Any explanation about this ConcurrentModificationException, so that we can design gae app accordingly ?!
On Oct 25, 12:25 pm, Matija <matija.jerko...@gmail.com> wrote: > This is log when this ConcurrentModificationException happened again. > One request starts chain of tasks and sometimes I get this exception. > I must repeat that when this exception happened, there was no > datastore put operations. I am using datastore transaction only to > ensure that two task enqueue together or none. Interesting, but during > this chain of tasks I have had only one server instance available. So > there was no other concurrent task or web request execution. > > 10-25 02:54AM 16.992 /_ah/queue/sz 200 61ms 158cpu_ms 120api_cpu_ms > 10-25 02:54AM 16.822 /_ah/queue/ru 200 154ms 117cpu_ms 40api_cpu_ms > 10-25 02:53AM 58.223 /_ah/queue/sz 200 124ms 278cpu_ms 240api_cpu_ms > 10-25 02:53AM 58.128 /_ah/queue/ru 200 148ms 199cpu_ms 180api_cpu_ms > 10-25 02:53AM 58.034 /_ah/queue/ru 200 178ms 164cpu_ms 67api_cpu_ms > 10-25 02:53AM 58.033 /_ah/queue/ru 200 86ms 69cpu_ms 30api_cpu_ms > 10-25 02:53AM 57.755 /_ah/queue/ru 200 281ms 38cpu_ms > 10-25 02:53AM 57.491 /_ah/queue/ru 200 266ms 19cpu_ms > 10-25 02:53AM 57.460 /_ah/queue/sz 200 263ms 238cpu_ms 180api_cpu_ms > 10-25 02:53AM 57.441 /_ah/queue/sz 200 218ms 118cpu_ms 80api_cpu_ms > 10-25 02:53AM 57.299 /_ah/queue/sz 200 305ms 238cpu_ms 200api_cpu_ms > 10-25 02:53AM 57.154 /_ah/queue/ru 200 337ms 55cpu_ms 16api_cpu_ms > 10-25 02:53AM 57.138 /_ah/queue/ru 200 311ms 108cpu_ms 30api_cpu_ms > 10-25 02:53AM 57.122 /_ah/queue/ru 200 245ms 89cpu_ms 30api_cpu_ms > 10-25 02:53AM 57.088 /_ah/queue/ru 200 203ms 96cpu_ms 58api_cpu_ms > 10-25 02:53AM 56.970 /_ah/queue/sz 200 241ms 138cpu_ms 80api_cpu_ms > 10-25 02:53AM 56.878 /_ah/queue/sz 200 255ms 139cpu_ms 120api_cpu_ms > 10-25 02:53AM 56.691 /_ah/queue/ru 200 382ms 77cpu_ms > 10-25 02:53AM 56.678 /_ah/queue/ru 200 266ms 108cpu_ms 30api_cpu_ms > 10-25 02:53AM 56.645 /_ah/queue/ru 200 214ms 78cpu_ms 40api_cpu_ms > > 10-25 02:53AM 56.626 /_ah/queue/ru 500 144ms 175cpu_ms 40api_cpu_ms > 4kb > > 10-25 02:53AM 56.451 /_ah/queue/ru 200 156ms 96cpu_ms 0kb > 10-25 02:53AM 56.289 /_ah/queue/ru 200 165ms 155cpu_ms 0kb > 10-25 02:53AM 56.159 /_ah/queue/de 200 123ms 190cpu_ms 112api_cpu_ms > 10-25 02:53AM 55.571 /_ah/queue/ru 200 653ms 146cpu_ms 50api_cpu_ms > 10-25 02:53AM 55.502 /_ah/queue/de 200 637ms 195cpu_ms 117api_cpu_ms > 10-25 02:53AM 55.439 /_ah/queue/ru 200 128ms 66cpu_ms 8api_cpu_ms > 10-25 02:53AM 55.303 /_ah/queue/de 200 198ms 46cpu_ms 8api_cpu_ms > 10-25 02:53AM 55.292 /_ah/queue/ru 200 150ms 300cpu_ms 223api_cpu_ms > 10-25 02:53AM 55.284 /_ah/queue/de 200 82ms 848cpu_ms 810api_cpu_ms > 10-25 02:53AM 54.867 /_ah/queue/de 200 404ms 195cpu_ms 40api_cpu_ms > 10-25 02:53AM 54.861 /_ah/queue/de 200 158ms 2785cpu_ms 2726api_cpu_ms > 10-25 02:53AM 54.562 /_ah/queue/de 200 284ms 292cpu_ms 137api_cpu_ms > 10-25 02:53AM 54.544 /_ah/queue/de 200 160ms 2724cpu_ms 2646api_cpu_ms > 10-25 02:53AM 54.199 /_ah/queue/de 200 334ms 312cpu_ms 137api_cpu_ms > 10-25 02:53AM 53.912 /hessian/user/ps 200 303ms 291cpu_ms -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appeng...@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
