18 Mar
2013
18 Mar
'13
5:56 p.m.
Mmmm the new problem seems somewhat different:
mysql> select * from xwikistatsdoc where xws_id='-1514641140';
+-------------+------------+--------------------------------------------+
| XWS_ID | XWS_NUMBER | XWS_NAME |
+-------------+------------+--------------------------------------------+
| -1514641140 | 1981003594 | DUMMY\.Operations.IOT Testing Guideline |
+-------------+------------+--------------------------------------------+
1 row in set (0.00 sec)
mysql> select * from xwikistatsdoc where xws_name='DUMMY\.Operations.IOT
Testing Guideline' and xws_number='1981003594';
+----------------------+------------+-------------------------------------------+
| XWS_ID | XWS_NUMBER | XWS_NAME
|
+----------------------+------------+-------------------------------------------+
| -6621163153525844851 | 1981003594 | DUMMY.Operations.IOT Testing
Guideline |
+----------------------+------------+-------------------------------------------+
Exception was: R40000XWIKI6990 migration failed while converting ID from
[-1514641140] to [-6621163153525844851]
Maybe issue is having 2 entries with same XWS_NAME and XWS_NUMBER, only
difference in name being "." versus "\." ?
In that case what seems strange, is that when that migration starts, I get
the following warnings:
... Skipping invalid statistical entry [1260484991] with name [
Blog.Dummy.com.]
I wonder why the "DUMMY.Operations.IOT..." is not skept because of the
"."
??
BR,
Jeremie
2013/3/18 Jeremie BOUSQUET <jeremie.bousquet(a)gmail.com>
Answering myself partly ...
2013/3/18 Jeremie BOUSQUET <jeremie.bousquet(a)gmail.com>
Hello,
I'm trying migration of XWIki 3.5 to 4.5.2, and have some issues ...
First, I must tell that I ran the queries described in [1], to cleanup
the 3 stats tables.
What happened though, is that during the migration I got an OutOfMemory
error ... during migration of xwikistatsdoc.
I relaunched with more heap (2Go), but got it again.
I relaunched after activating safemode for that particular migration (R40000XWIKI6990),
but then I got an issue on duplicate key for the xwikistatsdoc table:
Caused by: com.xpn.xwiki.XWikiException: Error number 3005 in 3:
R40000XWIKI6990 migration failed while converting ID from [232911443] to
[7825842251281349221]
A quick analysis of incriminated rows shows (sorry for display):
+----------------------+------------+----------------------------+---------------+
| XWS_ID | XWS_NUMBER | XWS_NAME |
XWS_CLASSNAME |
+----------------------+------------+----------------------------+---------------+
| 232911443 | 1956069455 | Main |
|
| 5956685394971351254 | 1956069455 | |
|
| 7825842251281349221 | 1956069455 | Main |
|
+----------------------+------------+----------------------------+---------------+
To me it seems that as migration process was interrupted, maybe stat with
id 232911443 was migrated successfully (in a previous run) to id 7825842251281349221,
but old row was not removed.
So when migration occurs again, it tries to migrate that same line again
and fails.
So I will try to run again after removing that line,
... that fails again, on another row. I believe that means that my table
is now corrupted and won't migrate, unless I remove the "potential"
duplicates beforehand ...
I wonder if it could be somewhat possible to write such a script, ie that
would remove already migrated rows, or rows that once migrated will
generate duplicates ?
If not I would go back to my backup ...
but in case it fails, is it possible to only:
- put back my backup of the 3 stats tables only (as the rest was
successfully migrated)
- relaunch the migration
Would I need to update something in the migration temp tables to achieve
that ? (ie restart migration only for stats tables), or will it do it by
itself as it knows that step was unsuccessful ?
Asking that because migration is painfully long, so I prefer to prepare
myself to loose less time ... tomorrow ;-)
Bonus question: There are plenty of rows in xwikistatsdoc with empty
value in "XWS_NAME" field. Are these normal ? Can I / Should I purge them ?
Br,
Jeremie
[1] http://jira.xwiki.org/browse/XWIKI-8129