[hibernate-dev] use_compound_file

[Emmanuel Bernard]

Plus it seems the default value is compound = true, just like in  
Lucene. This is not what we are saying in the doc.

Am I completely off-base?

On  Nov 12, 2008, at 17:59, Emmanuel Bernard wrote:

> Actually I sat down and read more about compound file format.
> Basically, instead of creating several files representing a single  
> segment, the compound format creates a single file for the whole  
> segment.
> And you can have a mix of compound and non compound segments for a  
> given index. So you can set different settings for transactional and  
> batch in theory. Not sure why though.
>
> Compounds Pro:
>  - less file handlers
>
> Compounds Con:
>  - slower at indexing
>  - takes temporarily more space on disk as the uncompound segment is  
> converted to a compound segment when done
>
> I don't think this affects the incremental copy so much are segments  
> are essentially read-only.
>
> I believe this is not the story we tell to people in the doc, so we  
> need to fix that.
>
> On  Nov 11, 2008, at 10:07, Emmanuel Bernard wrote:
>
>> It seems that a few parameters should not be configurable per  
>> transaction|batch
>>  - use_compound_file
>>  - max_field_length? not sure
>>  - term_index_interval (is that a config influencing IndexReader?)
>>
>> What do you think?
>> I am a bit worried to stick them as is in the project / book as  
>> they are right now.
>>
>> Let's try and sort this out today.
>> _______________________________________________
>> hibernate-dev mailing list
>> hibernate-dev at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/hibernate-dev
>
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