Context:

With OPT-3505, Optimize now re-imports running process instances if specific suspension operations have occured. In some cases this is done by re-importing specific instances, but in the case of batch suspension operations all instances have to be re-imported, which is currently achieved by resetting the import index. However, this could lead to a potential race condition as described in the comment here: https://github.com/camunda/camunda-optimize/pull/2074#discussion_r435817458.

To avoid this race condition, we need a way to clear the queue of the running instance import before resetting the index timestamps.

AT:

• The above described race condition is avoided by resetting any potential current import jobs before resetting the import index