hits.length() changes during delete process.

[David Townsend]

I have a delete script

IndexSearcher searcher = new IndexSearcher(reader);

Hits hits = searcher.search(query);
log.info("there are " + hits.length() + " hits");

for (int i = 0; i < hits.length(); i++) {
  log.info(hits.length() + " " + i + " " + hits.id(i));
  reader.delete(hits.id(i));
}

which iterates through the results of a search and deletes the returns.  I keep 
getting an ArrayIndexOutOfBoundsException.  I've found the reason is that 
hits.length() actually changes during the iteration in large regular steps i.e 

The hits length is initially 10003

after 100 deletions hits.length() changes to  9903
after 200 deletions hits.length() changes to 9803

then changes after 
200 deletions
400
800
1600
3200

So the short question is, should the hits object be changing and what is the 
best way to delete all the results of a search (it's a range query so I can't 
use delete(Term term)? 

cheers.

David

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