java - GAE Managed VM with automatic scaling and resources config fails with HttpError 409 -

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i'm experiencing following error intermittently while deploying java application appengine using managed vms explicit resource configuration:

deployment failed: https://www.googleapis.com/autoscaler/v1beta2/projects/managedvm409example/zones/us-central1-f/autoscalers?alt=json returned "autoscaler resource name exists in zone or there exists autoscaler controlling given target."> deployed version: 1.385892435190233331

here's configuration i'm using:

<?xml version="1.0" encoding="utf-8"?> <appengine-web-app xmlns="http://appengine.google.com/ns/1.0">     <application>managedvm409example</application>     <version>1</version>      <threadsafe>true</threadsafe>      <precompilation-enabled>false</precompilation-enabled>      <vm>true</vm>      <automatic-scaling>         <min-num-instances>2</min-num-instances>         <max-num-instances>10</max-num-instances>         <cool-down-period-sec>90</cool-down-period-sec>     </automatic-scaling>      <resources>         <cpu>1</cpu>         <memory-gb>4</memory-gb>         <disk-size-gb>10</disk-size-gb>     </resources>      <system-properties>         <property name="java.util.logging.config.file" value="web-inf/logging.properties" />     </system-properties> </appengine-web-app>

the problem seems go away if automatic-scaling configuration element removed, there doesn't seem exotic in there. have ideas on might going on?

edit: situation doesn't change automatic-scaling removed, apparently, it's intermittent.


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