/*
* Copyright 2009 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 java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.NavigableSet;
import java.util.TreeSet;
import junit.framework.TestCase;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.KeyValueTestUtil;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.util.Bytes;
public class TestStoreScanner extends TestCase {
private final String CF_STR = "cf";
final byte [] CF = Bytes.toBytes(CF_STR);
/**
* Test utility for building a NavigableSet for scanners.
* @param strCols
* @return
*/
NavigableSet<byte[]> getCols(String ...strCols) {
NavigableSet<byte[]> cols = new TreeSet<byte[]>(Bytes.BYTES_COMPARATOR);
for (String col : strCols) {
byte[] bytes = Bytes.toBytes(col);
cols.add(bytes);
}
return cols;
}
public void testScanTimeRange() throws IOException {
String r1 = "R1";
// returns only 1 of these 2 even though same timestamp
KeyValue [] kvs = new KeyValue[] {
KeyValueTestUtil.create(r1, CF_STR, "a", 1, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create(r1, CF_STR, "a", 2, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create(r1, CF_STR, "a", 3, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create(r1, CF_STR, "a", 4, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create(r1, CF_STR, "a", 5, KeyValue.Type.Put, "dont-care"),
};
KeyValueScanner [] scanners = new KeyValueScanner[] {
new KeyValueScanFixture(KeyValue.COMPARATOR, kvs)
};
Scan scanSpec = new Scan(Bytes.toBytes(r1));
scanSpec.setTimeRange(0, 6);
scanSpec.setMaxVersions();
StoreScanner scan =
new StoreScanner(scanSpec, CF, Long.MAX_VALUE,
KeyValue.COMPARATOR, getCols("a"), scanners);
List<KeyValue> results = new ArrayList<KeyValue>();
assertEquals(true, scan.next(results));
assertEquals(5, results.size());
assertEquals(kvs[kvs.length - 1], results.get(0));
// Scan limited TimeRange
scanSpec = new Scan(Bytes.toBytes(r1));
scanSpec.setTimeRange(1, 3);
scanSpec.setMaxVersions();
scan = new StoreScanner(scanSpec, CF, Long.MAX_VALUE,
KeyValue.COMPARATOR, getCols("a"), scanners);
results = new ArrayList<KeyValue>();
assertEquals(true, scan.next(results));
assertEquals(2, results.size());
// Another range.
scanSpec = new Scan(Bytes.toBytes(r1));
scanSpec.setTimeRange(5, 10);
scanSpec.setMaxVersions();
scan = new StoreScanner(scanSpec, CF, Long.MAX_VALUE,
KeyValue.COMPARATOR, getCols("a"), scanners);
results = new ArrayList<KeyValue>();
assertEquals(true, scan.next(results));
assertEquals(1, results.size());
// See how TimeRange and Versions interact.
// Another range.
scanSpec = new Scan(Bytes.toBytes(r1));
scanSpec.setTimeRange(0, 10);
scanSpec.setMaxVersions(3);
scan = new StoreScanner(scanSpec, CF, Long.MAX_VALUE,
KeyValue.COMPARATOR, getCols("a"), scanners);
results = new ArrayList<KeyValue>();
assertEquals(true, scan.next(results));
assertEquals(3, results.size());
}
public void testScanSameTimestamp() throws IOException {
// returns only 1 of these 2 even though same timestamp
KeyValue [] kvs = new KeyValue[] {
KeyValueTestUtil.create("R1", "cf", "a", 1, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "a", 1, KeyValue.Type.Put, "dont-care"),
};
KeyValueScanner [] scanners = new KeyValueScanner[] {
new KeyValueScanFixture(KeyValue.COMPARATOR, kvs)
};
Scan scanSpec = new Scan(Bytes.toBytes("R1"));
// this only uses maxVersions (default=1) and TimeRange (default=all)
StoreScanner scan =
new StoreScanner(scanSpec, CF, Long.MAX_VALUE,
KeyValue.COMPARATOR, getCols("a"),
scanners);
List<KeyValue> results = new ArrayList<KeyValue>();
assertEquals(true, scan.next(results));
assertEquals(1, results.size());
assertEquals(kvs[0], results.get(0));
}
/**
* Test test shows exactly how the matcher's return codes confuses the StoreScanner
* and prevent it from doing the right thing. Seeking once, then nexting twice
* should return R1, then R2, but in this case it doesnt.
* @throws IOException
*/
public void testWontNextToNext() throws IOException {
// build the scan file:
KeyValue [] kvs = new KeyValue[] {
KeyValueTestUtil.create("R1", "cf", "a", 2, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "a", 1, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R2", "cf", "a", 1, KeyValue.Type.Put, "dont-care")
};
KeyValueScanner [] scanners = new KeyValueScanner[] {
new KeyValueScanFixture(KeyValue.COMPARATOR,
kvs)
};
Scan scanSpec = new Scan(Bytes.toBytes("R1"));
// this only uses maxVersions (default=1) and TimeRange (default=all)
StoreScanner scan =
new StoreScanner(scanSpec, CF, Long.MAX_VALUE,
KeyValue.COMPARATOR, getCols("a"),
scanners);
List<KeyValue> results = new ArrayList<KeyValue>();
scan.next(results);
assertEquals(1, results.size());
assertEquals(kvs[0], results.get(0));
// should be ok...
// now scan _next_ again.
results.clear();
scan.next(results);
assertEquals(1, results.size());
assertEquals(kvs[2], results.get(0));
results.clear();
scan.next(results);
assertEquals(0, results.size());
}
public void testDeleteVersionSameTimestamp() throws IOException {
KeyValue [] kvs = new KeyValue [] {
KeyValueTestUtil.create("R1", "cf", "a", 1, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "a", 1, KeyValue.Type.Delete, "dont-care"),
};
KeyValueScanner [] scanners = new KeyValueScanner[] {
new KeyValueScanFixture(KeyValue.COMPARATOR, kvs)
};
Scan scanSpec = new Scan(Bytes.toBytes("R1"));
StoreScanner scan =
new StoreScanner(scanSpec, CF, Long.MAX_VALUE, KeyValue.COMPARATOR,
getCols("a"), scanners);
List<KeyValue> results = new ArrayList<KeyValue>();
assertFalse(scan.next(results));
assertEquals(0, results.size());
}
/**
* Test the case where there is a delete row 'in front of' the next row, the scanner
* will move to the next row.
*/
public void testDeletedRowThenGoodRow() throws IOException {
KeyValue [] kvs = new KeyValue [] {
KeyValueTestUtil.create("R1", "cf", "a", 1, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "a", 1, KeyValue.Type.Delete, "dont-care"),
KeyValueTestUtil.create("R2", "cf", "a", 20, KeyValue.Type.Put, "dont-care")
};
KeyValueScanner [] scanners = new KeyValueScanner[] {
new KeyValueScanFixture(KeyValue.COMPARATOR, kvs)
};
Scan scanSpec = new Scan(Bytes.toBytes("R1"));
StoreScanner scan =
new StoreScanner(scanSpec, CF, Long.MAX_VALUE, KeyValue.COMPARATOR,
getCols("a"), scanners);
List<KeyValue> results = new ArrayList<KeyValue>();
assertEquals(true, scan.next(results));
assertEquals(0, results.size());
assertEquals(true, scan.next(results));
assertEquals(1, results.size());
assertEquals(kvs[2], results.get(0));
assertEquals(false, scan.next(results));
}
public void testDeleteVersionMaskingMultiplePuts() throws IOException {
long now = System.currentTimeMillis();
KeyValue [] kvs1 = new KeyValue[] {
KeyValueTestUtil.create("R1", "cf", "a", now, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "a", now, KeyValue.Type.Delete, "dont-care")
};
KeyValue [] kvs2 = new KeyValue[] {
KeyValueTestUtil.create("R1", "cf", "a", now-500, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "a", now-100, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "a", now, KeyValue.Type.Put, "dont-care")
};
KeyValueScanner [] scanners = new KeyValueScanner[] {
new KeyValueScanFixture(KeyValue.COMPARATOR, kvs1),
new KeyValueScanFixture(KeyValue.COMPARATOR, kvs2)
};
StoreScanner scan =
new StoreScanner(new Scan(Bytes.toBytes("R1")), CF, Long.MAX_VALUE, KeyValue.COMPARATOR,
getCols("a"), scanners);
List<KeyValue> results = new ArrayList<KeyValue>();
// the two put at ts=now will be masked by the 1 delete, and
// since the scan default returns 1 version we'll return the newest
// key, which is kvs[2], now-100.
assertEquals(true, scan.next(results));
assertEquals(1, results.size());
assertEquals(kvs2[1], results.get(0));
}
public void testDeleteVersionsMixedAndMultipleVersionReturn() throws IOException {
long now = System.currentTimeMillis();
KeyValue [] kvs1 = new KeyValue[] {
KeyValueTestUtil.create("R1", "cf", "a", now, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "a", now, KeyValue.Type.Delete, "dont-care")
};
KeyValue [] kvs2 = new KeyValue[] {
KeyValueTestUtil.create("R1", "cf", "a", now-500, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "a", now+500, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "a", now, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R2", "cf", "z", now, KeyValue.Type.Put, "dont-care")
};
KeyValueScanner [] scanners = new KeyValueScanner[] {
new KeyValueScanFixture(KeyValue.COMPARATOR, kvs1),
new KeyValueScanFixture(KeyValue.COMPARATOR, kvs2)
};
Scan scanSpec = new Scan(Bytes.toBytes("R1")).setMaxVersions(2);
StoreScanner scan =
new StoreScanner(scanSpec, CF, Long.MAX_VALUE, KeyValue.COMPARATOR,
getCols("a"), scanners);
List<KeyValue> results = new ArrayList<KeyValue>();
assertEquals(true, scan.next(results));
assertEquals(2, results.size());
assertEquals(kvs2[1], results.get(0));
assertEquals(kvs2[0], results.get(1));
}
public void testWildCardOneVersionScan() throws IOException {
KeyValue [] kvs = new KeyValue [] {
KeyValueTestUtil.create("R1", "cf", "a", 2, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "b", 1, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "a", 1, KeyValue.Type.DeleteColumn, "dont-care"),
};
KeyValueScanner [] scanners = new KeyValueScanner[] {
new KeyValueScanFixture(KeyValue.COMPARATOR, kvs)
};
StoreScanner scan =
new StoreScanner(new Scan(Bytes.toBytes("R1")), CF, Long.MAX_VALUE, KeyValue.COMPARATOR,
null, scanners);
List<KeyValue> results = new ArrayList<KeyValue>();
assertEquals(true, scan.next(results));
assertEquals(2, results.size());
assertEquals(kvs[0], results.get(0));
assertEquals(kvs[1], results.get(1));
}
public void testWildCardScannerUnderDeletes() throws IOException {
KeyValue [] kvs = new KeyValue [] {
KeyValueTestUtil.create("R1", "cf", "a", 2, KeyValue.Type.Put, "dont-care"), // inc
// orphaned delete column.
KeyValueTestUtil.create("R1", "cf", "a", 1, KeyValue.Type.DeleteColumn, "dont-care"),
// column b
KeyValueTestUtil.create("R1", "cf", "b", 2, KeyValue.Type.Put, "dont-care"), // inc
KeyValueTestUtil.create("R1", "cf", "b", 1, KeyValue.Type.Put, "dont-care"), // inc
// column c
KeyValueTestUtil.create("R1", "cf", "c", 10, KeyValue.Type.Delete, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "c", 10, KeyValue.Type.Put, "dont-care"), // no
KeyValueTestUtil.create("R1", "cf", "c", 9, KeyValue.Type.Put, "dont-care"), // inc
// column d
KeyValueTestUtil.create("R1", "cf", "d", 11, KeyValue.Type.Put, "dont-care"), // inc
KeyValueTestUtil.create("R1", "cf", "d", 10, KeyValue.Type.DeleteColumn, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "d", 9, KeyValue.Type.Put, "dont-care"), // no
KeyValueTestUtil.create("R1", "cf", "d", 8, KeyValue.Type.Put, "dont-care"), // no
};
KeyValueScanner [] scanners = new KeyValueScanner[] {
new KeyValueScanFixture(KeyValue.COMPARATOR, kvs)
};
StoreScanner scan =
new StoreScanner(new Scan().setMaxVersions(2), CF, Long.MAX_VALUE, KeyValue.COMPARATOR,
null, scanners);
List<KeyValue> results = new ArrayList<KeyValue>();
assertEquals(true, scan.next(results));
assertEquals(5, results.size());
assertEquals(kvs[0], results.get(0));
assertEquals(kvs[2], results.get(1));
assertEquals(kvs[3], results.get(2));
assertEquals(kvs[6], results.get(3));
assertEquals(kvs[7], results.get(4));
}
public void testDeleteFamily() throws IOException {
KeyValue [] kvs = new KeyValue[] {
KeyValueTestUtil.create("R1", "cf", "a", 100, KeyValue.Type.DeleteFamily, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "b", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "c", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "d", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "e", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "e", 11, KeyValue.Type.DeleteColumn, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "f", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "g", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "g", 11, KeyValue.Type.Delete, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "h", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "i", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R2", "cf", "a", 11, KeyValue.Type.Put, "dont-care"),
};
KeyValueScanner [] scanners = new KeyValueScanner[] {
new KeyValueScanFixture(KeyValue.COMPARATOR, kvs)
};
StoreScanner scan =
new StoreScanner(new Scan().setMaxVersions(Integer.MAX_VALUE), CF, Long.MAX_VALUE, KeyValue.COMPARATOR,
null, scanners);
List<KeyValue> results = new ArrayList<KeyValue>();
assertEquals(true, scan.next(results));
assertEquals(0, results.size());
assertEquals(true, scan.next(results));
assertEquals(1, results.size());
assertEquals(kvs[kvs.length-1], results.get(0));
assertEquals(false, scan.next(results));
}
public void testDeleteColumn() throws IOException {
KeyValue [] kvs = new KeyValue[] {
KeyValueTestUtil.create("R1", "cf", "a", 10, KeyValue.Type.DeleteColumn, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "a", 9, KeyValue.Type.Delete, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "a", 8, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "b", 5, KeyValue.Type.Put, "dont-care")
};
KeyValueScanner [] scanners = new KeyValueScanner[] {
new KeyValueScanFixture(KeyValue.COMPARATOR, kvs),
};
StoreScanner scan =
new StoreScanner(new Scan(), CF, Long.MAX_VALUE, KeyValue.COMPARATOR,
null, scanners);
List<KeyValue> results = new ArrayList<KeyValue>();
assertEquals(true, scan.next(results));
assertEquals(1, results.size());
assertEquals(kvs[3], results.get(0));
}
public void testSkipColumn() throws IOException {
KeyValue [] kvs = new KeyValue[] {
KeyValueTestUtil.create("R1", "cf", "a", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "b", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "c", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "d", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "e", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "f", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "g", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "h", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "i", 11, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R2", "cf", "a", 11, KeyValue.Type.Put, "dont-care"),
};
KeyValueScanner [] scanners = new KeyValueScanner[] {
new KeyValueScanFixture(KeyValue.COMPARATOR, kvs)
};
StoreScanner scan =
new StoreScanner(new Scan(), CF, Long.MAX_VALUE, KeyValue.COMPARATOR,
getCols("a", "d"), scanners);
List<KeyValue> results = new ArrayList<KeyValue>();
assertEquals(true, scan.next(results));
assertEquals(2, results.size());
assertEquals(kvs[0], results.get(0));
assertEquals(kvs[3], results.get(1));
results.clear();
assertEquals(true, scan.next(results));
assertEquals(1, results.size());
assertEquals(kvs[kvs.length-1], results.get(0));
results.clear();
assertEquals(false, scan.next(results));
}
/**
* Test expiration of KeyValues in combination with a configured TTL for
* a column family (as should be triggered in a major compaction).
*/
public void testWildCardTtlScan() throws IOException {
long now = System.currentTimeMillis();
KeyValue [] kvs = new KeyValue[] {
KeyValueTestUtil.create("R1", "cf", "a", now-1000, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "b", now-10, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "c", now-200, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R1", "cf", "d", now-10000, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R2", "cf", "a", now, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R2", "cf", "b", now-10, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R2", "cf", "c", now-200, KeyValue.Type.Put, "dont-care"),
KeyValueTestUtil.create("R2", "cf", "c", now-1000, KeyValue.Type.Put, "dont-care")
};
KeyValueScanner [] scanners = new KeyValueScanner[] {
new KeyValueScanFixture(KeyValue.COMPARATOR, kvs)
};
Scan scan = new Scan();
scan.setMaxVersions(1);
StoreScanner scanner =
new StoreScanner(scan, CF, 500, KeyValue.COMPARATOR,
null, scanners);
List<KeyValue> results = new ArrayList<KeyValue>();
assertEquals(true, scanner.next(results));
assertEquals(2, results.size());
assertEquals(kvs[1], results.get(0));
assertEquals(kvs[2], results.get(1));
results.clear();
assertEquals(true, scanner.next(results));
assertEquals(3, results.size());
assertEquals(kvs[4], results.get(0));
assertEquals(kvs[5], results.get(1));
assertEquals(kvs[6], results.get(2));
results.clear();
assertEquals(false, scanner.next(results));
}
}