From 047a08747102685e7212981f7cd446bd5c9f5dfa Mon Sep 17 00:00:00 2001
From: Craig Macdonald <craig.macdonald@glasgow.ac.uk>
Date: Wed, 8 Jan 2025 12:17:16 +0000
Subject: [PATCH] less synchronization

---
 .../structures/concurrent/ConcurrentDocumentIndex.java       | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/modules/concurrent/src/main/java/org/terrier/structures/concurrent/ConcurrentDocumentIndex.java b/modules/concurrent/src/main/java/org/terrier/structures/concurrent/ConcurrentDocumentIndex.java
index b4511c09..0f81dc57 100644
--- a/modules/concurrent/src/main/java/org/terrier/structures/concurrent/ConcurrentDocumentIndex.java
+++ b/modules/concurrent/src/main/java/org/terrier/structures/concurrent/ConcurrentDocumentIndex.java
@@ -47,9 +47,8 @@ public DocumentIndexEntry getDocumentEntry(int docid) throws IOException {
 	}
 
 	public int getDocumentLength(int docid) throws IOException {
-		synchronized (parent) {
-			return parent.getDocumentLength(docid);
-		}		
+		// we dont synchronize on getDocumentLength() - we assume this is always in memory and reentrant
+		return parent.getDocumentLength(docid);	
 	}
 
 	public int getNumberOfDocuments() {