Lokesh Jain created HDDS-981:
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Summary: Block allocation should involve pipeline selection and
then container selection
Key: HDDS-981
URL: https://issues.apache.org/jira/browse/HDDS-981
Project: Hadoop Distributed Data Store
Issue Type: Bug
Components: SCM
Reporter: Lokesh Jain
Assignee: Lokesh Jain
Currently SCM maintains a list of preallocated containers and allocates blocks
from these containers. This approach does not work well with dynamics of the
cluster where new nodes are being added and pipelines are destroyed. New
containers are not created until all the preallocated containers are exhausted.
The Jira aims to establish a criteria in block allocation where first a
pipeline is selected amongst the available pipelines and then a container is
selected in that pipeline. In order to handle the dynamics of the cluster a
fixed interval pipeline creator job can be launched which creates pipelines in
the system.
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