/*
*
* 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.hadoop.hbase.coprocessor;
import static org.junit.Assert.assertEquals;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.*;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.client.coprocessor.AggregationClient;
import org.apache.hadoop.hbase.client.coprocessor.LongColumnInterpreter;
import org.apache.hadoop.hbase.filter.Filter;
import org.apache.hadoop.hbase.filter.PrefixFilter;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;
/**
* A test class to cover aggregate functions, that can be implemented using
* Coprocessors.
*/
@Category(MediumTests.class)
public class TestAggregateProtocol {
protected static Log myLog = LogFactory.getLog(TestAggregateProtocol.class);
/**
* Creating the test infrastructure.
*/
private static final byte[] TEST_TABLE = Bytes.toBytes("TestTable");
private static final byte[] TEST_FAMILY = Bytes.toBytes("TestFamily");
private static final byte[] TEST_QUALIFIER = Bytes.toBytes("TestQualifier");
private static final byte[] TEST_MULTI_CQ = Bytes.toBytes("TestMultiCQ");
private static byte[] ROW = Bytes.toBytes("testRow");
private static final int ROWSIZE = 20;
private static final int rowSeperator1 = 5;
private static final int rowSeperator2 = 12;
private static byte[][] ROWS = makeN(ROW, ROWSIZE);
private static HBaseTestingUtility util = new HBaseTestingUtility();
private static Configuration conf = util.getConfiguration();
/**
* A set up method to start the test cluster. AggregateProtocolImpl is
* registered and will be loaded during region startup.
* @throws Exception
*/
@BeforeClass
public static void setupBeforeClass() throws Exception {
conf.set(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY,
"org.apache.hadoop.hbase.coprocessor.AggregateImplementation");
util.startMiniCluster(2);
HTable table = util.createTable(TEST_TABLE, TEST_FAMILY);
util.createMultiRegions(util.getConfiguration(), table, TEST_FAMILY,
new byte[][] { HConstants.EMPTY_BYTE_ARRAY, ROWS[rowSeperator1],
ROWS[rowSeperator2] });
/**
* The testtable has one CQ which is always populated and one variable CQ
* for each row rowkey1: CF:CQ CF:CQ1 rowKey2: CF:CQ CF:CQ2
*/
for (int i = 0; i < ROWSIZE; i++) {
Put put = new Put(ROWS[i]);
put.setWriteToWAL(false);
Long l = new Long(i);
put.add(TEST_FAMILY, TEST_QUALIFIER, Bytes.toBytes(l));
table.put(put);
Put p2 = new Put(ROWS[i]);
put.setWriteToWAL(false);
p2.add(TEST_FAMILY, Bytes.add(TEST_MULTI_CQ, Bytes.toBytes(l)), Bytes
.toBytes(l * 10));
table.put(p2);
}
table.close();
}
/**
* Shutting down the cluster
* @throws Exception
*/
@AfterClass
public static void tearDownAfterClass() throws Exception {
util.shutdownMiniCluster();
}
/**
* an infrastructure method to prepare rows for the testtable.
* @param base
* @param n
* @return
*/
private static byte[][] makeN(byte[] base, int n) {
byte[][] ret = new byte[n][];
for (int i = 0; i < n; i++) {
ret[i] = Bytes.add(base, Bytes.toBytes(i));
}
return ret;
}
/**
* ****************** Test cases for Median **********************
*/
/**
* @throws Throwable
*/
@Test
public void testMedianWithValidRange() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY,TEST_QUALIFIER);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long median = aClient.median(TEST_TABLE, ci,
scan);
assertEquals(8L, median);
}
/**
* **************************** ROW COUNT Test cases *******************
*/
/**
* This will test rowcount with a valid range, i.e., a subset of rows. It will
* be the most common use case.
* @throws Throwable
*/
@Test
public void testRowCountWithValidRange() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
scan.setStartRow(ROWS[2]);
scan.setStopRow(ROWS[14]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long rowCount = aClient.rowCount(TEST_TABLE, ci, scan);
assertEquals(12, rowCount);
}
/**
* This will test the row count on the entire table. Startrow and endrow will
* be null.
* @throws Throwable
*/
@Test
public void testRowCountAllTable() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long rowCount = aClient.rowCount(TEST_TABLE, ci,
scan);
assertEquals(ROWSIZE, rowCount);
}
/**
* This will test the row count with startrow > endrow. The result should be
* -1.
* @throws Throwable
*/
@Test
public void testRowCountWithInvalidRange1() {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
scan.setStartRow(ROWS[5]);
scan.setStopRow(ROWS[2]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long rowCount = -1;
try {
rowCount = aClient.rowCount(TEST_TABLE, ci, scan);
} catch (Throwable e) {
myLog.error("Exception thrown in the invalidRange method"
+ e.getStackTrace());
}
assertEquals(-1, rowCount);
}
/**
* This will test the row count with startrow = endrow and they will be
* non-null. The result should be 0, as it assumes a non-get query.
* @throws Throwable
*/
@Test
public void testRowCountWithInvalidRange2() {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
scan.setStartRow(ROWS[5]);
scan.setStopRow(ROWS[5]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long rowCount = -1;
try {
rowCount = aClient.rowCount(TEST_TABLE, ci, scan);
} catch (Throwable e) {
rowCount = 0;
}
assertEquals(0, rowCount);
}
/**
* This should return a 0
*/
@Test
public void testRowCountWithNullCF() {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.setStartRow(ROWS[5]);
scan.setStopRow(ROWS[15]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long rowCount = -1;
try {
rowCount = aClient.rowCount(TEST_TABLE, ci, scan);
} catch (Throwable e) {
rowCount = 0;
}
assertEquals(0, rowCount);
}
@Test
public void testRowCountWithNullCQ() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long rowCount = aClient.rowCount(TEST_TABLE, ci,
scan);
assertEquals(20, rowCount);
}
@Test
public void testRowCountWithPrefixFilter() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
Filter f = new PrefixFilter(Bytes.toBytes("foo:bar"));
scan.setFilter(f);
long rowCount = aClient.rowCount(TEST_TABLE, ci,
scan);
assertEquals(0, rowCount);
}
/**
* ***************Test cases for Maximum *******************
*/
/**
* give max for the entire table.
* @throws Throwable
*/
@Test
public void testMaxWithValidRange() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long maximum = aClient.max(TEST_TABLE, ci, scan);
assertEquals(19, maximum);
}
/**
* @throws Throwable
*/
@Test
public void testMaxWithValidRange2() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
scan.setStartRow(ROWS[5]);
scan.setStopRow(ROWS[15]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long max = aClient.max(TEST_TABLE, ci, scan);
assertEquals(14, max);
}
@Test
public void testMaxWithValidRangeWithNoCQ() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long maximum = aClient.max(TEST_TABLE, ci, scan);
assertEquals(190, maximum);
}
@Test
public void testMaxWithValidRange2WithNoCQ() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
scan.setStartRow(ROWS[6]);
scan.setStopRow(ROWS[7]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long max = aClient.max(TEST_TABLE, ci, scan);
assertEquals(60, max);
}
@Test
public void testMaxWithValidRangeWithNullCF() {
AggregationClient aClient = new AggregationClient(conf);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
Scan scan = new Scan();
Long max = null;
try {
max = aClient.max(TEST_TABLE, ci, scan);
} catch (Throwable e) {
max = null;
}
assertEquals(null, max);// CP will throw an IOException about the
// null column family, and max will be set to 0
}
@Test
public void testMaxWithInvalidRange() {
AggregationClient aClient = new AggregationClient(conf);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
Scan scan = new Scan();
scan.setStartRow(ROWS[4]);
scan.setStopRow(ROWS[2]);
scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
long max = Long.MIN_VALUE;
try {
max = aClient.max(TEST_TABLE, ci, scan);
} catch (Throwable e) {
max = 0;
}
assertEquals(0, max);// control should go to the catch block
}
@Test
public void testMaxWithInvalidRange2() throws Throwable {
long max = Long.MIN_VALUE;
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
scan.setStartRow(ROWS[4]);
scan.setStopRow(ROWS[4]);
try {
AggregationClient aClient = new AggregationClient(conf);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
max = aClient.max(TEST_TABLE, ci, scan);
} catch (Exception e) {
max = 0;
}
assertEquals(0, max);// control should go to the catch block
}
@Test
public void testMaxWithFilter() throws Throwable {
Long max = 0l;
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
Filter f = new PrefixFilter(Bytes.toBytes("foo:bar"));
scan.setFilter(f);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
max = aClient.max(TEST_TABLE, ci, scan);
assertEquals(null, max);
}
/**
* **************************Test cases for Minimum ***********************
*/
/**
* @throws Throwable
*/
@Test
public void testMinWithValidRange() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
scan.setStartRow(HConstants.EMPTY_START_ROW);
scan.setStopRow(HConstants.EMPTY_END_ROW);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
Long min = aClient.min(TEST_TABLE, ci,
scan);
assertEquals(0l, min.longValue());
}
/**
* @throws Throwable
*/
@Test
public void testMinWithValidRange2() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
scan.setStartRow(ROWS[5]);
scan.setStopRow(ROWS[15]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long min = aClient.min(TEST_TABLE, ci, scan);
assertEquals(5, min);
}
@Test
public void testMinWithValidRangeWithNoCQ() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
scan.setStartRow(HConstants.EMPTY_START_ROW);
scan.setStopRow(HConstants.EMPTY_END_ROW);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long min = aClient.min(TEST_TABLE, ci,
scan);
assertEquals(0, min);
}
@Test
public void testMinWithValidRange2WithNoCQ() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
scan.setStartRow(ROWS[6]);
scan.setStopRow(ROWS[7]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long min = aClient.min(TEST_TABLE, ci, scan);
assertEquals(6, min);
}
@Test
public void testMinWithValidRangeWithNullCF() {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.setStartRow(ROWS[5]);
scan.setStopRow(ROWS[15]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
Long min = null;
try {
min = aClient.min(TEST_TABLE, ci, scan);
} catch (Throwable e) {
}
assertEquals(null, min);// CP will throw an IOException about the
// null column family, and max will be set to 0
}
@Test
public void testMinWithInvalidRange() {
AggregationClient aClient = new AggregationClient(conf);
Long min = null;
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
scan.setStartRow(ROWS[4]);
scan.setStopRow(ROWS[2]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
try {
min = aClient.min(TEST_TABLE, ci, scan);
} catch (Throwable e) {
}
assertEquals(null, min);// control should go to the catch block
}
@Test
public void testMinWithInvalidRange2() {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
scan.setStartRow(ROWS[6]);
scan.setStopRow(ROWS[6]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
Long min = null;
try {
min = aClient.min(TEST_TABLE, ci, scan);
} catch (Throwable e) {
}
assertEquals(null, min);// control should go to the catch block
}
@Test
public void testMinWithFilter() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
Filter f = new PrefixFilter(Bytes.toBytes("foo:bar"));
scan.setFilter(f);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
Long min = null;
min = aClient.min(TEST_TABLE, ci, scan);
assertEquals(null, min);
}
/**
* *************** Test cases for Sum *********************
*/
/**
* @throws Throwable
*/
@Test
public void testSumWithValidRange() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY,TEST_QUALIFIER);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long sum = aClient.sum(TEST_TABLE, ci,
scan);
assertEquals(190, sum);
}
/**
* @throws Throwable
*/
@Test
public void testSumWithValidRange2() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY,TEST_QUALIFIER);
scan.setStartRow(ROWS[5]);
scan.setStopRow(ROWS[15]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long sum = aClient.sum(TEST_TABLE, ci, scan);
assertEquals(95, sum);
}
@Test
public void testSumWithValidRangeWithNoCQ() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long sum = aClient.sum(TEST_TABLE, ci,
scan);
assertEquals(190 + 1900, sum);
}
@Test
public void testSumWithValidRange2WithNoCQ() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
scan.setStartRow(ROWS[6]);
scan.setStopRow(ROWS[7]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
long sum = aClient.sum(TEST_TABLE, ci, scan);
assertEquals(6 + 60, sum);
}
@Test
public void testSumWithValidRangeWithNullCF() {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.setStartRow(ROWS[6]);
scan.setStopRow(ROWS[7]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
Long sum = null;
try {
sum = aClient.sum(TEST_TABLE, ci, scan);
} catch (Throwable e) {
}
assertEquals(null, sum);// CP will throw an IOException about the
// null column family, and max will be set to 0
}
@Test
public void testSumWithInvalidRange() {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
scan.setStartRow(ROWS[6]);
scan.setStopRow(ROWS[2]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
Long sum = null;
try {
sum = aClient.sum(TEST_TABLE, ci, scan);
} catch (Throwable e) {
}
assertEquals(null, sum);// control should go to the catch block
}
@Test
public void testSumWithFilter() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Filter f = new PrefixFilter(Bytes.toBytes("foo:bar"));
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
scan.setFilter(f);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
Long sum = null;
sum = aClient.sum(TEST_TABLE, ci, scan);
assertEquals(null, sum);
}
/**
* ****************************** Test Cases for Avg **************
*/
/**
* @throws Throwable
*/
@Test
public void testAvgWithValidRange() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY,TEST_QUALIFIER);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
double avg = aClient.avg(TEST_TABLE, ci,
scan);
assertEquals(9.5, avg, 0);
}
/**
* @throws Throwable
*/
@Test
public void testAvgWithValidRange2() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY,TEST_QUALIFIER);
scan.setStartRow(ROWS[5]);
scan.setStopRow(ROWS[15]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
double avg = aClient.avg(TEST_TABLE, ci, scan);
assertEquals(9.5, avg, 0);
}
@Test
public void testAvgWithValidRangeWithNoCQ() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
double avg = aClient.avg(TEST_TABLE, ci,
scan);
assertEquals(104.5, avg, 0);
}
@Test
public void testAvgWithValidRange2WithNoCQ() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
scan.setStartRow(ROWS[6]);
scan.setStopRow(ROWS[7]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
double avg = aClient.avg(TEST_TABLE, ci, scan);
assertEquals(6 + 60, avg, 0);
}
@Test
public void testAvgWithValidRangeWithNullCF() {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
Double avg = null;
try {
avg = aClient.avg(TEST_TABLE, ci, scan);
} catch (Throwable e) {
}
assertEquals(null, avg);// CP will throw an IOException about the
// null column family, and max will be set to 0
}
@Test
public void testAvgWithInvalidRange() {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY,TEST_QUALIFIER);
scan.setStartRow(ROWS[5]);
scan.setStopRow(ROWS[1]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
Double avg = null;
try {
avg = aClient.avg(TEST_TABLE, ci, scan);
} catch (Throwable e) {
}
assertEquals(null, avg);// control should go to the catch block
}
@Test
public void testAvgWithFilter() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY,TEST_QUALIFIER);
Filter f = new PrefixFilter(Bytes.toBytes("foo:bar"));
scan.setFilter(f);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
Double avg = null;
avg = aClient.avg(TEST_TABLE, ci, scan);
assertEquals(Double.NaN, avg, 0);
}
/**
* ****************** Test cases for STD **********************
*/
/**
* @throws Throwable
*/
@Test
public void testStdWithValidRange() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY,TEST_QUALIFIER);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
double std = aClient.std(TEST_TABLE, ci,
scan);
assertEquals(5.766, std, 0.05d);
}
/**
* @throws Throwable
*/
@Test
public void testStdWithValidRange2() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addColumn(TEST_FAMILY,TEST_QUALIFIER);
scan.setStartRow(ROWS[5]);
scan.setStopRow(ROWS[15]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
double std = aClient.std(TEST_TABLE, ci, scan);
assertEquals(2.87, std, 0.05d);
}
@Test
public void testStdWithValidRangeWithNoCQ() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
double std = aClient.std(TEST_TABLE, ci,
scan);
assertEquals(63.42, std, 0.05d);
}
@Test
public void testStdWithValidRange2WithNoCQ() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
scan.setStartRow(ROWS[6]);
scan.setStopRow(ROWS[7]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
double std = aClient.std(TEST_TABLE, ci, scan);
assertEquals(0, std, 0);
}
@Test
public void testStdWithValidRangeWithNullCF() {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.setStartRow(ROWS[6]);
scan.setStopRow(ROWS[17]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
Double std = null;
try {
std = aClient.std(TEST_TABLE, ci, scan);
} catch (Throwable e) {
}
assertEquals(null, std);// CP will throw an IOException about the
// null column family, and max will be set to 0
}
@Test
public void testStdWithInvalidRange() {
AggregationClient aClient = new AggregationClient(conf);
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
scan.setStartRow(ROWS[6]);
scan.setStopRow(ROWS[1]);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
Double std = null;
try {
std = aClient.std(TEST_TABLE, ci, scan);
} catch (Throwable e) {
}
assertEquals(null, std);// control should go to the catch block
}
@Test
public void testStdWithFilter() throws Throwable {
AggregationClient aClient = new AggregationClient(conf);
Filter f = new PrefixFilter(Bytes.toBytes("foo:bar"));
Scan scan = new Scan();
scan.addFamily(TEST_FAMILY);
scan.setFilter(f);
final ColumnInterpreter<Long, Long> ci = new LongColumnInterpreter();
Double std = null;
std = aClient.std(TEST_TABLE, ci, scan);
assertEquals(Double.NaN, std, 0);
}
}