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https://issues.apache.org/jira/browse/HDDS-239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16548289#comment-16548289
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Xiaoyu Yao commented on HDDS-239:
---------------------------------
Thanks [~msingh] for working on this. The patch looks good to me overall. Here
are few comments:
PipelineManager.java
Line 112: NIT: an extra "pipeline" in comments
Line 127: should we use the lease manager to handle the CLOSING->CLOSED state
transition when CLOSE event is not received timely? This could be handled as
TODO in a separate JIRA.
PipelineSelector.java
Line 72-73: should we move the pipelineLeaseManager/stateMachine to
PipelineManager class so that the RatisManagerImpl and StandaloneMangerImpl may
have different state machines? This way, the logic for state transition around
line 261-266 can be consolidated into PipelineManager#initializePipeline().
Also, the createPipeline/closePipeline are not hooked up with state changes
because we currently rely only getReplicationPipeline() for create pipeline.
Line 399: I think we need to handle the create timeout by releasing the nodes
when the DN get closed. Is it possible to include it in this patch? We can
leave the close pipeline, continer, etc. later.
ScmConfigKeys.java:
Line 244: please update the unit test TestOzoneConfigurationFields that
verifies this new configuration keys.
> Add Pipeline StateManager to track and transition pipeline states
> -----------------------------------------------------------------
>
> Key: HDDS-239
> URL: https://issues.apache.org/jira/browse/HDDS-239
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: SCM
> Affects Versions: 0.2.1
> Reporter: Mukul Kumar Singh
> Assignee: Mukul Kumar Singh
> Priority: Major
> Fix For: 0.2.1
>
> Attachments: HDDS-239.001.patch, HDDS-239.002.patch,
> HDDS-239.003.patch
>
>
> With addition of pipeline recovery in Ozone, pipeline failures need to be
> handled both in Ozone client as well as SCM. This jira adds a pipeline state
> Manager to manage pipeline state transitions.
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