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From "Shashikant Banerjee (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-13172) Impelement task Manager to handle create and delete multiLevel nodes is SnapshotSkipList
Date Tue, 17 Apr 2018 09:18:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-13172?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Shashikant Banerjee resolved HDFS-13172.
----------------------------------------
    Resolution: Won't Do

Inline deletion of multilevel nodes in snapshotSkipList is quite fast. Moreover, async deletion
of multilevel nodes from snapshotSkipList containing snapshotDiffs leads to complicated scenarios

of maintaining quota consistency semantics in HDFS. It won't be done for now. 

> Impelement task Manager to handle create and delete multiLevel nodes is SnapshotSkipList
> ----------------------------------------------------------------------------------------
>
>                 Key: HDFS-13172
>                 URL: https://issues.apache.org/jira/browse/HDFS-13172
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: snapshots
>            Reporter: Shashikant Banerjee
>            Assignee: Shashikant Banerjee
>            Priority: Major
>
> This Jira proposes to add a Taskmanager in SnapshotManager. The TaskManager will maintain
a TaskQueue. Each task in the task queue will handle creation of multiple levels of a node
or or balancing of the list in case of deletion of  a node in the SnapshotSkipList.



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