Remove trimToSize from UndoLog that is always false

h2/src/main/org/h2/command/Command.java

@@ -290,7 +290,7 @@ public abstract class Command implements CommandInterface {
                     if (s.getErrorCode() == ErrorCode.DEADLOCK_1) {
                         session.rollback();
                     } else {
-                        session.rollbackTo(rollback, false);
+                        session.rollbackTo(rollback);
                     }
                 } catch (Throwable nested) {
                     e.addSuppressed(nested);

h2/src/main/org/h2/engine/Session.java

@@ -761,8 +761,8 @@ public class Session extends SessionWithState implements TransactionStore.Rollba
         currentTransactionName = null;
         transactionStart = null;
         boolean needCommit = undoLog != null && undoLog.size() > 0 || transaction != null;
-        if(needCommit) {
-            rollbackTo(null, false);
+        if (needCommit) {
+            rollbackTo(null);
         }
         if (!locks.isEmpty() || needCommit) {
             database.commit(this);
@@ -779,15 +779,14 @@ public class Session extends SessionWithState implements TransactionStore.Rollba
      * Partially roll back the current transaction.
      *
      * @param savepoint the savepoint to which should be rolled back
-     * @param trimToSize if the list should be trimmed
      */
-    public void rollbackTo(Savepoint savepoint, boolean trimToSize) {
+    public void rollbackTo(Savepoint savepoint) {
         int index = savepoint == null ? 0 : savepoint.logIndex;
         if (undoLog != null) {
             while (undoLog.size() > index) {
                 UndoLogRecord entry = undoLog.getLast();
                 entry.undo(this);
-                undoLog.removeLast(trimToSize);
+                undoLog.removeLast();
             }
         }
         if (transaction != null) {
@@ -1112,7 +1111,7 @@ public class Session extends SessionWithState implements TransactionStore.Rollba
         if (savepoint == null) {
             throw DbException.get(ErrorCode.SAVEPOINT_IS_INVALID_1, name);
         }
-        rollbackTo(savepoint, false);
+        rollbackTo(savepoint);
     }
 
     /**

h2/src/main/org/h2/engine/UndoLog.java

@@ -120,18 +120,13 @@ public class UndoLog {
 
     /**
      * Remove the last record from the list of operations.
-     *
-     * @param trimToSize if the undo array should shrink to conserve memory
      */
-    void removeLast(boolean trimToSize) {
+    void removeLast() {
         int i = records.size() - 1;
         UndoLogRecord r = records.remove(i);
         if (!r.isStored()) {
             memoryUndo--;
         }
-        if (trimToSize && i > 1024 && (i & 1023) == 0) {
-            records.trimToSize();
-        }
     }
 
     /**

h2/src/main/org/h2/table/Table.java

@@ -515,7 +515,7 @@ public abstract class Table extends SchemaObjectBase {
             } catch (DbException e) {
                 if (e.getErrorCode() == ErrorCode.CONCURRENT_UPDATE_1
                         || e.getErrorCode() == ErrorCode.ROW_NOT_FOUND_WHEN_DELETING_1) {
-                    session.rollbackTo(rollback, false);
+                    session.rollbackTo(rollback);
                     session.startStatementWithinTransaction();
                     rollback = session.setSavepoint();
                 }
@@ -534,7 +534,7 @@ public abstract class Table extends SchemaObjectBase {
                 addRow(session, n);
             } catch (DbException e) {
                 if (e.getErrorCode() == ErrorCode.CONCURRENT_UPDATE_1) {
-                    session.rollbackTo(rollback, false);
+                    session.rollbackTo(rollback);
                     session.startStatementWithinTransaction();
                     rollback = session.setSavepoint();
                 }