[GitHub] [phoenix] stoty commented on a diff in pull request #1607: PHOENIX-6910 Scans created during query compilation and execution aga…

["stoty (via GitHub)" <gi...@apache.org>]

stoty commented on code in PR #1607:
URL: https://github.com/apache/phoenix/pull/1607#discussion_r1198495896


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phoenix-core/src/it/java/org/apache/phoenix/end2end/salted/SaltedTableMergeBucketsIT.java:
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@@ -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.phoenix.end2end.salted;
+
+import static org.apache.phoenix.util.TestUtil.TEST_PROPERTIES;
+import static org.junit.Assert.assertTrue;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+import java.sql.Statement;
+import java.util.List;
+import java.util.Properties;
+
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.client.Admin;
+import org.apache.hadoop.hbase.client.RegionInfo;
+import org.apache.phoenix.end2end.ParallelStatsDisabledIT;
+import org.apache.phoenix.end2end.ParallelStatsDisabledTest;
+import org.apache.phoenix.query.QueryServices;
+import org.apache.phoenix.util.PropertiesUtil;
+import org.apache.phoenix.util.TestUtil;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+
+@Category(ParallelStatsDisabledTest.class)
+public class SaltedTableMergeBucketsIT extends ParallelStatsDisabledIT {
+
+    @Test
+    public void testQuery() throws Exception {
+        String tableName = generateUniqueName();
+
+        Properties props = PropertiesUtil.deepCopy(TEST_PROPERTIES);
+        props.put(QueryServices.FORCE_ROW_KEY_ORDER_ATTRIB, Boolean.FALSE.toString());
+        Connection connection = DriverManager.getConnection(getUrl(), props);
+        Statement statement = connection.createStatement();
+        statement.execute("CREATE TABLE " + tableName
+                + " (c1 VARCHAR NOT NULL, c2 VARCHAR NOT NULL, c3 VARCHAR NOT NULL,"
+                + " CONSTRAINT pk PRIMARY KEY(c1,c2,c3)) SALT_BUCKETS=11");
+        statement.execute(
+            " upsert into " + tableName + " values('20191211','HORTONWORKS_WEEKLY_TEST','v3')");
+        statement.execute(
+            " upsert into " + tableName + " values('20191212','HORTONWORKS_WEEKLY_TEST','v3')");
+        statement.execute(
+            " upsert into " + tableName + " values('20191213','HORTONWORKS_WEEKLY_TEST','v3')");
+        statement.execute(
+            " upsert into " + tableName + " values('20191214','HORTONWORKS_WEEKLY_TEST','v3')");
+        statement.execute(
+            " upsert into " + tableName + " values('20191215','HORTONWORKS_WEEKLY_TEST','v3')");
+        statement.execute(
+            " upsert into " + tableName + " values('20191216','HORTONWORKS_WEEKLY_TEST','v3')");
+        statement.execute(
+            " upsert into " + tableName + " values('20191217','HORTONWORKS_WEEKLY_TEST','v3')");
+        statement.execute(
+            " upsert into " + tableName + " values('20191218','HORTONWORKS_WEEKLY_TEST','v3')");
+        statement.execute(
+            " upsert into " + tableName + " values('20191219','HORTONWORKS_WEEKLY_TEST','v3')");
+        statement.execute(
+            " upsert into " + tableName + " values('20191220','HORTONWORKS_WEEKLY_TEST','v3')");
+        statement.execute(
+            " upsert into " + tableName + " values('20191221','HORTONWORKS_WEEKLY_TEST','v3')");
+        statement.execute(
+            " upsert into " + tableName + " values('20191222','HORTONWORKS_WEEKLY_TEST','v3')");
+        statement.execute(
+            " upsert into " + tableName + " values('20191223','HORTONWORKS_WEEKLY_TEST','v3')");
+        statement.execute(
+            " upsert into " + tableName + " values('20191224','HORTONWORKS_WEEKLY_TEST','v3')");
+        statement.execute(
+            " upsert into " + tableName + " values('20191225','HORTONWORKS_WEEKLY_TEST','v3')");
+        connection.commit();
+
+        Admin admin =
+                driver.getConnectionQueryServices(getUrl(), TestUtil.TEST_PROPERTIES).getAdmin();
+        List<RegionInfo> regions = admin.getRegions(TableName.valueOf(tableName));
+        for (int i = 0; i < regions.size() - 1; i+=2) {
+            admin.mergeRegionsAsync(regions.get(i).getEncodedNameAsBytes(),
+                regions.get(i + 1).getEncodedNameAsBytes(), false).get();
+        }
+        ResultSet rs =
+                statement.executeQuery("select c1,c2,c3 from " + tableName
+                        + " where c1='20191211' and c2 like '%HORTONWORKS_WEEKLY_TEST%'");
+        assertTrue(rs.next());
+        rs =
+                statement.executeQuery("select c1,c2,c3 from " + tableName
+                        + " where c1='20191217' and c2 like '%HORTONWORKS_WEEKLY_TEST%'");

Review Comment:
   Random values in tests are fishy.
   We could increase the number of rows, and check that we get back each of them.
   It's a bit tricky, as the nature of hashing makes it hard to make sure that we cover all buckets.
   



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