Update run.properties with commitSeconds=0 and explaining comment

Author: patrick-austin

src/main/config/run.properties.example

@@ -2,7 +2,8 @@
 # are marked with '!'
 
 directory      = ${HOME}/data/search
-commitSeconds  = 5
+# A value of 0 will disable automatic commits and rely on icat.server to explicitly call commit after creating new documents
+commitSeconds  = 0
 # Lucene limits the max number of documents in an index to Integer.MAX_VALUE - 128
 maxShardSize   = 2147483519
 ip             = 127.0.0.1/32

src/main/resources/run.properties

@@ -2,7 +2,8 @@
 # are marked with '!'
 
 directory      = ${HOME}/data/search
-commitSeconds  = 5
+# A value of 0 will disable automatic commits and rely on icat.server to explicitly call commit after creating new documents
+commitSeconds  = 0
 maxShardSize   = 2147483519
 ip             = 127.0.0.1/32
 # A search taking longer than this will be cancelled to avoid blocking other users' searches

src/site/xhtml/installation.xhtml.vm

@@ -54,7 +54,9 @@
 
 		<dt>commitSeconds</dt>
 		<dd>the interval in seconds between committing lucene changes to
-			disk and updating the index.</dd>
+			disk and updating the index. Automatic commits can be disabled by setting to
+			0, in which case icat.server will need to explicitly commit after creating a
+			batch of documents.</dd>
 
 		<dt>maxShardSize</dt>
 		<dd>The maximum number of documents to store in a single index before "sharding"