maybe many old index should be reindex to new ones at the same time ,and I want to monitor the states ,.
so I have to distinguish them from the result of the /_tasks?action=*reindex ,because the result may contain many actions named "indices:data/write/reindex" .so how can i know this reindex action is from "index1"to "index2",and this reindex action represents reindex from "index 3"to "index 4".
my english is really clumsy ,but can you understand it？