Hi,
After reading your explanation, I’m still confused about your problem. First, what's the meaning of 'object abnormal publishing’? Can you add some example codes to define your problem? Besides, you have fixed this problem in your sync pr, I suggest you create an individual branch to solve this problem since this problem is a common case. By the way, these are few grammar mistakes in your explanation, try to avoid them next time. :) Thanks XuYi On 09/4/2019 16:46，李天安<[email protected]> wrote： Hi, Recently，in developing sync module, I found a very important bug in the process of unit testing, which will seriously affect the normal operation of the system. During the unit test of sync module, I found that when I retrieved the next sequence folder from the multi-file directory manager, I may get an unseuqence folder, which made me confused and began to track down the problem. In IoTDB, sequence folders and unsequence folders are specified as user parameters, and currently the name of the sequence folder is "sequence" and the name of unsequence folder is “unsequence”, so there must be no overlap between the two parameters. Therefore, I suspected that it was an abnormal publishing of the sequence folder list and the unsequence folder list. I tracked all the places where it was possible to use the two objects and found that it wil returned the object directly when I require them from multi-file directory manager. It is further found that merging the two objects acquired in Storage Group Processor causes problems. The problem is very simple and hidden but serious. The reason why it has not been found is that this method of incorrectly modifying the contents of the list is currently only used in the delete module, which is nearly unused. Now that this problem has been solved in sync pr, I just want to share with you here. The issue of variable publishing still needs to be paid attention to. In addition, people interested in sync module can focus on https://issues.apache.org/jira/browse/IOTDB-198. Best Regards, ————————————————— Tianan Li School of Software, Tsinghua University 李天安 清华大学 软件学院
