions for the pipeline, wherein each modified task definition references one or more variablized secret names specified as the value of the reserved variable of the one or more configuration files. One or more subsequent execution tasks are invoked using each respective modified task definition. One or more retrieved secrets are injected into an execution environment for each particular execution task.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for generating user interfaces and alerts for applications running on software platforms using indicator files. A method includes obtaining, by a software platform system configured to host computing tasks in a cloud computing environment of the distributed computing system, a user-customizable indicator file that specifies a set of indicators and, for at least one of the indicators, one or more alert thresholds. Each indicator is a measurable parameter for a particular computing task hosted by the software platform system. A monitoring service uses the user-customizable indicator file to obtain one or more values for each of one or more of the indicators from the software platform system. The monitoring service uses the user-customizable indicator file to generate a graphical user interface that includes, for each indicator, data specifying the one or more values for the indicator.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for implementing a health monitoring system for a cloud application platform. One of the methods includes deploying, by a health monitoring application of a cloud application platform that provisions resources from an underlying cloud infrastructure system, probes for testing components of the cloud application platform. Each probe is configured to perform tests that measure performance of a component of the cloud application platform. A probe can attempt to provision resources from the underlying cloud infrastructure system by launching a test application on the cloud application platform and determine whether the test application launched successfully using resources from the underlying cloud infrastructure system.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for implementing a reactive database query retrieval system.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for tracking memory usage. One of the methods includes implementing an instance of a memory usage tracker (MUT) in each process running in a node of a computer system. The MUT initiates a free process for a memory chunk. A current generation of the memory chunk is determined. The MUT determines whether the mapping element's generation precedes the current generation. If the mapping element's generation is old, the MUT treats the long-living rollover account as the owner of the memory chunk to be freed and if the current generation and the mapping element's generation match, then the MUT considers the owner associated with the mapping element as the owner of the chunk. The MUT then adjusts the balance of the determined memory account and/or sub-account and the balance of the mapping element by the freed memory amount.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for parallel time series analysis. One of the methods includes receiving a plurality of data elements. The plurality of data elements are partitioned into a plurality of chunks, wherein the plurality of chunks, including a first chunk and a plurality of additional chunks, have an ordering according to the data elements included in each chunk. Each chunk is assigned to a particular segment of a plurality of segments. A first iteration of an autoregressive integrated moving average is computed for each chunk assigned to each segment. A second iteration of the autoregressive integrated moving average is computed for each chunk assigned to each segment, wherein computing uses the result data for a corresponding preceding chunk in the first iteration. One or more additional iterations of the autoregressive integrated moving average are computed until stopping criteria has been satisfied.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for implementing subscription contexts in a reactive programming system. One of the methods includes receiving, by a reactive programming system comprising one or more computers, a reactive programming program defining an ordering of a plurality of operators, the plurality of operators including a subscriber context operator that writes a value to a subscription context for a particular subscriber, wherein the ordering defines an upstream subscription flow ordering from the particular subscriber to a publisher and a downstream data flow ordering from the publisher to the particular subscriber. The operators are evaluated in the upstream subscription flow ordering, including updating a subscription context of each operator with the value written by the subscriber context operator.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for restricting user access to actuators and generating user interface presentations that include data received from the actuators when the user has access. One of the methods includes receiving, by an applications manager component of an application platform in a cloud computing environment, a request by a user to access application information of an application deployed by an application framework installed on the application platform in the cloud computing environment. The application framework determines, using a token obtained for the user, that the user has permission to access one or more actuators of the application. The application framework generates a data element for the particular actuator and provides the data element for the particular actuator to the applications manager component. The applications manager component generates a user interface presentation that includes the data element.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for implementing reactive transaction management. A method includes: receiving, by an application framework, a program that defines a transaction having a plurality of operations to one or more respective transactional resources; generating, by the application framework, a respective sequence of reactive operators for each transactional resource in the transaction; initiating each respective sequence of reactive operators, including: determining, by the application framework using a first thread, that one of the sequences has not completed; in response, relinquishing computing resources of the first thread; receiving an indication that all of the sequences of reactive operators have completed; determining that none of the sequences of reactive operators failed; and in response, committing the operations of the transaction in each of the one or more transactional resources.

Abstract: Methods, systems, and computer-readable media for on-demand resource provisioning for service instances. An on-demand service broker provisions IaaS resources at service instance creating time. The service broker provides a catalog listing one or more service plans, each service plan corresponds to a set of available resources. A user device selects a respective service plan that matches specific needs of an application that consumes the resources. The service broker generates a deployment manifest based on the selected service plan. The service broker then submits the deployment manifest to a deployment system. The deployment system provisions the resources to the service instance according to the manifest generated by the service broker.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for implementing an integrated cloud system that enables a user to integrate software tasks executing on different software platforms. A method includes maintaining, by an integrated cloud system, a first software platform and a different second software platform that are configured to communicate by a shared networking subsystem. The integrated cloud system receives a first request to deploy instance(s) of a first software task on the first software platform. The first platform deploys the instance(s) of the first software tasks. The integrated cloud system receives a request to deploy instance(s) of a second software task on the second software platform. The second platform deploys the instance(s) of the second software task.

Abstract: A mobile computing device is operated to receive a trigger at a first instance. The trigger may be associated with a predefined condition or event or action. The mobile computing device may detect the predefined condition or event at a second instance. In response to detecting the predefined condition or event, a notification is activated on the mobile computing device that is based on the trigger.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for enforcing a mapping between entities in a database and aggregates in an application framework. One of the methods includes receiving a request to populate a program object corresponding to an entity in a first relation of a relational database, the relational database is queried to obtain values for one or more attributes of the entity in the first relation and a plurality of identifiers that each identify a respective entity in the second relation of the relational database. The program object is populated with an aggregate having a complete collection of identifiers representing an m-to-n relationship in the database.

Abstract: A deployment system provides the ability to deploy a multi-node distributed application, such as a cloud computing platform application that has a plurality of interconnected nodes performing specialized jobs. The deployment system may update a currently running cloud computing platform application according to a deployment manifest and a versioned release bundle that includes jobs and application packages. The deployment system determines changes to the currently running cloud computing platform application and distributes changes to each job to deployment agents executing on VMs. The deployment agents apply the updated jobs to their respective VMs (e.g., launching applications), thereby deploying an updated version of cloud computing platform application.

Abstract: A random number generation process generated uncorrelated random numbers from identical random number sequences on parallel processing database segments of an MPP database without communications between the segments by establishing a different starting position in the sequence on each segment using an identifier that is unique to each segment, query slice information and the number of segments. A master node dispatches a seed value to initialize the random number sequence generation on all segments, and dispatches the query slice information and information as to the number of segments during a normal query plan dispatch process.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for performing delegated authorization, including: maintaining resources associated with a resource owner; receiving an access request from a client application requesting access to the resources; performing a first authentication of the resource owner; determining that the first authentication was successful, and providing to the resource owner a request to delegate access to the resources to the client application; receiving a selection of one or more delegated access permissions for the one or more resources to be delegated to the client application; determining that at least one of the one or more delegated access permissions is for a critical resource, and performing a second authentication by requesting multi-factor credentials from the resource owner; authenticating the multi-factor credentials; determining that the second authentication was successful; and granting an access token to the client application

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a distributed parallel processing database system that persists table data in memory to a distributed file system. A distributed parallel processing database system persists table data in memory to a distributed file system. A parameter of creating a database table specifies that data records in the database table and history of changes to the data records can be stored in memory as well as in the distributed file system. When the database table is populated or otherwise modified, data records and the history in memory are evicted to the distributed file system as log files and removed from memory. The log files can be designated as write-only, where the data records, once written, cannot be read by structured query language (SQL) queries, or as read-write, where the data records, once written, can be read by SQL queries.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for providing guided provisioning and configuration of a message broker cluster. One of the methods includes maintaining a message broker platform system configured to host one or more message broker clusters in a cloud computing environment of a distributed computing system. A first software platform system configured to host user-provided computing tasks in the distributed computing system receives a computing task, provisions computing resources in an underlying cloud computing infrastructure, and launches one or more instances of the computing task using the provisioned computing resources in the underlying cloud computing infrastructure. The message broker platform system binds the computing task in the first software platform system to the message broker cluster in the message broker platform system.

Abstract: Methods, systems, and computer readable media for creating segmented virtual networks for service instances. A method includes receiving, by a system controller, a user request requesting creation of a service instance in a software platform system hosting a plurality of service instances. The system controller provides, to a service broker proxy, a request to provision resources for the requested service instance. The service broker proxy creates a new virtual network for the requested service instance. The service broker proxy provides one or more cloud configuration parameters of the new virtual network to a deployment manager that provisions resources in an underlying cloud computing infrastructure. The service broker proxy provides, to an on-demand service broker, a request to provision computing resources in the underlying cloud computing infrastructure to implement the service instance having the one or more cloud configuration parameters.