| /** |
| * 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.client; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import org.apache.hadoop.hbase.Cell; |
| import org.apache.hadoop.hbase.HBaseClassTestRule; |
| import org.apache.hadoop.hbase.HBaseTestingUtility; |
| import org.apache.hadoop.hbase.HTestConst; |
| import org.apache.hadoop.hbase.KeyValue; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.regionserver.HRegion; |
| import org.apache.hadoop.hbase.regionserver.RegionScanner; |
| import org.apache.hadoop.hbase.testclassification.ClientTests; |
| import org.apache.hadoop.hbase.testclassification.SmallTests; |
| import org.junit.ClassRule; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| /** |
| * Test scan/get offset and limit settings within one row through HRegion API. |
| */ |
| @Category({SmallTests.class, ClientTests.class}) |
| public class TestIntraRowPagination { |
| |
| @ClassRule |
| public static final HBaseClassTestRule CLASS_RULE = |
| HBaseClassTestRule.forClass(TestIntraRowPagination.class); |
| |
| private static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility(); |
| |
| /** |
| * Test from client side for scan with maxResultPerCF set |
| */ |
| @Test |
| public void testScanLimitAndOffset() throws Exception { |
| //byte [] TABLE = HTestConst.DEFAULT_TABLE_BYTES; |
| byte [][] ROWS = HTestConst.makeNAscii(HTestConst.DEFAULT_ROW_BYTES, 2); |
| byte [][] FAMILIES = HTestConst.makeNAscii(HTestConst.DEFAULT_CF_BYTES, 3); |
| byte [][] QUALIFIERS = HTestConst.makeNAscii(HTestConst.DEFAULT_QUALIFIER_BYTES, 10); |
| |
| TableDescriptorBuilder builder = |
| TableDescriptorBuilder.newBuilder(TableName.valueOf(HTestConst.DEFAULT_TABLE_BYTES)); |
| |
| RegionInfo info = RegionInfoBuilder.newBuilder(HTestConst.DEFAULT_TABLE).build(); |
| for (byte[] family : FAMILIES) { |
| builder.setColumnFamily(ColumnFamilyDescriptorBuilder.of(family)); |
| } |
| HRegion region = HBaseTestingUtility.createRegionAndWAL(info, TEST_UTIL.getDataTestDir(), |
| TEST_UTIL.getConfiguration(), builder.build()); |
| try { |
| Put put; |
| Scan scan; |
| Result result; |
| boolean toLog = true; |
| |
| List<Cell> kvListExp = new ArrayList<>(); |
| |
| int storeOffset = 1; |
| int storeLimit = 3; |
| for (int r = 0; r < ROWS.length; r++) { |
| put = new Put(ROWS[r]); |
| for (int c = 0; c < FAMILIES.length; c++) { |
| for (int q = 0; q < QUALIFIERS.length; q++) { |
| KeyValue kv = new KeyValue(ROWS[r], FAMILIES[c], QUALIFIERS[q], 1, |
| HTestConst.DEFAULT_VALUE_BYTES); |
| put.add(kv); |
| if (storeOffset <= q && q < storeOffset + storeLimit) { |
| kvListExp.add(kv); |
| } |
| } |
| } |
| region.put(put); |
| } |
| |
| scan = new Scan(); |
| scan.setRowOffsetPerColumnFamily(storeOffset); |
| scan.setMaxResultsPerColumnFamily(storeLimit); |
| RegionScanner scanner = region.getScanner(scan); |
| List<Cell> kvListScan = new ArrayList<>(); |
| List<Cell> results = new ArrayList<>(); |
| while (scanner.next(results) || !results.isEmpty()) { |
| kvListScan.addAll(results); |
| results.clear(); |
| } |
| result = Result.create(kvListScan); |
| TestScannersFromClientSide.verifyResult(result, kvListExp, toLog, |
| "Testing scan with storeOffset and storeLimit"); |
| } finally { |
| HBaseTestingUtility.closeRegionAndWAL(region); |
| } |
| } |
| |
| } |