[hibernate-dev] HSEARCH-598 (was: Beginner's tasks for Hibernate Search and Hibernate OGM)
Hi Guillaume,
I'm aware of the issue, and I wouldn't mind some help on it: it would
be better to fix the MassIndexer design to use a limited set of
threads than to expose more metadata information, don't you agree?
The reason for me to not have given a high priority to HSEARCH-598 are
1) there are easy workarounds
2) I have no tests
Writing an automated test is in this case I think 90% of the
complexity; if you would like to do that, I think I could fix it
quickly or at least propose many possible solutions.
Ideally for this to be included in 4.1.0.Final we should finish it
next week.. do you think you could help with it?
Sanne
On 1 March 2012 10:22, Guillaume Smet <guillaume.smet(a)gmail.com> wrote:
Hi Emmanuel,
Here is what I have in mind:
- Providing a nice API to get the indexed classes. Currently I use
something extracted from MassIndexerImpl#toRootEntities. We use it
currently for our reindexAll implementation. As the MassIndexer uses
too much threads and connections when you have a lot of entities, it
allows us to limit this number by working an entity at a time. This
one should be easy: the code is already written but it needs
refactoring and a proper API.
- https://hibernate.onjira.com/browse/HSEARCH-598 : this is the main
issue why we need the above workaround. I'm pretty sure it could be
possible to set a global maximum number of threads instead of a limit
per entity which is a problem when you have a lot of indexed entities.
Just to explain the problem, we have customers which don't authorize
more than 20 connections to the database cluster for applications with
only a few users. It's currently difficult to use the MassIndexer out
of the box in this particular use case. I don't know the MassIndexer
code well enough to know if it's an easy task or not but it might be.
BTW, on the same subject, it might be a good idea to work together at
Mix-IT in Lyon - I saw you've planned to speak here.
--
Guillaume
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