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Posted to hdfs-dev@hadoop.apache.org by "Xiaoyu Yao (JIRA)" <ji...@apache.org> on 2017/08/02 20:35:00 UTC

[jira] [Created] (HDFS-12252) Ozone: SCM: Container State Machine -1- Track container creation state in SCM

Xiaoyu Yao created HDFS-12252:
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             Summary: Ozone: SCM: Container State Machine -1- Track container creation state in SCM
                 Key: HDFS-12252
                 URL: https://issues.apache.org/jira/browse/HDFS-12252
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Xiaoyu Yao
            Assignee: Xiaoyu Yao


Currently, SCM only persist the pipeline info of a container in container.db upon allocation. This provides better scalability which offloads the query of container info to datanodes. 

However, this is not enough enough information for SCM to provide shared container service as other clients may not know the container creation state on datanodes by the creator of the container. 

This is the first patch that introduces container states on SCM and ACK message from creator of the container to update/persist the container state on SCM container store. 





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