Hi,     I'm new to solr and my question might seems to be dumb. Please bear 
with me.
    In short, if a file (after indexed by solr) changed its name, could I only 
update resourcename and keep all other information the same in the index? Or do 
I have to delete it and then re-index the file? 
   Below are the detailed version of my question:    My problem: I have many 
(tens of thousands) files that are sort of messed up with file name/location:   
(1) wrong file type in file name: for example,  some files are pdf file but are 
named as .txt.  (2) wrong directory of file: a file named 001.pdf should be 
under a specific folder, such as: abc/001.pdf. The "abc" could be found in 
001.pdf. But now, this file might be placed under xyz/001.pdf. So, I would like 
to relocate the file from xyz/001.pdf to abc/001.pdf.
   I need to correct those errors and also being able to search the content of 
those documents.
   How I was trying to solve the issue using solr:(1) index all files(2) from 
content_type and/or application_name, I could know the correct file type (pdf, 
text etc.) and compare it with the resourcename. Found out those files that I 
need to update.(3) query all "abc", "xyz" etc. and find out those files that 
need to be relocated.(4) rename/relocate files from step (2) and (3)(5) update 
solr index.
    My question:I tried to use the solr UI to update resourcename. I was able 
to do so but the problem is the id now has a new version that only contains 
resourcename.
Here is how I made the update:
In the "Documents" page: Request-Handler: /updateDocument Type: 
JSON:Document(s):  {"id":"/testproject/abc/001.txt",  
"resourcename":{"set":["/testproject/abc/001.pdf"]}}

After submission, and query/browse the file, the only thing left is 
resourcename. All other information, such as content_type, created etc. are 
gone.       If I could not update the " resourcename" (and keep all other 
information), it means that I either run a script to delete the document that I 
renamed/relocated and re-index them, meaning that myscript will do: find the 
file, rename/relocate, delete the original index, re-index/post the new file. 
Is this the best approach?
Thanks!Nan      

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