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Type: Bug
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Resolution: Works as Designed
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Priority: Minor - P4
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None
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Affects Version/s: None
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Component/s: Replication
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Labels:None
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Fully Compatible
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ALL
Initial sync collection clone progress can go above 100% sometimes
mongodb.log.2017-09-20T19-08-46:2017-09-19T19:09:09.630+0000 I - [repl writer worker 6] logs.task_logg collection clone progress: 120458/181002659 0% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-19T19:10:29.284+0000 I - [repl writer worker 6] logs.task_logg collection clone progress: 270881/181002659 0% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-19T19:11:44.902+0000 I - [repl writer worker 6] logs.task_logg collection clone progress: 424906/181002659 0% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-19T19:12:58.293+0000 I - [repl writer worker 5] logs.task_logg collection clone progress: 568699/181002659 0% (documents copied) ... mongodb.log.2017-09-20T19-08-46:2017-09-20T10:40:26.194+0000 I - [repl writer worker 13] logs.task_logg collection clone progress: 174839559/181002659 96% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T10:41:35.607+0000 I - [repl writer worker 7] logs.task_logg collection clone progress: 176056703/181002659 97% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T10:42:47.384+0000 I - [repl writer worker 7] logs.task_logg collection clone progress: 177297337/181002659 97% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T10:44:03.085+0000 I - [repl writer worker 7] logs.task_logg collection clone progress: 178395481/181002659 98% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T10:45:30.069+0000 I - [repl writer worker 7] logs.task_logg collection clone progress: 179401683/181002659 99% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T10:46:47.082+0000 I - [repl writer worker 8] logs.task_logg collection clone progress: 180586508/181002659 99% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T10:48:28.651+0000 I - [repl writer worker 8] logs.task_logg collection clone progress: 181819211/181002659 100% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T10:49:30.019+0000 I - [repl writer worker 8] logs.task_logg collection clone progress: 182639239/181002659 100% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T10:50:52.630+0000 I - [repl writer worker 8] logs.task_logg collection clone progress: 183469037/181002659 101% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T10:51:52.210+0000 I - [repl writer worker 8] logs.task_logg collection clone progress: 184232500/181002659 101% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T10:53:02.187+0000 I - [repl writer worker 8] logs.task_logg collection clone progress: 185050359/181002659 102% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T10:54:28.684+0000 I - [repl writer worker 5] logs.task_logg collection clone progress: 186264701/181002659 102% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T10:55:35.874+0000 I - [repl writer worker 5] logs.task_logg collection clone progress: 187067096/181002659 103% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T10:57:21.672+0000 I - [repl writer worker 4] logs.task_logg collection clone progress: 188209948/181002659 103% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T10:58:46.080+0000 I - [repl writer worker 4] logs.task_logg collection clone progress: 189385860/181002659 104% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T11:00:02.865+0000 I - [repl writer worker 4] logs.task_logg collection clone progress: 190523332/181002659 105% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T11:01:20.087+0000 I - [repl writer worker 4] logs.task_logg collection clone progress: 191835349/181002659 105% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T11:02:28.444+0000 I - [repl writer worker 4] logs.task_logg collection clone progress: 193119747/181002659 106% (documents copied) mongodb.log.2017-09-20T19-08-46:2017-09-20T11:03:47.338+0000 I - [repl writer worker 4] logs.task_logg collection clone progress: 194298584/181002659 107% (documents copied)
This collection had a lot of documents so initial sync took a few hours (~16) and it seems that it grew by 7% within that time period. The total number of documents to copy wasn't updated since the initial sync started though resulting in inaccurate progress % info.