solr cloud updatehandler stats mismatch

[Wei]

Hi,

I use the following api to track the number of update requests:

/solr/collection1/admin/mbeans?cat=UPDATE&stats=true&wt=json


Result:


   - class: "org.apache.solr.handler.UpdateRequestHandler",
   - version: "6.4.2.1",
   - description: "Add documents using XML (with XSLT), CSV, JSON, or
   javabin",
   - src: null,
   - stats:
   {
      - handlerStart: 1509824945436,
      - requests: 106062,
      - ...


I am quite confused that the number of requests reported above is quite
different from the count from solr access logs. A few times the handler
stats is much higher: handler reports ~100k requests but in the access log
there are only 5k update requests. What could be the possible cause?

Thanks,
Wei