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From GitBox <...@apache.org>
Subject [GitHub] [ignite] nizhikov commented on a change in pull request #6982: IGNITE-12295: Index partition purge for file-based rebalancing
Date Mon, 21 Oct 2019 14:44:27 GMT
nizhikov commented on a change in pull request #6982: IGNITE-12295: Index partition purge for
file-based rebalancing
URL: https://github.com/apache/ignite/pull/6982#discussion_r337059220
 
 

 ##########
 File path: modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/tree/BPlusTree.java
 ##########
 @@ -1826,6 +1827,23 @@ public final boolean removex(L row) throws IgniteCheckedException
{
         return res != null ? res : false;
     }
 
+    /**
+     * Returns a cursor that removes rows when being iterated.
+     * Uses a specified closure as a predicate to filter rows.
+     *
+     * @param clo TreeRowClosure Closure to filter rows.
+     * @throws IgniteCheckedException If failed.
+     */
+    public GridCursor<Void> purge(TreeRowClosure<L, T> clo) throws IgniteCheckedException
{
 
 Review comment:
   I don't get why we should share "cursor that removes rows when being iterated"?
   Can we implement regular `Iterator` with support of `remove` operation?

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