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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 09:38:07 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_r336922320
 
 

 ##########
 File path: modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/delta/PurgeRecord.java
 ##########
 @@ -0,0 +1,103 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.internal.pagemem.wal.record.delta;
+
+import org.apache.ignite.IgniteCheckedException;
+import org.apache.ignite.internal.pagemem.PageMemory;
+import org.apache.ignite.internal.processors.cache.persistence.tree.io.BPlusIO;
+import org.apache.ignite.internal.processors.cache.persistence.tree.io.PageIO;
+import org.apache.ignite.internal.util.typedef.internal.S;
+
+/**
+ * Removal of multiple items (designated by their 0-based indexes) in an index leaf page.
+ */
+public class PurgeRecord extends PageDeltaRecord {
+    /** Indexes of items to remove from the page. */
+    private int[] items;
+
+    /** Number of used elements in items array. */
+    private int itemsCnt;
+
+    /** Resulting count of items that should remain on the page. */
+    private int cnt;
+
+    /**
+     * @param grpId Cache group ID.
+     * @param pageId Page ID.
+     * @param items Indexes of items to remove on the page.
+     * @param itemsCnt Number of used elements in {@code items} array.
+     * @param cnt Resulting count of items that should remain on the page.
 
 Review comment:
   typo: Let's remove `Resulting` word -> "Count of items that should remain on the page."

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