SOLR-7971: Reduce memory allocated by JavaBinCodec to encode large strings by an amount equal to the string.length()

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1697726 13f79535-47bb-0310-9956-ffa450edef68

solr/CHANGES.txt

@@ -168,6 +168,10 @@ Optimizations
   are more efficient especially when cluster has a mix of collections in stateFormat=1
   and stateFormat=2. (Scott Blum, shalin)
 
+* SOLR-7971: Reduce memory allocated by JavaBinCodec to encode large strings by an amount
+  equal to the string.length().
+  (yonik, Steve Rowe, shalin)
+
 Other Changes
 ----------------------
 

solr/solrj/src/java/org/apache/solr/common/util/JavaBinCodec.java

@@ -614,7 +614,7 @@ public class JavaBinCodec {
       return;
     }
     int end = s.length();
-    int maxSize = end * 4;
+    int maxSize = end * 3; // 3 is enough, see SOLR-7971
     if (bytes == null || bytes.length < maxSize) bytes = new byte[maxSize];
     int sz = ByteUtils.UTF16toUTF8(s, 0, end, bytes, 0);