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https://issues.apache.org/jira/browse/JAMES-2805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16871037#comment-16871037
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Tellier Benoit edited comment on JAMES-2805 at 6/24/19 10:38 AM:
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I created the tasks for the tasks we plan to tackle in the very near future.
Note that to complete this work we will also need:
- Implement DeletedMessageVault::delete. There are some interactions with
deduplication that can happen in the blobStore. We thus decided to postpone
this task to gain some better insights. A temporary acceptable step might be to
just delete the meta-data.Another alternative might be to delete all the
deletedMessages sharing the same blob. Anyway this topic needs further
discussions.
- Webadmin Task for moving old data in mail repository to new vault (for those
who already tried thius feature, we should allow a migration)
- CassandraBlobStore should deal with containers - the proposed table
structure needs review and further discussions.
- We also plan to write a "how to" + documentation
was (Author: btellier):
I created the tasks for the tasks we plan to tackle in the very near future.
Note that to complete this work we will also need:
- Implement DeletedMessageVault::delete. There are some interactions with
deduplication that can happen in the blobStore. We thus decided to postpone
this task to gain some better insights. A temporary acceptable step might be to
just delete the meta-data.Another alternative might be to delete all the
deletedMessages sharing the same blob. Anyway this topic needs further
discussions.
- Webadmin Task for moving old data in mail repository to new vault (for those
who already tried thius feature, we should allow a migration)
- CassandraBlobStore should deal with containers - the proposed table
structure needs review and further discussions.
> Top level implementation of the DeletedMessageVault
> ---------------------------------------------------
>
> Key: JAMES-2805
> URL: https://issues.apache.org/jira/browse/JAMES-2805
> Project: James Server
> Issue Type: Improvement
> Reporter: Tellier Benoit
> Priority: Major
>
> While working on the deletedMessageVault, we targeted in MAILBOX-381 a first
> implementation on top of MailRepositories
> That decision was unfortunate as then one can browse the content of the
> deletedMessageVault vault through webAdmin.
> Thus we decided to implement DeletedMessageVault as a separate component.
> That component has the following considerations:
> - Should have a low storage cost
> - Cold storage and delays upon reads are acceptable as one does not expect a
> restore/export to be fast
> - Find an efficient way to implement retention (deleting too old emails)
> without a full scan
> We decided to provide an implementation above the blobStore and a metaData
> store (cassandra)
> Retention will be implemented with object storage buckets (one month = 1
> bucket). We could then simply delete a bucket when all the mails it contains
> are older than the retention period.
> Querying the deleteMessageVault will first be done with a full scan. Later
> enhancement can be done by providing a per-bucket (immutable) Lucene index -
> once the bucket is no longer the latest one.
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