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From "P.C.Sun (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (JCR-3333) The binary file entities are stored twice in the DB
Date Tue, 12 Jun 2012 02:07:42 GMT

    [ https://issues.apache.org/jira/browse/JCR-3333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13293285#comment-13293285

P.C.Sun commented on JCR-3333:

I think it's the default setting. But is it possible to change to data store if we've already
used the Simple Persistence mgr? And there is another system which is using Liferay CE 6.0.6
- JCR 1.6.1, as you said not support data store, we are considering to upgrade to new JCR.
But considering liferay based on JCR 1.6 API, could u let me know any big changes or release
note of JCR about API update? 

> 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.

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