Chetan Mehrotra created OAK-6726:
------------------------------------
Summary: Use addDocument instead of updateDocument while
reindexing with Lucene
Key: OAK-6726
URL: https://issues.apache.org/jira/browse/OAK-6726
Project: Jackrabbit Oak
Issue Type: Improvement
Components: lucene
Reporter: Chetan Mehrotra
Assignee: Chetan Mehrotra
Priority: Minor
Fix For: 1.8
Currently the DefaultIndexWriter uses
[updateDocument|https://lucene.apache.org/core/4_7_1/core/org/apache/lucene/index/IndexWriter.html#updateDocument(org.apache.lucene.index.Term,
java.lang.Iterable)] while adding/updating document in index. This is fine for
incremental indexing where we cannot be sure if index already has that entry.
This call first does a search for existing document matching the term and then
deletes and add the new document
However for reindex case where we start from empty index we can use
[addDocument|https://lucene.apache.org/core/4_7_1/core/org/apache/lucene/index/IndexWriter.html#addDocument(java.lang.Iterable)].
This avoids the extra work for search
In test where index had ~70M entries switch to addDocument resulted in 10 min
reduction in reindexing timings
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
