Index: CHANGES.txt
===================================================================
--- CHANGES.txt	(revision 1028931)
+++ CHANGES.txt	(working copy)
@@ -194,6 +194,9 @@
 * LUCENE-2360: Small speedup to recycling of reused per-doc RAM in
   IndexWriter (Robert Muir, Mike McCandless)
 
+* LUCENE-2556: Improve memory usage after cloning TermAttribute.
+  (Adriano Crestani via Uwe Schindler)
+
 ======================= Release 3.0.1 2010-02-26 =======================
 
 Changes in backwards compatibility policy
Index: src/java/org/apache/lucene/analysis/Token.java
===================================================================
--- src/java/org/apache/lucene/analysis/Token.java	(revision 1028931)
+++ src/java/org/apache/lucene/analysis/Token.java	(working copy)
@@ -524,7 +524,8 @@
     Token t = (Token)super.clone();
     // Do a deep clone
     if (termBuffer != null) {
-      t.termBuffer = (char[]) termBuffer.clone();
+      t.termBuffer = new char[this.termLength];
+      System.arraycopy(this.termBuffer, 0, t.termBuffer, 0, this.termLength);
     }
     if (payload != null) {
       t.payload = (Payload) payload.clone();
Index: src/java/org/apache/lucene/analysis/tokenattributes/TermAttributeImpl.java
===================================================================
--- src/java/org/apache/lucene/analysis/tokenattributes/TermAttributeImpl.java	(revision 1028931)
+++ src/java/org/apache/lucene/analysis/tokenattributes/TermAttributeImpl.java	(working copy)
@@ -182,7 +182,8 @@
     TermAttributeImpl t = (TermAttributeImpl)super.clone();
     // Do a deep clone
     if (termBuffer != null) {
-      t.termBuffer = (char[]) termBuffer.clone();
+      t.termBuffer = new char[this.termLength];
+      System.arraycopy(this.termBuffer, 0, t.termBuffer, 0, this.termLength);
     }
     return t;
   }

Property changes on: src\java\org\apache\lucene\analysis\tokenattributes\TermAttributeImpl.java
___________________________________________________________________
Added: svn:mergeinfo
   Merged /lucene/java/trunk/src/java/org/apache/lucene/analysis/tokenattributes/TermAttributeImpl.java:r881213,881315,881466,881819,882374,882672,882807,882888,882977,883074-883075,883554,884870,886257,886911,887347,887532,887602,887670,888247,889431-889432,889579,889866,890439,890967,890988,891189,891205,891209,891363,891377,893093,894348,897672,899627,900196,903368,908477,908975,909360,909398,910034,910078,912407,915399,916543,919060,919869,920270
   Merged /lucene/dev/branches/branch_3x/lucene/src/java/org/apache/lucene/analysis/tokenattributes/TermAttributeImpl.java:r941394,946651,948430,957490,957920,984210,988629,990286,999226,999847
   Merged /lucene/java/branches/lucene_2_4/src/java/org/apache/lucene/analysis/tokenattributes/TermAttributeImpl.java:r748824
   Merged /lucene/dev/trunk/lucene/src/java/org/apache/lucene/analysis/tokenattributes/CharTermAttributeImpl.java:r1024408
   Merged /lucene/java/branches/lucene_2_9/src/java/org/apache/lucene/analysis/tokenattributes/TermAttributeImpl.java:r817269-818600,825998,829134,829881,831036,896850,909334,940987,948516,1028833,1028850
   Merged /lucene/dev/trunk/lucene/src/java/org/apache/lucene/analysis/tokenattributes/TermAttributeImpl.java:r929738,932398,935522,938989,939611,939649,940730,945420,946599,948082,948429,949288,949976,949997,950458,950613,951521,953407,957707,963372,963781,965103,965299,984187,989785,990281,994979,999223,999842
   Merged /lucene/java/branches/lucene_2_9_back_compat_tests/src/java/org/apache/lucene/analysis/tokenattributes/TermAttributeImpl.java:r818601-821336