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https://issues.apache.org/jira/browse/HDDS-3214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17148135#comment-17148135
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Arpit Agarwal commented on HDDS-3214:
-------------------------------------
Moved to 0.7.0.
> Unhealthy datanodes repeatedly participate in pipeline creation
> ---------------------------------------------------------------
>
> Key: HDDS-3214
> URL: https://issues.apache.org/jira/browse/HDDS-3214
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: SCM
> Reporter: Nilotpal Nandi
> Assignee: Prashant Pogde
> Priority: Blocker
> Labels: TriagePending, fault_injection
>
> steps taken :
> 1) Mounted noise injection FUSE on all datanodes
> 2) Selected 1 datanode from each open pipeline (factor=3)
> 3) Injected WRITE FAILURE noise with error code - ENOENT on
> "hdds.datanode.dir" path of list of datanodes selected in step 2)
> 4) start PUT key operation of size 32 MB.
>
> Observation :
> ----------------
> # Commit failed, pipelines were moved to exclusion list.
> # Client retries , new pipeline is created with same set of datanodes.
> Container creation fails as WRITE FAILURE injection present.
> # Pipeline is closed and the process is repeated for
> "ozone.client.max.retries" retries.
> Everytime, same set of datanodes are selected for pipeline creation which
> include 1 unhealthy datanode.
> Expectation - pipeline should have been created by selecting 3 healthy
> datanodes available.
>
> cc - [~ljain]
>
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