/*
* 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.util.TestUtil.PHOENIX_JDBC_URL;
import static org.apache.phoenix.util.TestUtil.STABLE_NAME;
import static org.apache.phoenix.util.TestUtil.STABLE_SCHEMA_NAME;
import static org.apache.phoenix.util.TestUtil.TEST_PROPERTIES;
import static org.junit.Assert.assertArrayEquals;
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.PreparedStatement;
import java.sql.SQLException;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.HRegionLocation;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.BeforeClass;
import org.junit.Test;
import com.google.common.collect.Maps;
import org.apache.phoenix.compile.StatementContext;
import org.apache.phoenix.iterate.DefaultParallelIteratorRegionSplitter;
import org.apache.phoenix.jdbc.PhoenixConnection;
import org.apache.phoenix.parse.HintNode;
import org.apache.phoenix.parse.SelectStatement;
import org.apache.phoenix.query.ConnectionQueryServices;
import org.apache.phoenix.query.KeyRange;
import org.apache.phoenix.query.QueryServices;
import org.apache.phoenix.query.StatsManager;
import org.apache.phoenix.query.StatsManagerImpl;
import org.apache.phoenix.query.StatsManagerImpl.TimeKeeper;
import org.apache.phoenix.schema.PDataType;
import org.apache.phoenix.schema.TableRef;
import org.apache.phoenix.util.PhoenixRuntime;
import org.apache.phoenix.util.ReadOnlyProps;
import org.apache.phoenix.util.SchemaUtil;
/**
* Tests for {@link DefaultParallelIteratorRegionSplitter}.
*
*
* @since 0.1
*/
public class DefaultParallelIteratorsRegionSplitterTest extends BaseClientMangedTimeTest {
private static final byte[] KMIN = new byte[] {'!'};
private static final byte[] KMIN2 = new byte[] {'.'};
private static final byte[] K1 = new byte[] {'a'};
private static final byte[] K3 = new byte[] {'c'};
private static final byte[] K4 = new byte[] {'d'};
private static final byte[] K5 = new byte[] {'e'};
private static final byte[] K6 = new byte[] {'f'};
private static final byte[] K9 = new byte[] {'i'};
private static final byte[] K11 = new byte[] {'k'};
private static final byte[] K12 = new byte[] {'l'};
private static final byte[] KMAX = new byte[] {'~'};
private static final byte[] KMAX2 = new byte[] {'z'};
@BeforeClass
public static void doSetup() throws Exception {
int targetQueryConcurrency = 3;
int maxQueryConcurrency = 5;
Map<String,String> props = Maps.newHashMapWithExpectedSize(3);
props.put(QueryServices.MAX_QUERY_CONCURRENCY_ATTRIB, Integer.toString(maxQueryConcurrency));
props.put(QueryServices.TARGET_QUERY_CONCURRENCY_ATTRIB, Integer.toString(targetQueryConcurrency));
props.put(QueryServices.MAX_INTRA_REGION_PARALLELIZATION_ATTRIB, Integer.toString(Integer.MAX_VALUE));
// Must update config before starting server
startServer(getUrl(), new ReadOnlyProps(props.entrySet().iterator()));
}
private void initTableValues(long ts) throws Exception {
byte[][] splits = new byte[][] {K3,K4,K9,K11};
ensureTableCreated(getUrl(),STABLE_NAME,splits, ts-2);
String url = getUrl() + ";" + PhoenixRuntime.CURRENT_SCN_ATTRIB + "=" + ts;
Properties props = new Properties(TEST_PROPERTIES);
Connection conn = DriverManager.getConnection(url, props);
PreparedStatement stmt = conn.prepareStatement(
"upsert into " + STABLE_NAME + " VALUES (?, ?)");
stmt.setString(1, new String(KMIN));
stmt.setInt(2, 1);
stmt.execute();
stmt.setString(1, new String(KMAX));
stmt.setInt(2, 2);
stmt.execute();
conn.commit();
conn.close();
}
private static TableRef getTableRef(Connection conn, long ts) throws SQLException {
PhoenixConnection pconn = conn.unwrap(PhoenixConnection.class);
TableRef table = new TableRef(null,pconn.getPMetaData().getTable(SchemaUtil.getTableName(STABLE_SCHEMA_NAME, STABLE_NAME)),ts, false);
return table;
}
private static List<KeyRange> getSplits(Connection conn, long ts, final Scan scan)
throws SQLException {
TableRef tableRef = getTableRef(conn, ts);
PhoenixConnection pconn = conn.unwrap(PhoenixConnection.class);
final List<HRegionLocation> regions = pconn.getQueryServices().getAllTableRegions(tableRef.getTable().getName().getBytes());
StatementContext context = new StatementContext(SelectStatement.SELECT_ONE, pconn, null, Collections.emptyList(), scan);
DefaultParallelIteratorRegionSplitter splitter = new DefaultParallelIteratorRegionSplitter(context, tableRef, HintNode.EMPTY_HINT_NODE) {
@Override
protected List<HRegionLocation> getAllRegions() throws SQLException {
return DefaultParallelIteratorRegionSplitter.filterRegions(regions, scan.getStartRow(), scan.getStopRow());
}
};
List<KeyRange> keyRanges = splitter.getSplits();
Collections.sort(keyRanges, new Comparator<KeyRange>() {
@Override
public int compare(KeyRange o1, KeyRange o2) {
return Bytes.compareTo(o1.getLowerRange(),o2.getLowerRange());
}
});
return keyRanges;
}
@Test
public void testGetSplits() throws Exception {
long ts = nextTimestamp();
initTableValues(ts);
String url = getUrl() + ";" + PhoenixRuntime.CURRENT_SCN_ATTRIB + "=" + ts;
Properties props = new Properties(TEST_PROPERTIES);
Connection conn = DriverManager.getConnection(url, props);
Scan scan = new Scan();
// number of regions > target query concurrency
scan.setStartRow(K1);
scan.setStopRow(K12);
List<KeyRange> keyRanges = getSplits(conn, ts, scan);
assertEquals("Unexpected number of splits: " + keyRanges, 5, keyRanges.size());
assertEquals(newKeyRange(KeyRange.UNBOUND, K3), keyRanges.get(0));
assertEquals(newKeyRange(K3, K4), keyRanges.get(1));
assertEquals(newKeyRange(K4, K9), keyRanges.get(2));
assertEquals(newKeyRange(K9, K11), keyRanges.get(3));
assertEquals(newKeyRange(K11, KeyRange.UNBOUND), keyRanges.get(4));
// (number of regions / 2) > target query concurrency
scan.setStartRow(K3);
scan.setStopRow(K6);
keyRanges = getSplits(conn, ts, scan);
assertEquals("Unexpected number of splits: " + keyRanges, 3, keyRanges.size());
// note that we get a single split from R2 due to small key space
assertEquals(newKeyRange(K3, K4), keyRanges.get(0));
assertEquals(newKeyRange(K4, K6), keyRanges.get(1));
assertEquals(newKeyRange(K6, K9), keyRanges.get(2));
// (number of regions / 2) <= target query concurrency
scan.setStartRow(K5);
scan.setStopRow(K6);
keyRanges = getSplits(conn, ts, scan);
assertEquals("Unexpected number of splits: " + keyRanges, 3, keyRanges.size());
assertEquals(newKeyRange(K4, K5), keyRanges.get(0));
assertEquals(newKeyRange(K5, K6), keyRanges.get(1));
assertEquals(newKeyRange(K6, K9), keyRanges.get(2));
conn.close();
}
@Test
public void testGetLowerUnboundSplits() throws Exception {
long ts = nextTimestamp();
initTableValues(ts);
String url = getUrl() + ";" + PhoenixRuntime.CURRENT_SCN_ATTRIB + "=" + ts;
Properties props = new Properties(TEST_PROPERTIES);
Connection conn = DriverManager.getConnection(url, props);
Scan scan = new Scan();
ConnectionQueryServices services = driver.getConnectionQueryServices(getUrl(), TEST_PROPERTIES);
TableRef table = getTableRef(conn,ts);
services.getStatsManager().updateStats(table);
scan.setStartRow(HConstants.EMPTY_START_ROW);
scan.setStopRow(K1);
List<KeyRange> keyRanges = getSplits(conn, ts, scan);
assertEquals("Unexpected number of splits: " + keyRanges, 3, keyRanges.size());
assertEquals(newKeyRange(KeyRange.UNBOUND, new byte[] {'7'}), keyRanges.get(0));
assertEquals(newKeyRange(new byte[] {'7'}, new byte[] {'M'}), keyRanges.get(1));
assertEquals(newKeyRange(new byte[] {'M'}, K3), keyRanges.get(2));
}
private static class ManualTimeKeeper implements TimeKeeper {
private long currentTime = 0;
@Override
public long currentTimeMillis() {
return currentTime;
}
public void setCurrentTimeMillis(long currentTime) {
this.currentTime = currentTime;
}
}
private static interface ChangeDetector {
boolean isChanged();
}
private boolean waitForAsyncChange(ChangeDetector detector, long maxWaitTimeMs) throws Exception {
long startTime = System.currentTimeMillis();
do {
if (detector.isChanged()) {
return true;
}
try {
Thread.sleep(500);
} catch (InterruptedException e) {
throw e;
}
} while (System.currentTimeMillis() - startTime < maxWaitTimeMs);
return false;
}
private static class MinKeyChange implements ChangeDetector {
private byte[] value;
private StatsManager stats;
private TableRef table;
public MinKeyChange(StatsManager stats, TableRef table) {
this.value = stats.getMinKey(table);
this.stats = stats;
this.table = table;
}
@Override
public boolean isChanged() {
return value != stats.getMinKey(table);
}
}
private static class MaxKeyChange implements ChangeDetector {
private byte[] value;
private StatsManager stats;
private TableRef table;
public MaxKeyChange(StatsManager stats, TableRef table) {
this.value = stats.getMaxKey(table);
this.stats = stats;
this.table = table;
}
@Override
public boolean isChanged() {
return value != stats.getMaxKey(table);
}
}
@Test
public void testStatsManagerImpl() throws Exception {
long ts = nextTimestamp();
initTableValues(ts);
String url = getUrl() + ";" + PhoenixRuntime.CURRENT_SCN_ATTRIB + "=" + ts;
Properties props = new Properties(TEST_PROPERTIES);
Connection conn = DriverManager.getConnection(url, props);
TableRef table = getTableRef(conn,ts);
int updateFreq = 5;
int maxAge = 10;
int startTime = 100;
long waitTime = 5000;
ManualTimeKeeper timeKeeper = new ManualTimeKeeper();
timeKeeper.setCurrentTimeMillis(startTime);
ConnectionQueryServices services = driver.getConnectionQueryServices(getUrl(), TEST_PROPERTIES);
StatsManager stats = new StatsManagerImpl(services, updateFreq, maxAge, timeKeeper);
MinKeyChange minKeyChange = new MinKeyChange(stats, table);
MaxKeyChange maxKeyChange = new MaxKeyChange(stats, table);
byte[] minKey = stats.getMinKey(table);
assertTrue(minKey == null);
assertTrue(waitForAsyncChange(minKeyChange,waitTime));
assertArrayEquals(KMIN, stats.getMinKey(table));
assertArrayEquals(KMAX, stats.getMaxKey(table));
minKeyChange = new MinKeyChange(stats, table);
url = PHOENIX_JDBC_URL + ";" + PhoenixRuntime.CURRENT_SCN_ATTRIB + "=" + ts+2;
props = new Properties(TEST_PROPERTIES);
conn = DriverManager.getConnection(url, props);
PreparedStatement delStmt = conn.prepareStatement("delete from " + STABLE_NAME + " where id=?");
delStmt.setString(1, new String(KMIN));
delStmt.execute();
PreparedStatement upsertStmt = conn.prepareStatement("upsert into " + STABLE_NAME + " VALUES (?, ?)");
upsertStmt.setString(1, new String(KMIN2));
upsertStmt.setInt(2, 1);
upsertStmt.execute();
conn.commit();
assertFalse(waitForAsyncChange(minKeyChange,waitTime)); // Stats won't change until they're attempted to be retrieved again
timeKeeper.setCurrentTimeMillis(timeKeeper.currentTimeMillis() + updateFreq);
minKeyChange = new MinKeyChange(stats, table); // Will kick off change, but will upate asynchronously
assertArrayEquals(KMIN, minKeyChange.value);
assertTrue(waitForAsyncChange(minKeyChange,waitTime));
assertArrayEquals(KMIN2, stats.getMinKey(table));
assertArrayEquals(KMAX, stats.getMaxKey(table));
minKeyChange = new MinKeyChange(stats, table);
timeKeeper.setCurrentTimeMillis(timeKeeper.currentTimeMillis() + maxAge);
minKeyChange = new MinKeyChange(stats, table); // Will kick off change, but will upate asynchronously
assertTrue(null == minKeyChange.value);
assertTrue(waitForAsyncChange(minKeyChange,waitTime));
assertArrayEquals(KMIN2, stats.getMinKey(table));
assertArrayEquals(KMAX, stats.getMaxKey(table));
maxKeyChange = new MaxKeyChange(stats, table);
delStmt.setString(1, new String(KMAX));
delStmt.execute();
upsertStmt.setString(1, new String(KMAX2));
upsertStmt.setInt(2, 1);
upsertStmt.execute();
conn.commit();
conn.close();
assertFalse(waitForAsyncChange(maxKeyChange,waitTime)); // Stats won't change until they're attempted to be retrieved again
timeKeeper.setCurrentTimeMillis(timeKeeper.currentTimeMillis() + updateFreq);
maxKeyChange = new MaxKeyChange(stats, table); // Will kick off change, but will upate asynchronously
assertArrayEquals(KMAX, maxKeyChange.value);
assertTrue(waitForAsyncChange(maxKeyChange,waitTime));
assertArrayEquals(KMAX2, stats.getMaxKey(table));
assertArrayEquals(KMIN2, stats.getMinKey(table));
maxKeyChange = new MaxKeyChange(stats, table);
timeKeeper.setCurrentTimeMillis(timeKeeper.currentTimeMillis() + maxAge);
maxKeyChange = new MaxKeyChange(stats, table); // Will kick off change, but will upate asynchronously
assertTrue(null == maxKeyChange.value);
assertTrue(waitForAsyncChange(maxKeyChange,waitTime));
assertArrayEquals(KMIN2, stats.getMinKey(table));
assertArrayEquals(KMAX2, stats.getMaxKey(table));
}
private static KeyRange newKeyRange(byte[] lowerRange, byte[] upperRange) {
return PDataType.CHAR.getKeyRange(lowerRange, true, upperRange, false);
}
}