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https://issues.apache.org/jira/browse/HDDS-1291?focusedWorklogId=217460&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-217460
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ASF GitHub Bot logged work on HDDS-1291:
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Author: ASF GitHub Bot
Created on: 22/Mar/19 22:08
Start Date: 22/Mar/19 22:08
Worklog Time Spent: 10m
Work Description: ajayydv commented on pull request #639: HDDS-1291. Set
OmKeyArgs#refreshPipeline flag properly to avoid readi…
URL: https://github.com/apache/hadoop/pull/639
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Issue Time Tracking
-------------------
Worklog Id: (was: 217460)
Time Spent: 40m (was: 0.5h)
> Set OmKeyArgs#refreshPipeline flag properly to avoid reading from stale
> pipeline
> --------------------------------------------------------------------------------
>
> Key: HDDS-1291
> URL: https://issues.apache.org/jira/browse/HDDS-1291
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Reporter: Xiaoyu Yao
> Assignee: Xiaoyu Yao
> Priority: Blocker
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> After HDDS-1138, the OM client will not talk to SCM directly to fetch the
> pipeline info. Instead the pipeline info is returned as part of the
> keyLocation cached by OM.
>
> In case SCM pipeline is changed such as closed, the client may get invalid
> pipeline exception. In this case, the client need to getKeyLocation with
> OmKeyArgs#refreshPipeline = true to force OM update its pipeline cache for
> this key.
>
> An optimization could be queue a background task to update all the
> keyLocations that is affected when OM does a refreshPipeline. (This part can
> be done in 0.5)
> {code:java}
> oldpipeline->newpipeline{code}
>
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