Single page move (with no redirect) operation created two history entries:
API shows that there were two separate revisions created basing on a single base revision with the same timestamp:
The user moving this page declares she performed a SINGLE operation only. How could it happen? A database communication bug?
Looking at the logs, I see:
+--------+----------+------------+----------------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| log_id | log_type | log_action | log_title | log_params |
+--------+----------+------------+----------------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| 907953 | review | approve-ia | Jana_Kochanowskiego_Dziela_polskie_(1919)/Fraszki/Ksiegi_II/Na_pszczoly_budziwskie | 850902
0
20150421183509 |
| 907955 | review | approve-a | Jana_Kochanowskiego_Dziela_polskie_(1919)/Fraszki/Ksiegi_II/Na_pszczoly_budziwiskie | 850903
850902
20150421183612 |
| 907956 | move | move | Jana_Kochanowskiego_Dziela_polskie_(1919)/Fraszki/Ksiegi_II/Na_pszczoly_budziwskie | a:2:{s:9:"4::target";s:86:"Jana Kochanowskiego Dziela polskie (1919)/Fraszki/Ksiegi II/Na pszczoly budziwiskie";s:10:"5::noredir";s:1:"1";} |
| 907957 | review | approve-a | Jana_Kochanowskiego_Dziela_polskie_(1919)/Fraszki/Ksiegi_II/Na_pszczoly_budziwiskie | 850904
850902
20150421183612 |
| 907958 | move | move | Jana_Kochanowskiego_Dziela_polskie_(1919)/Fraszki/Ksiegi_II/Na_pszczoly_budziwskie | a:2:{s:9:"4::target";s:86:"Jana Kochanowskiego Dziela polskie (1919)/Fraszki/Ksiegi II/Na pszczoly budziwiskie";s:10:"5::noredir";s:1:"1";} |
+--------+----------+------------+----------------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+I too don't understand why this happened, but I would guess that it had to do with the review log entries? Either way, it seems to have happened again at T134080: Page move recorded twice