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https://issues.apache.org/jira/browse/PHOENIX-6032?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17223361#comment-17223361
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ASF GitHub Bot commented on PHOENIX-6032:
-----------------------------------------
yanxinyi commented on a change in pull request #949:
URL: https://github.com/apache/phoenix/pull/949#discussion_r514740510
##########
File path:
phoenix-core/src/it/java/org/apache/phoenix/end2end/SystemCatalogRollbackEnabledIT.java
##########
@@ -0,0 +1,271 @@
+/*
+ * 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.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.Map;
+import java.util.Properties;
+
+import org.apache.hadoop.hbase.DoNotRetryIOException;
+import org.apache.hadoop.hbase.HBaseTestingUtility;
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.client.RegionLocator;
+import org.apache.phoenix.exception.SQLExceptionCode;
+import org.apache.phoenix.query.BaseTest;
+import org.apache.phoenix.query.QueryServices;
+import org.apache.phoenix.schema.ColumnNotFoundException;
+import org.apache.phoenix.util.PhoenixRuntime;
+import org.apache.phoenix.util.ReadOnlyProps;
+import org.apache.phoenix.util.SchemaUtil;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+
+import com.google.common.collect.Maps;
+
+/**
+ * Tests various scenarios when {@link
QueryServices#ALLOW_SPLITTABLE_SYSTEM_CATALOG_ROLLBACK}
+ * is set to true and SYSTEM.CATALOG should not be allowed to split. Note that
this config must
+ * be set on both the client and server
+ */
+@Category(NeedsOwnMiniClusterTest.class)
+public class SystemCatalogRollbackEnabledIT extends BaseTest {
+
+ @BeforeClass
+ public static synchronized void doSetup() throws Exception {
+ Map<String, String> serverProps =
Maps.newHashMapWithExpectedSize(2);
+ Map<String, String> clientProps =
Maps.newHashMapWithExpectedSize(1);
+ serverProps.put(QueryServices.SYSTEM_CATALOG_SPLITTABLE,
"false");
+
serverProps.put(QueryServices.ALLOW_SPLITTABLE_SYSTEM_CATALOG_ROLLBACK, "true");
+
clientProps.put(QueryServices.ALLOW_SPLITTABLE_SYSTEM_CATALOG_ROLLBACK, "true");
+ setUpTestDriver(new
ReadOnlyProps(serverProps.entrySet().iterator()),
+ new ReadOnlyProps(clientProps.entrySet().iterator()));
+ }
+
+ private void createTable(String tableName) throws Exception {
+ try (Connection conn = DriverManager.getConnection(getUrl());
+ Statement stmt = conn.createStatement();) {
+ stmt.execute("DROP TABLE IF EXISTS " + tableName);
+ stmt.execute("CREATE TABLE " + tableName + " (TENANT_ID VARCHAR
NOT NULL, " +
+ "PK1 VARCHAR NOT NULL, V1 VARCHAR CONSTRAINT PK " +
+ "PRIMARY KEY(TENANT_ID, PK1)) MULTI_TENANT=true");
+ try (Connection tenant1Conn = getTenantConnection("tenant1")) {
+ String view1DDL = "CREATE VIEW " + tableName + "_view1 AS
SELECT * FROM " +
+ tableName;
+ tenant1Conn.createStatement().execute(view1DDL);
+ }
+ try (Connection tenant1Conn = getTenantConnection("tenant2")) {
+ String view1DDL = "CREATE VIEW " + tableName + "_view2 AS
SELECT * FROM " +
+ tableName;
+ tenant1Conn.createStatement().execute(view1DDL);
+ }
+ conn.commit();
+ }
+ }
+
+ private Connection getTenantConnection(String tenantId) throws
SQLException {
+ Properties tenantProps = new Properties();
+ tenantProps.setProperty(PhoenixRuntime.TENANT_ID_ATTRIB, tenantId);
+ return DriverManager.getConnection(getUrl(), tenantProps);
+ }
+
+
+ /**
+ * Make sure that SYSTEM.CATALOG cannot be split if
+ * {@link QueryServices#SYSTEM_CATALOG_SPLITTABLE} is false
+ */
+ @Test
+ public void testSystemTableDoesNotSplit() throws Exception {
+ HBaseTestingUtility testUtil = getUtility();
+ for (int i=0; i<10; i++) {
+ createTable("schema"+i+".table_"+i);
+ }
+ TableName systemCatalog = TableName.valueOf("SYSTEM.CATALOG");
Review comment:
nit: using PhoenixDatabaseMetaData.SYSTEM_CATALOG_NAME
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> When phoenix.allow.system.catalog.rollback=true, a view still sees data from
> a column that was dropped
> ------------------------------------------------------------------------------------------------------
>
> Key: PHOENIX-6032
> URL: https://issues.apache.org/jira/browse/PHOENIX-6032
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 5.0.0, 4.15.0
> Reporter: Chinmay Kulkarni
> Assignee: Chinmay Kulkarni
> Priority: Blocker
> Fix For: 5.1.0, 4.16.0
>
> Attachments: PHOENIX-6032.master.v1.patch
>
>
> Start a 4.x server with phoenix.allow.system.catalog.rollback=true,
> phoenix.system.catalog.splittable=false. Connect to it from a 4.x client with
> phoenix.allow.system.catalog.rollback=true. Run the following from the 4.x
> client:
> {code:sql}
> CREATE TABLE IF NOT EXISTS T (A INTEGER PRIMARY KEY, B INTEGER, C VARCHAR, D
> INTEGER);
> CREATE VIEW IF NOT EXISTS V (VA INTEGER, VB INTEGER) AS SELECT * FROM T WHERE
> B=200;
> UPSERT INTO V(A,B,C,D,VA,VB) VALUES (2, 200, 'def', -20, 91, 101);
> SELECT * FROM T;
> +----+------+------+------+
> | A | B | C | D |
> +----+------+------+------+
> | 2 | 200 | def | -20 |
> +----+------+------+------+
> SELECT * FROM V;
> +----+------+------+------+-----+------+
> | A | B | C | D | VA | VB |
> +----+------+------+------+-----+------+
> | 2 | 200 | def | -20 | 91 | 101 |
> +----+------+------+------+-----+------+
> -- as expected
> -- drop a parent column from the view
> ALTER VIEW V DROP COLUMN C;
> SELECT * FROM V;
> +------+----+------+------+-----+------+
> | C | A | B | D | VA | VB |
> +------+----+------+------+-----+------+
> | def | 2 | 200 | -20 | 91 | 101 |
> +------+----+------+------+-----+------+
> -- Column C can still be seen and its ordering is changed for some reason. If
> you run the drop column again, it is actually dropped
> ALTER VIEW V DROP COLUMN C;
> SELECT * FROM V;
> +----+------+------+-----+------+
> | A | B | D | VA | VB |
> +----+------+------+-----+------+
> | 2 | 200 | -20 | 91 | 101 |
> +----+------+------+-----+------+
> -- Gets dropped when drop column is run a second time.
> {code}
> When splittable SYSTEM.CATALOG rollback is enabled, we store the parent's
> column metadata along with the view as well. After the first drop column
> command, metadata for column 'C' of the parent is removed from the view's
> metadata rows however it is not marked diverged, nor is an EXCLUDED_COLUMN
> entry made for that column in the view metadata rows.
> Because of this, when resolving the view we potentially keep combining the
> parent table columns and still get column 'C'. When the second drop column
> command is issued is when we actually add an EXCLUDED_COLUMN linking row for
> 'C' in the view metadata.
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