Elasticsearch mongodb river issues


I have a mongodb with 2 collections lets say they are "A" and "B".
I am using elasticsearch to index both the above collections with the help
of "https://github.com/richardwilly98/elasticsearch-river-mongodb/" mongodb
Collection "A" has 5million documents and Collection "B" has 10 million

The problems I am facing are as follows.

  1. Indexing is taking a long time.
  2. The river keeps on querying the oplog even when there is no operation
    performed. For eg: I see oplog queries on mongodb on 21 July even when no
    operation is performed on that day.

Is this a issue with mongodb tailable or is it the way I configured my
elasticsearch river?
Any help with this please.


Aditya A

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