C G K M O P R S Y

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ConfigManager - Class in org.apache.samza.autoscaling.deployer

This class is a separate module that runs along side with a job, and handles all config changes submitted to a job after the bootstrap of the job.

ConfigManager(Config) - Constructor for class org.apache.samza.autoscaling.deployer.ConfigManager

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getApplicationState(String) - Method in class org.apache.samza.autoscaling.utils.YarnUtil

This function returns the state of a given application.

getCoordinatorServerURL() - Method in class org.apache.samza.autoscaling.deployer.ConfigManager

Gets the current value of the server URL that the job coordinator is serving the job model on.

getCurrentNumContainers() - Method in class org.apache.samza.autoscaling.deployer.ConfigManager

This method returns the number of containers in the job.

getCurrentNumTasks() - Method in class org.apache.samza.autoscaling.deployer.ConfigManager

This method returns the number of tasks in the job.

getRunningAppId(String, int) - Method in class org.apache.samza.autoscaling.utils.YarnUtil

Queries rm for all the applications currently running and finds the application with the matching job name and id

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killApplication(String) - Method in class org.apache.samza.autoscaling.utils.YarnUtil

This function kills an application given the applicationId

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main(String[]) - Static method in class org.apache.samza.autoscaling.deployer.ConfigManager

Main function for using the Config Manager.

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org.apache.samza.autoscaling.deployer - package org.apache.samza.autoscaling.deployer

org.apache.samza.autoscaling.utils - package org.apache.samza.autoscaling.utils

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processConfigMessages() - Method in class org.apache.samza.autoscaling.deployer.ConfigManager

This function reads all the messages with "set-config" type added to the coordinator stream since the last time the method was invoked

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run() - Method in class org.apache.samza.autoscaling.deployer.ConfigManager

This method is an infinite loop that periodically checks if there are any new messages in the job coordinator stream, and reads them if they exist.

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start() - Method in class org.apache.samza.autoscaling.deployer.ConfigManager

Starts the system by starting the consumer

stop() - Method in class org.apache.samza.autoscaling.deployer.ConfigManager

stops the consumer making the system ready to stop

stop() - Method in class org.apache.samza.autoscaling.utils.YarnUtil

This function stops the YarnUtil by stopping the yarn client and http client.

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YarnUtil - Class in org.apache.samza.autoscaling.utils

This is a helper class to interact with yarn.

YarnUtil(String, int) - Constructor for class org.apache.samza.autoscaling.utils.YarnUtil

C G K M O P R S Y