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https://issues.apache.org/jira/browse/JCR-3333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13293450#comment-13293450
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P.C.Sun commented on JCR-3333:
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Hi Thomas,
Thanks for the update. OK, so Jackrabbit version in this case not really
matter, as they all support Data store. So please let me know what will happen
to the old files in the DB, if we change it from SimplePersistenceManager to
Datastore? For the version files, is there any way to clean then or delete
them?
If not able to change the config, any way we can clean the DB, i think we can
directly use SQL to delete, right?
Thanks a lot and looking forwards to your reply.
JACK
> The binary file entities are stored twice in the DB
> ---------------------------------------------------
>
> Key: JCR-3333
> URL: https://issues.apache.org/jira/browse/JCR-3333
> Project: Jackrabbit Content Repository
> Issue Type: Bug
> Components: JCR 2.0
> Environment: Windows 7, Linux
> Reporter: P.C.Sun
> Attachments: repository.xml
>
>
> We are using JCR in Liferay to store documents, which means all documents
> store in DB in binary. As these days, we found the size of DB is increasing
> very fast. So we run the SQL to get size of documents. The SQLs are like:
> 1. select sum(size_) from dlfileentry(liferay table to store file meta data,
> such as name, size); -> All documents size recorded in dlentry table:
> The result is: 43330765874, which means around 40.36 GB
> 2. The DB size report is: around 95.97 GB.
> 3. Within these tables, there are two very big tables:
> j_pm_liferay_binval -> 52.07GB
> j_v_pm_binval -> 43.65 GB
> So the question is: if the document itself is only around 40.36 GB, what are
> those two tables storing? From the table itself, they are the all binval
> tables...Does it mean every document is stored twice or something. What's
> inside those tables?
> In this case, the DB increase around 30 GB within 3 months, really fast, any
> suggestion to improve this?
> As replied from Liferay: the table j_v_pm_binaval is to store the file
> version. However, for the new document, it's also stored, which we think it
> should be created only when a new version is generated. They also mentioned
> to solve this we need to change repository.xml, however, we don't have the
> answer how to deal with the old files, whether they will get lost if we
> change the config file.
> Please let me know whether it is possible to clean them in DB?
> Thank you very much and looking forwards to your reply.
> Best Regards.
> P.C.(JACK) SUN
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