What are all possible concurrent Lucene requests?
Created May 14, 2012
Otis Gospodnetic
*Cannot delete when the IndexWriter object is open
IndexWriter.docCount() does not seem to shrink with deletions
Note: the above matrix assumes that a single instance of IndexReader and IndexWriter are used for concurrent operations.
| query | read doc | write | delete | optimize | merge | ||
|---|---|---|---|---|---|---|---|
| query | Y | Y | Y | Y | Y | Y | |
| read doc | Y | Y | Y | Y | Y | Y | |
| write | Y | Y | Y | N | Y | Y | |
| delete | N | Y | N | Y | N | N | * |
| optimize | Y | Y | Y | N | Y | Y | |
| merge | Y | Y | Y | N | Y | Y | |
| * |
IndexWriter.docCount() does not seem to shrink with deletions
Note: the above matrix assumes that a single instance of IndexReader and IndexWriter are used for concurrent operations.
The creator of this matrix is Mark Harwood. c.f. original matrix