I reindex the index that has about 9 million doc
_cat/indices shows 9 million but
_count shows 3.6 million.
docs_deleted count in
_cat/indices shows less than 40k so my first question is why there is so many discrepancies.
Once reindex is started, I verified that task got created and processing. When the document count on new index is reaching very close to what shows in
_count, the task is no longer listed. I assume the task is completed with no issue. However, after the task is gone, I waited about 40+ minutes but got no response back from reindex API. Document count on new index is not increasing at all but actually 50+ short from what I expected (i later on verified by query that indeed the 50+ docs are missing from new index).
Since task is gone and docs doesn't seems to be moving at all, I canceled the API call.
I would like to know if anyone have insight of what might have happened and would like to have advice on what I can do if this happened next time.