[GitHub] [phoenix] virajjasani commented on a change in pull request #966: PHOENIX-6191: Creating a view which has its own new columns should also do checkAndPut checks on SYSTEM.MUTEX

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

virajjasani commented on a change in pull request #966:
URL: https://github.com/apache/phoenix/pull/966#discussion_r523713916



##########
File path: phoenix-core/src/it/java/org/apache/phoenix/end2end/ViewConcurrencyAndFailureIT.java
##########
@@ -0,0 +1,793 @@
+/*
+ * 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;
+
+import static org.apache.phoenix.coprocessor.PhoenixMetaDataCoprocessorHost
+        .PHOENIX_META_DATA_COPROCESSOR_CONF_KEY;
+import static org.apache.phoenix.exception.SQLExceptionCode.CANNOT_MUTATE_TABLE;
+import static org.apache.phoenix.util.TestUtil.TEST_PROPERTIES;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import java.io.IOException;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+import java.util.Set;
+import java.util.concurrent.Callable;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+import java.util.concurrent.ThreadFactory;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.hadoop.hbase.DoNotRetryIOException;
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.coprocessor.ObserverContext;
+import org.apache.phoenix.coprocessor.BaseMetaDataEndpointObserver;
+import org.apache.phoenix.coprocessor.PhoenixMetaDataCoprocessorHost
+        .PhoenixMetaDataControllerEnvironment;
+import org.apache.phoenix.exception.PhoenixIOException;
+import org.apache.phoenix.exception.SQLExceptionCode;
+import org.apache.phoenix.query.QueryServices;
+import org.apache.phoenix.schema.ConcurrentTableMutationException;
+import org.apache.phoenix.schema.PTable;
+import org.apache.phoenix.schema.PTableType;
+import org.apache.phoenix.schema.TableNotFoundException;
+import org.apache.phoenix.util.PhoenixRuntime;
+import org.apache.phoenix.util.PropertiesUtil;
+import org.apache.phoenix.util.ReadOnlyProps;
+import org.apache.phoenix.util.SchemaUtil;
+import org.apache.phoenix.util.TestUtil;
+import org.junit.After;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameters;
+
+import com.google.common.collect.Maps;
+
+/**
+ * Tests for views dealing with other ongoing concurrent operations and
+ * failure scenarios
+ */
+@RunWith(Parameterized.class)
+public class ViewConcurrencyAndFailureIT extends SplitSystemCatalogIT {
+
+    protected String tableDDLOptions;
+    protected String transactionProvider;
+    protected boolean columnEncoded;
+
+    private static final String FAILED_VIEWNAME = SchemaUtil.getTableName(
+            SCHEMA2, "FAILED_VIEW_" + generateUniqueName());
+    private static final String SLOW_VIEWNAME_PREFIX =
+            SchemaUtil.getTableName(SCHEMA2, "SLOW_VIEW");
+
+    private static volatile CountDownLatch latch1 = null;
+    private static volatile CountDownLatch latch2 = null;
+    private static volatile boolean throwExceptionInChildLinkPreHook = false;
+    private static volatile boolean slowDownAddingChildLink = false;
+
+    public ViewConcurrencyAndFailureIT(String transactionProvider,
+            boolean columnEncoded) {
+        StringBuilder optionBuilder = new StringBuilder();
+        this.transactionProvider = transactionProvider;
+        this.columnEncoded = columnEncoded;
+        if (transactionProvider != null) {
+            optionBuilder.append(" TRANSACTION_PROVIDER='")
+                    .append(transactionProvider)
+                    .append("'");
+        }
+        if (!columnEncoded) {
+            if (optionBuilder.length()!=0)
+                optionBuilder.append(",");
+            optionBuilder.append("COLUMN_ENCODED_BYTES=0");
+        }
+        this.tableDDLOptions = optionBuilder.toString();
+    }
+
+    // name is used by failsafe as file name in reports
+    @Parameters(name="ViewIT_transactionProvider={0}, columnEncoded={1}")
+    public static synchronized Collection<Object[]> data() {
+        return TestUtil.filterTxParamData(Arrays.asList(new Object[][] {
+                { "TEPHRA", false }, { "TEPHRA", true },
+                { "OMID", false },
+                { null, false }, { null, true }}),0);
+    }
+
+    @BeforeClass
+    public static synchronized void doSetup() throws Exception {
+        NUM_SLAVES_BASE = 6;
+        boolean splitSystemCatalog = (driver == null);
+        Map<String, String> serverProps = Maps.newHashMapWithExpectedSize(1);
+        serverProps.put(QueryServices.PHOENIX_ACLS_ENABLED, "true");
+        serverProps.put(PHOENIX_META_DATA_COPROCESSOR_CONF_KEY,
+                TestMetaDataRegionObserver.class.getName());
+        serverProps.put("hbase.coprocessor.abortonerror", "false");
+        setUpTestDriver(new ReadOnlyProps(serverProps.entrySet().iterator()),
+                ReadOnlyProps.EMPTY_PROPS);
+        // Split SYSTEM.CATALOG once after the mini-cluster is started
+        if (splitSystemCatalog) {
+            // splitSystemCatalog is incompatible with the balancer chore
+            getUtility().getHBaseCluster().getMaster().balanceSwitch(false);
+            splitSystemCatalog();
+        }
+    }
+
+    @After
+    public void cleanup() {
+        latch1 = null;
+        latch2 = null;
+        throwExceptionInChildLinkPreHook = false;
+        slowDownAddingChildLink = false;
+    }
+
+    @Test
+    public void testChildViewCreationFails() throws Exception {
+        try (Connection conn = DriverManager.getConnection(getUrl());
+                Statement stmt = conn.createStatement()) {
+
+            String fullTableName = SchemaUtil.getTableName(SCHEMA1,
+                    generateUniqueName());
+            String failingViewName = FAILED_VIEWNAME;
+            String succeedingViewName = SchemaUtil.getTableName(SCHEMA3,
+                    generateUniqueName());
+
+            String createTableDdl = "CREATE TABLE " + fullTableName
+                    + "  (k INTEGER NOT NULL PRIMARY KEY, v1 DATE)"
+                    + tableDDLOptions;
+            stmt.execute(createTableDdl);
+
+            String createViewDdl = "CREATE VIEW " + failingViewName
+                    + " (v2 VARCHAR) AS SELECT * FROM "
+                    + fullTableName + " WHERE k > 5";
+            try {
+                stmt.execute(createViewDdl);
+                fail();
+            } catch (PhoenixIOException ignored) {
+            }
+            createViewDdl = "CREATE VIEW " + succeedingViewName
+                    + "(v2 VARCHAR) AS SELECT * FROM " + fullTableName
+                    + " WHERE k > 10";
+            stmt.execute(createViewDdl);
+
+            // the first child view should not exist
+            try {
+                PhoenixRuntime.getTableNoCache(conn, failingViewName);
+                fail();
+            } catch (TableNotFoundException ignored) {
+            }
+
+            // we should be able to load the table
+            PhoenixRuntime.getTableNoCache(conn, fullTableName);
+            // we should be able to load the second view
+            PhoenixRuntime.getTableNoCache(conn, succeedingViewName);
+        }
+    }
+
+    @Test
+    public void testConcurrentViewCreationAndTableDrop() throws Exception {
+        try (Connection conn = DriverManager.getConnection(getUrl());
+                Statement stmt = conn.createStatement()) {
+            String fullTableName = SchemaUtil.getTableName(SCHEMA1,
+                    generateUniqueName());
+            String fullViewName1 = SLOW_VIEWNAME_PREFIX + "_"
+                    + generateUniqueName();
+            latch1 = new CountDownLatch(1);
+            latch2 = new CountDownLatch(1);
+            String tableDdl = "CREATE TABLE " + fullTableName +
+                    "  (k INTEGER NOT NULL PRIMARY KEY, v1 INTEGER, v2 INTEGER)"
+                    + tableDDLOptions;
+            stmt.execute(tableDdl);
+
+            ExecutorService executorService = Executors.newFixedThreadPool(
+                    1, new ThreadFactory() {

Review comment:
       nit: maybe use `newSingleThreadExecutor()` instead? (for all similar places in this file)




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