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https://issues.apache.org/jira/browse/HDDS-981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16759720#comment-16759720
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Lokesh Jain edited comment on HDDS-981 at 2/4/19 10:09 AM:
-----------------------------------------------------------
v6 patch fixes failure in TestSCMChillMode. TestRatisPipelineProvider and
TestCloseContainerByPipeline will be fixed by HDDS-1046 and HDDS-1047
respectively.
was (Author: ljain):
v6 patch fixes failure in TestSCMChillMode.
> 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
> Priority: Major
> Attachments: HDDS-981.001.patch, HDDS-981.002.patch,
> HDDS-981.003.patch, HDDS-981.004.patch, HDDS-981.005.patch, HDDS-981.006.patch
>
>
> 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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