Set the implementation to "Standard" in all your current Sequences
(ir.sequence) and all new sequences are created as "Standard" by default
instead of "No Gap" implementation.
**What's the problem Sequences with "No Gap" Implementation?**
"No Gap" is the default value of sequences in Odoo. However, this kind of
sequences cause more locks and can turn a database slow.
Taking as example an invoice, if you assign an invoice number to one record,
but it sill not finish the process, this process must end in order to another
invoice could assign a new number and there was no gaps between the invoice
numbers. It seems to be good at first sight. But the problem start when there
is and chained process.
Imagine that there is one user that executes a process that produces 100
invoices and these at the same time produces 100 journal entries that also use
a consecutive (no gap) sequence. And also those invoices are sent to sign with
and external institution (that could take 2 seconds in giving a response
because of internet latency or server load), and maybe they made another
calculations that makes them to take 5 seconds more for each invoice, and all
this is chained to one single transaction. This means that for 8.5 minutes
anybody else could confirm invoices, neither journal entries of the involved
journals.
Now, think there is 20 users that have to execute a similar process. The
problem turns exponential. If another user comes to make an operation with the
same jornal it will thrown a concurrency failure.
You can mitigate it if you segment each transaction and don't chain them. It
means, making commit for each invoice or process. It reduces the
probability that there is a concurrency error or a lock wait. However, it still
not solve it completely.
**Why to use Sequences with "Standard" Implementation?**
If you use the standard sequence of PosgreSQL, it doesn't lock because at the
moment the request is done, the next sequence number it is changed in an
isolated transaction, and it have not to wait the other transaction to end.
However, if the transaction produces a rollback, this sequence isn't reverted,
it means, it's lost. It may be not not serious because when you cancel or
remove records that number is lost too.
**What this module does?**
To eliminate completely that concurrency/slowness problem, this module changes
all the sequences (ir.sequence) implementation from "No Gap" to "Standard" with
the awareness that it will skip numbers. In the majority of database models
and many users projects there is no problem with that jump occurs.
Also, all newly created sequences will be by default in "Standard"
implementation.
We must avoid to rely on the order in which computed fields (including related fields) and constrains methods are applied.
Due to a recent change into the ORM, the contrains on the model_id into CustomInfoTemplate is now called AFTER the recompute of the related model field into property_ids.info_value_ids
As side effect, when the constrains is called, the model on the info value is already updated with the new value and we no more know the old value....
* Now you can define properties types, and access rules are inherited from the model/record
linked to the custom info record.
* Simplified version of computed value.
* Implement for res.partner.
* Add tests and fix bugs discovered in the meantime.
* Allow to disable partner custom info tab, and custom info menu.
* All of it can be set within general settings.
* Now, by default, this module does not display custom info for partners unless in demo mode.
Better fit for a base module.
* You can disable the top menu entry too if it disturbs you, or enable it for everybody.
* Give a special form when editing in partner custom info tab.
* Sortable properties.
* Sort values at onchange time.
* Improve performance in onchange.
* Split in several model files.
Previously export is slow on large number of rows.
This fix ensure that sheet.insert_rows is called only once for all rows,
instead of insert 1 row for every rows
Erick Birbe
OCA-git-bot
Stéphane Bidoul (ACSONE)
oca-travis
Laurent Mignon (ACSONE)
Fanha Giang
Jairo Llopis
Sergio Teruel Albert
Pedro M. Baeza
Carlos Incaser
Akim Juillerat
OCA Transbot
Jared Kipe
sebalix
Rodrigo Macedo
kittiu
Thomas Pot