Document enhancements in indexing in 1.6
Add whats new section
* [Indexing](#indexing)
* [Overview](#overview)
+ * [New in 1.6](#new-1.6)
* [Indexing Flow](#indexing-flow)
* [Index Definitions](#index-defnitions)
* [oak:index node ](#oak-index-nodes)
@@ -53,6 +54,11 @@ Oak has following in built `IndexEditor`s
3. LuceneIndexEditor
4. SolrIndexEditor
+### <a name="new-1.6"></a> New in 1.6
+
+* [Multiple Async indexers setup via OSGi config](#async-index-setup)
+* [Isolating Corrupt Indexes](#corrupt-index-handling)
+
## <a name="indexing-flow"></a> Indexing Flow
`IndexEditor` are invoked as part of commit or as part of asynchronous diff process. For both cases at some stage
@@ -196,7 +202,8 @@ Async indexers can be configure via OSGi config for `org.apache.jackrabbit.oak.p
![Async Indexing Config](async-index-config.png)
-Different lanes can be configured by adding more rows of _Async Indexer Configs_
+Different lanes can be configured by adding more rows of _Async Indexer Configs_. Prior to 1.6 the indexers were
+created programatically while constructing Oak.
#### <a name="async-index-mbean"></a> Async Indexing MBean
