dbwong commented on a change in pull request #771: URL: https://github.com/apache/phoenix/pull/771#discussion_r417013553
########## File path: phoenix-core/src/it/java/org/apache/phoenix/query/MaxConcurrentConnectionsIT.java ########## @@ -0,0 +1,155 @@ +/* + * 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.query; + +import org.apache.hadoop.hbase.HBaseTestingUtility; +import org.apache.phoenix.end2end.BaseUniqueNamesOwnClusterIT; +import org.apache.phoenix.jdbc.PhoenixDriver; +import org.apache.phoenix.util.DelayedRegionServer; +import org.apache.phoenix.util.PhoenixRuntime; +import org.junit.AfterClass; +import org.junit.BeforeClass; +import org.junit.Test; + +import java.sql.Connection; +import java.sql.DriverManager; +import java.sql.SQLException; +import java.sql.Statement; +import java.util.ArrayList; +import java.util.List; +import java.util.Properties; + +import static org.apache.phoenix.exception.SQLExceptionCode.NEW_CONNECTION_THROTTLED; +import static org.apache.phoenix.exception.SQLExceptionCode.NEW_INTERNAL_CONNECTION_THROTTLED; +import static org.apache.phoenix.monitoring.GlobalClientMetrics.GLOBAL_OPEN_INTERNAL_PHOENIX_CONNECTIONS; +import static org.apache.phoenix.monitoring.GlobalClientMetrics.GLOBAL_OPEN_PHOENIX_CONNECTIONS; +import static org.apache.phoenix.query.QueryServices.CLIENT_CONNECTION_MAX_ALLOWED_CONNECTIONS; +import static org.apache.phoenix.query.QueryServices.INTERNAL_CONNECTION_MAX_ALLOWED_CONNECTIONS; +import static org.apache.phoenix.query.QueryServices.RENEW_LEASE_ENABLED; +import static org.apache.phoenix.util.PhoenixRuntime.JDBC_PROTOCOL_SEPARATOR; +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertTrue; +import static org.junit.Assert.fail; + +public class MaxConcurrentConnectionsIT extends BaseUniqueNamesOwnClusterIT { + + private static HBaseTestingUtility hbaseTestUtil; + + @BeforeClass + public static void setUp() throws Exception { + hbaseTestUtil = new HBaseTestingUtility(); + + hbaseTestUtil.startMiniCluster(1,1,null,null,DelayedRegionServer.class); + // establish url and quorum. Need to use PhoenixDriver and not PhoenixTestDriver + String zkQuorum = "localhost:" + hbaseTestUtil.getZkCluster().getClientPort(); + url = PhoenixRuntime.JDBC_PROTOCOL + JDBC_PROTOCOL_SEPARATOR + zkQuorum + + JDBC_PROTOCOL_SEPARATOR + "uniqueConn=A"; + DriverManager.registerDriver(PhoenixDriver.INSTANCE); + } + + private String getUniqueUrl() { + return url + generateUniqueName(); + } + + //Have to shutdown our special delayed region server + @AfterClass + public static void tearDown() throws Exception { + hbaseTestUtil.shutdownMiniCluster(); + } + + @Test + public void testCannotCreateOverMaximumConnections() throws Exception { + int maxConnections = 3; + Properties props = new Properties(); + props.setProperty(CLIENT_CONNECTION_MAX_ALLOWED_CONNECTIONS,String.valueOf(maxConnections)); + props.setProperty(RENEW_LEASE_ENABLED,String.valueOf(false)); + assertEquals(0,GLOBAL_OPEN_PHOENIX_CONNECTIONS.getMetric().getValue()); + + List<Connection> connections = new ArrayList<>(); + String url = getUniqueUrl(); + + try{ + for(int i = 0; i < maxConnections; i++) { + connections.add(DriverManager.getConnection(url, props)); + } + + try { + DriverManager.getConnection(url, props); + fail(); + } catch(SQLException e) { + assertEquals(NEW_CONNECTION_THROTTLED.getErrorCode(),e.getErrorCode()); + assertEquals(NEW_CONNECTION_THROTTLED.getSQLState(),e.getSQLState()); + } + + } finally { + for(Connection conn : connections) { + conn.close(); + } + } + } + + /** + * This tests the delete path which creates a internal phoenix connection per region + * @throws Exception + */ + @Test + public void testDeleteRuntimeFailureClosesConnections() throws Exception { + String tableName = generateUniqueName(); + + //table with lots of regions + String ddl = "create table " + tableName + " (i integer not null primary key, j integer) SALT_BUCKETS=256 "; + + Properties props = new Properties(); + props.setProperty(CLIENT_CONNECTION_MAX_ALLOWED_CONNECTIONS,String.valueOf(10)); + props.setProperty(INTERNAL_CONNECTION_MAX_ALLOWED_CONNECTIONS,String.valueOf(10)); + + String deleteStmt = "DELETE FROM " + tableName + " WHERE 20 = j"; + + try(Connection conn = DriverManager.getConnection(getUniqueUrl(), props); Statement statement = conn.createStatement()) { + statement.execute(ddl); + } + + assertEquals(0, GLOBAL_OPEN_PHOENIX_CONNECTIONS.getMetric().getValue()); + assertEquals(0, GLOBAL_OPEN_INTERNAL_PHOENIX_CONNECTIONS.getMetric().getValue()); + Connection conn = null; + try { + conn = DriverManager.getConnection(getUniqueUrl(), props); + //Enable delay for the delete + DelayedRegionServer.setDelayEnabled(true); + try (Statement statement = conn.createStatement()) { + statement.execute(deleteStmt); + } + fail(); + } catch (SQLException e) { + assertEquals(NEW_INTERNAL_CONNECTION_THROTTLED.getErrorCode(), e.getErrorCode()); + assertEquals(NEW_INTERNAL_CONNECTION_THROTTLED.getSQLState(), e.getSQLState()); + } finally { + DelayedRegionServer.setDelayEnabled(false); + if (conn != null) { + conn.close(); + } + long connections = GLOBAL_OPEN_PHOENIX_CONNECTIONS.getMetric().getValue(); + assertTrue(String.format("Found %d connections still open.", connections), 0 == connections); Review comment: done ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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