Need to specify different instance size/type depending on role
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Key: WHIRR-332
URL: https://issues.apache.org/jira/browse/WHIRR-332
Project: Whirr
Issue Type: Bug
Components: service/hadoop
Affects Versions: 0.5.0
Reporter: Paul Baclace
When setting up Hadoop, whirr.hardware-id is used in the configuration to set a
single instance size/type for both nn,jt and dn,tt roles, but there are
workloads that benefit from having a different instance size/type for each
role. This need is even greater for ensembles with Zookeeper and HBase.
Without this, a small Whirr cluster underutilizes resources.
whirr.hardware-id should be a used to set a default instance size/type, and
variations like whirr.${role}.hardware-id could be used to set size/type more
specifically. This is a simple, obvious, and easy to implement mechanism to
provide this functionality.
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