Anton Alfred created STORM-3777:
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Summary: Ability to have a default doubling of resource when
worker count increases
Key: STORM-3777
URL: https://issues.apache.org/jira/browse/STORM-3777
Project: Apache Storm
Issue Type: New Feature
Components: storm-core
Reporter: Anton Alfred
Let's say we have a topology with the following executors configurations
{code:java}
reader: 1
bolt1: 2
bolt2: 4
bolt3: 4
Topology Memory: 1 GB
noOfWorkers: 1
{code}
When we submit the topology the bolts and readers are provided this many
executors but when we change the noOfWorkers to say 2. The topology still is
keeping the executors the same for the bolts though there is a second worker
process.
Is it possible to have a default behavior or a policy configuration like an
autoscale of API. If 1 Worker is present it would take this but when more than
1 worker is present it would double these by default (or a policy) without
expecting to be provided manually again.
This way the configuration remains same and only the noOfWorkers keep changing
for scale out and scale in.
This is related to the previous issue of simplified Auto Scaling Auto-Scaling
Resources in a Topology
If this is present, a signal to increase or decrease the workers can be
provided with lessor configuration changes.
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