How to get last Document insert in Solr?

问题

My Problem is..

when I want to get last Document ID in Solr I get 99999999 and last Id = 246458031

I try this How to get last indexed record in Solr?

and only work if last ID <= 99999999

2.and when I use timestamp many record have the same date [timestamp": "2017-08-14T08:51:21.185Z]

So I need way to get Last Id from Solr

EDIT

I found Solution [q=*:*&start=0&rows=1&sort=timestamp+desc,id+desc] I Sorted by time & ID and it's working So Good

回答1:

I found Solution

[q=:&start=0&rows=1&sort=timestamp+desc,id+desc] I Sorted by time & ID and it's working So Good

回答2:

You can sort by _version_ field in descending order. AFAIK, _version_ field is a epoch timestamp (of when the document was indexed into Solr) in milliseconds multiplied by 2^20.

Relevant code snipped from Solr codebase:

public long getNewClock() {
  synchronized (clockSync) {
    long time = System.currentTimeMillis();
    long result = time << 20;
    if (result <= vclock) {
      result = vclock + 1;
    }
    vclock = result;
    return vclock;
  }
}

来源：https://stackoverflow.com/questions/45671144/how-to-get-last-document-insert-in-solr