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https://issues.apache.org/jira/browse/PHOENIX-6501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17507216#comment-17507216
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ASF GitHub Bot commented on PHOENIX-6501:
-----------------------------------------
kadirozde commented on a change in pull request #1399:
URL: https://github.com/apache/phoenix/pull/1399#discussion_r827386756
##########
File path:
phoenix-core/src/it/java/org/apache/phoenix/end2end/index/UncoveredGlobalIndexRegionScannerIT.java
##########
@@ -0,0 +1,393 @@
+/*
+ * 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.phoenix.end2end.index;
+
+import static
org.apache.phoenix.end2end.index.GlobalIndexCheckerIT.assertExplainPlan;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+
+import java.sql.Timestamp;
+import java.util.Calendar;
+import java.util.List;
+import java.util.Map;
+import java.util.Random;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.apache.hadoop.hbase.client.Scan;
+import org.apache.hadoop.hbase.coprocessor.ObserverContext;
+import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
+import org.apache.hadoop.hbase.coprocessor.SimpleRegionObserver;
+import org.apache.phoenix.filter.SkipScanFilter;
+import org.apache.phoenix.query.KeyRange;
+import org.apache.phoenix.thirdparty.com.google.common.collect.Maps;
+import org.apache.phoenix.end2end.NeedsOwnMiniClusterTest;
+import org.apache.phoenix.query.BaseTest;
+import org.apache.phoenix.query.QueryServices;
+import org.apache.phoenix.util.*;
Review comment:
This must be due to my IntelliJ config. I will fix it.
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> Use batching when joining data table rows with uncovered global index rows
> --------------------------------------------------------------------------
>
> Key: PHOENIX-6501
> URL: https://issues.apache.org/jira/browse/PHOENIX-6501
> Project: Phoenix
> Issue Type: Improvement
> Affects Versions: 5.1.2
> Reporter: Kadir Ozdemir
> Assignee: Lars Hofhansl
> Priority: Major
> Attachments: PHOENIX-6501.master.001.patch
>
>
> PHOENIX-6458 extends the existing uncovered local index support for global
> indexes. The current solution uses HBase get operations to join data table
> rows with uncovered index rows on the server side. Doing a separate RPC call
> for every data table row can be expensive. Instead, we can buffer lots of
> data row keys in memory, use a skip scan filter and even multiple threads to
> issue a separate scan for each data table region in parallel. This will
> reduce the cost of join and also improve the performance.
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