[GitHub] [ignite] AMashenkov commented on a change in pull request #9246: Ignite 12749 Fixed unsupported operation exception on node stop if collisionspi not null

[GitBox <gi...@apache.org>]

AMashenkov commented on a change in pull request #9246:
URL: https://github.com/apache/ignite/pull/9246#discussion_r667934747



##########
File path: modules/core/src/main/java/org/jsr166/ConcurrentLinkedHashMap.java
##########
@@ -1536,10 +1553,60 @@ public V replacex(K key, V oldVal, V newVal) {
     }
 
     /**
-     * Removes all of the mappings from this map.
+     * Removes all of the mappings from this map. Performs recursive table locking.
      */
     @Override public void clear() {
-        throw new UnsupportedOperationException();
+        int len = segments.length;
+
+        clear(0, len);
+    }
+
+    /**
+     * Recursively locks each segment in consistent order. When all segments are locked method clears them
+     * all and releases locks in reverse order.
+     * @param segIndex segIndex of a segment to lock
+     * @param len length of segments array
+     */
+    private void clear(int segIndex, int len) {
+

Review comment:
       ```suggestion
       private void clear(int segIndex, int len) {
   ```




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