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https://issues.apache.org/jira/browse/HDDS-2161?focusedWorklogId=316959&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-316959
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ASF GitHub Bot logged work on HDDS-2161:
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Author: ASF GitHub Bot
Created on: 23/Sep/19 20:22
Start Date: 23/Sep/19 20:22
Worklog Time Spent: 10m
Work Description: anuengineer commented on pull request #1491: HDDS-2161.
Create RepeatedKeyInfo structure to be saved in deletedTable
URL: https://github.com/apache/hadoop/pull/1491
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Issue Time Tracking
-------------------
Worklog Id: (was: 316959)
Time Spent: 2h 40m (was: 2.5h)
> Create RepeatedKeyInfo structure to be saved in deletedTable
> ------------------------------------------------------------
>
> Key: HDDS-2161
> URL: https://issues.apache.org/jira/browse/HDDS-2161
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Reporter: Dinesh Chitlangia
> Assignee: Dinesh Chitlangia
> Priority: Major
> Labels: pull-request-available
> Time Spent: 2h 40m
> Remaining Estimate: 0h
>
> Currently, OM Metadata deletedTable stores <Key Name, OMKeyInfo>
> When a user deletes a Key, <key name, omKeyInfo> is moved to deletedTable.
> If a user creates and deletes key with exact same name in quick succession
> repeatedly, then old <key name, omKeyInfo> can get overwritten and we may be
> left with dangling blocks.
> To address this, currently we append delete timestamp to keyname and preserve
> the multiple delete attempts for same key name.
> However, for GDPR compliance we need a way to check if a key is deleted from
> deletedTable and thus given the above explanation, we may not get accurate
> information and it must also confuse the users.
>
> This Jira aims to:
> # Create new structure RepeatedKeyInfo which allows us to group multiple
> KeyInfo which can be saved to deletedTable corresponding to a keyname as
> <KeyName, RepeatedKeyInfo>
> # Due to this, before we move a key to deletedTable, we need to check if key
> with same name exists. If yes, then fetch the existing instance and add the
> latest key to the list, store it back to deletedTable, else create a new
> instance and save to table
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