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https://issues.apache.org/jira/browse/HDFS-15614?focusedWorklogId=497468&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-497468
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ASF GitHub Bot logged work on HDFS-15614:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 08/Oct/20 17:40
Start Date: 08/Oct/20 17:40
Worklog Time Spent: 10m
Work Description: smengcl opened a new pull request #2370:
URL: https://github.com/apache/hadoop/pull/2370
https://issues.apache.org/jira/browse/HDFS-15614
Added `checkAndProvisionSnapshotTrashRoots` in `FSNamesystem`. Triggered in
`NameNode` on startup if `dfs.namenode.snapshot.trashroot.enabled` set to
`true`.
UT added in `TestDistributedFileSystem`.
The logic is ready for review.
I am considering adding another UT for HA case.
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Issue Time Tracking
-------------------
Worklog Id: (was: 497468)
Remaining Estimate: 0h
Time Spent: 10m
> Initialize snapshot trash root during NameNode startup if enabled
> -----------------------------------------------------------------
>
> Key: HDFS-15614
> URL: https://issues.apache.org/jira/browse/HDFS-15614
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Siyao Meng
> Assignee: Siyao Meng
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> This is a follow-up to HDFS-15607.
> Goal:
> Initialize (create) snapshot trash root for all existing snapshottable
> directories if {{dfs.namenode.snapshot.trashroot.enabled}} is set to
> {{true}}. So admins won't have to run {{dfsadmin -provisionTrash}} manually
> on all those existing snapshottable directories.
> The change is expected to land in {{FSNamesystem}}.
> Discussion:
> 1. Currently in HDFS-15607, the snapshot trash root creation logic is on the
> client side. But in order for NN to create it at startup, the logic must
> (also) be implemented on the server side as well. -- which is also a
> requirement by WebHDFS (HDFS-15612).
> 2. Alternatively, we can provide an extra parameter to the
> {{-provisionTrash}} command like: {{dfsadmin -provisionTrash -all}} to
> initialize/provision trash root on all existing snapshottable dirs.
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