Sunil G reassigned YARN-1799:

    Assignee: Sunil G

> Enhance LocalDirAllocator in NM to consider DiskMaxUtilization cutoff
> ---------------------------------------------------------------------
>                 Key: YARN-1799
>                 URL: https://issues.apache.org/jira/browse/YARN-1799
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>    Affects Versions: 2.3.0
>            Reporter: Sunil G
>            Assignee: Sunil G
> LocalDirAllocator provides paths for all tasks for its local write.
> This considers the good list of directories which are selected by the 
> HealthCheck mechamnism in LocalDirsHandlerService
> getLocalPathForWrite() considers whether input demand "size" can meet the 
> "capacity" in "lastAccessed" directory.
> If more tasks asks for path from LocalDirAllocator, then it is possible that 
> the allocation is done based on the current disk availability at that given 
> time.
> But this path would have earlier given to some other tasks to write and they 
> may be sequentially doing writing.
> It is better to check for an upper cutoff for disk availability

This message was sent by Atlassian JIRA

Reply via email to