/*
* Copyright 2010 The Apache Software Foundation
*
* 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.regionserver;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.client.Increment;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.Test;
public class TestResettingCounters {
@Test
public void testResettingCounters() throws Exception {
HBaseTestingUtility htu = new HBaseTestingUtility();
Configuration conf = htu.getConfiguration();
FileSystem fs = FileSystem.get(conf);
byte [] table = Bytes.toBytes("table");
byte [][] families = new byte [][] {
Bytes.toBytes("family1"),
Bytes.toBytes("family2"),
Bytes.toBytes("family3")
};
int numQualifiers = 10;
byte [][] qualifiers = new byte [numQualifiers][];
for (int i=0; i<numQualifiers; i++) qualifiers[i] = Bytes.toBytes("qf" + i);
int numRows = 10;
byte [][] rows = new byte [numRows][];
for (int i=0; i<numRows; i++) rows[i] = Bytes.toBytes("r" + i);
HTableDescriptor htd = new HTableDescriptor(table);
for (byte [] family : families) htd.addFamily(new HColumnDescriptor(family));
HRegionInfo hri = new HRegionInfo(htd.getName(), null, null, false);
String testDir = htu.getDataTestDir() + "/TestResettingCounters/";
Path path = new Path(testDir);
if (fs.exists(path)) {
if (!fs.delete(path, true)) {
throw new IOException("Failed delete of " + path);
}
}
HRegion region = HRegion.createHRegion(hri, path, conf, htd);
Increment odd = new Increment(rows[0]);
Increment even = new Increment(rows[0]);
Increment all = new Increment(rows[0]);
for (int i=0;i<numQualifiers;i++) {
if (i % 2 == 0) even.addColumn(families[0], qualifiers[i], 1);
else odd.addColumn(families[0], qualifiers[i], 1);
all.addColumn(families[0], qualifiers[i], 1);
}
// increment odd qualifiers 5 times and flush
for (int i=0;i<5;i++) region.increment(odd, null, false);
region.flushcache();
// increment even qualifiers 5 times
for (int i=0;i<5;i++) region.increment(even, null, false);
// increment all qualifiers, should have value=6 for all
Result result = region.increment(all, null, false);
assertEquals(numQualifiers, result.size());
KeyValue [] kvs = result.raw();
for (int i=0;i<kvs.length;i++) {
System.out.println(kvs[i].toString());
assertTrue(Bytes.equals(kvs[i].getQualifier(), qualifiers[i]));
assertEquals(6, Bytes.toLong(kvs[i].getValue()));
}
}
}