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Avoiding race conditions for advanced agents

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To avoid race conditions associated with custom actions for advanced agents, make the actions thread-safe by ensuring that the agent runs on one node at a time.

Agent rules are no longer being actively developed; Queue Processor rules replace standard agents. For more information, see Use Job Scheduler and Queue Processor rules instead of agents.

  1. In the navigation pane of Admin Studio, click Resources Agents .

  2. Click the name of an agent that shows exceptions to open the agent in Dev Studio.

  3. For each agent, expand the agent record to display the Advanced area.

    If you see a warning that agents will be deprecated, you can still modify the agent as described here.
  4. Configure the Advanced settings:

    • Select the Run this agent on only one node at a time check box.
    • Configure the agents to run on one node at a time at staggered intervals by selecting the Delay next run of agent across the cluster by specified time period check box.
    • Enter a time window during which to block agent actions in the Block execution within this time window fields.
  5. Click Save.

  6. Repeat steps 2 through 5 for each agent which was causing exceptions.

  7. Retest your application in a multi-node system.

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