dsmiley commented on a change in pull request #455: SOLR-12638
URL: https://github.com/apache/lucene-solr/pull/455#discussion_r270084153
 
 

 ##########
 File path: 
solr/core/src/java/org/apache/solr/update/processor/DistributedUpdateProcessor.java
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 @@ -1032,6 +1151,24 @@ protected void assertNotFinished() {
     finished = true;
   }
 
+  /**
+   *
+   * @return whether this update changes a value of a block
+   */
+  public static boolean shouldRefreshUlogCaches(AddUpdateCommand cmd) {
 
 Review comment:
   Can we make this logic more efficient by adding a field to AddUpdateCommand 
that declares (a) is this update an atomic update, and furthermore, did it 
involve nested documents?  Perhaps two separate `Boolean`s, null meaning not 
yet calculated.  By this juncture in the code I think we've already determined 
these things and I'd like to avoid potential overhead per document going into 
Solr.  Lambda's can add up.
   
   typo "update.q" => "update"

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