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https://issues.apache.org/jira/browse/SOLR-17851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18013551#comment-18013551
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Gus Heck commented on SOLR-17851:
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And the punchline is that the ObjectCache [~ab] added in SOLR-11642 is quite
similar in concept to my original implementation for SOLR-8349 (I also used a
field on CoreContainer) before I was convinced to move it to the blob store.
So I guess if we have a unit test that demonstrates that two cores can access
the same cached object, and perhaps find a place to document this feature
(something my original ticket unfortunately lacked in retrospect).. I guess
that should go as a note/hint in the ref guide where we mention custom
components... Although looking it doesn't seem like we really address writing
your own.
> Remove BlobHandler and .system collection from 10
> -------------------------------------------------
>
> Key: SOLR-17851
> URL: https://issues.apache.org/jira/browse/SOLR-17851
> Project: Solr
> Issue Type: Task
> Components: blobstore
> Affects Versions: main (10.0)
> Reporter: Eric Pugh
> Assignee: Eric Pugh
> Priority: Major
> Labels: pull-request-available
> Attachments: remove-blob-handler.patch
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Once the Schema Designer migration to the Filestore API is completed, we
> should remove the BlobHandler and associated .system collection.
> This issue proposes deprecating it in 9x now and removing in 10.
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