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Posted to jira@kafka.apache.org by GitBox <gi...@apache.org> on 2021/02/25 08:22:45 UTC
[GitHub] [kafka] vamossagar12 commented on a change in pull request #9717: KAFKA-10766: Unit test cases for RocksDBRangeIterator
vamossagar12 commented on a change in pull request #9717:
URL: https://github.com/apache/kafka/pull/9717#discussion_r582629479
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File path: streams/src/test/java/org/apache/kafka/streams/state/internals/RocksDBRangeIteratorTest.java
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@@ -0,0 +1,447 @@
+/*
+ * 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.kafka.streams.state.internals;
+
+import org.apache.kafka.common.utils.Bytes;
+import org.junit.Test;
+import org.rocksdb.RocksIterator;
+
+import java.util.Collections;
+import java.util.NoSuchElementException;
+
+import static org.easymock.EasyMock.mock;
+import static org.easymock.EasyMock.expect;
+import static org.easymock.EasyMock.expectLastCall;
+import static org.easymock.EasyMock.replay;
+import static org.easymock.EasyMock.verify;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.core.Is.is;
+import static org.junit.Assert.assertThrows;
+
+public class RocksDBRangeIteratorTest {
+
+ private final String storeName = "store";
+ private final String key1 = "a";
+ private final String key2 = "b";
+ private final String key3 = "c";
+ private final String key4 = "d";
+
+ private final String value = "value";
+ private final Bytes key1Bytes = Bytes.wrap(key1.getBytes());
+ private final Bytes key2Bytes = Bytes.wrap(key2.getBytes());
+ private final Bytes key3Bytes = Bytes.wrap(key3.getBytes());
+ private final Bytes key4Bytes = Bytes.wrap(key4.getBytes());
+ private final byte[] valueBytes = value.getBytes();
+
+ @Test
+ public void shouldReturnAllKeysInTheRangeInForwardDirection() {
+ final RocksIterator rocksIterator = mock(RocksIterator.class);
+ rocksIterator.seek(key1Bytes.get());
+ expect(rocksIterator.isValid())
+ .andReturn(true)
+ .andReturn(true)
+ .andReturn(true)
+ .andReturn(false);
+ expect(rocksIterator.key())
+ .andReturn(key1Bytes.get())
+ .andReturn(key2Bytes.get())
+ .andReturn(key3Bytes.get());
+ expect(rocksIterator.value()).andReturn(valueBytes).times(3);
+ rocksIterator.next();
+ expectLastCall().times(3);
+ replay(rocksIterator);
+ final RocksDBRangeIterator rocksDBRangeIterator = new RocksDBRangeIterator(
+ storeName,
+ rocksIterator,
+ Collections.emptySet(),
+ key1Bytes,
+ key3Bytes,
+ true,
+ true
+ );
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key1Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key2Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key3Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(false));
+ verify(rocksIterator);
+ }
+
+ @Test
+ public void shouldReturnAllKeysInTheRangeReverseDirection() {
+ final RocksIterator rocksIterator = mock(RocksIterator.class);
+ rocksIterator.seekForPrev(key3Bytes.get());
+ expect(rocksIterator.isValid())
+ .andReturn(true)
+ .andReturn(true)
+ .andReturn(true)
+ .andReturn(false);
+ expect(rocksIterator.key())
+ .andReturn(key3Bytes.get())
+ .andReturn(key2Bytes.get())
+ .andReturn(key1Bytes.get());
+ expect(rocksIterator.value()).andReturn(valueBytes).times(3);
+ rocksIterator.prev();
+ expectLastCall().times(3);
+ replay(rocksIterator);
+ final RocksDBRangeIterator rocksDBRangeIterator = new RocksDBRangeIterator(
+ storeName,
+ rocksIterator,
+ Collections.emptySet(),
+ key1Bytes,
+ key3Bytes,
+ false,
+ true
+ );
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key3Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key2Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key1Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(false));
+ verify(rocksIterator);
+ }
+
+ @Test
+ public void shouldReturnAllKeysWhenLastKeyIsGreaterThanLargestKeyInStateStoreInForwardDirection() {
+ final Bytes toBytes = Bytes.increment(key4Bytes);
+ final RocksIterator rocksIterator = mock(RocksIterator.class);
+ rocksIterator.seek(key1Bytes.get());
+ expect(rocksIterator.isValid())
+ .andReturn(true)
+ .andReturn(true)
+ .andReturn(true)
+ .andReturn(true)
+ .andReturn(false);
+ expect(rocksIterator.key())
+ .andReturn(key1Bytes.get())
+ .andReturn(key2Bytes.get())
+ .andReturn(key3Bytes.get())
+ .andReturn(key4Bytes.get());
+ expect(rocksIterator.value()).andReturn(valueBytes).times(4);
+ rocksIterator.next();
+ expectLastCall().times(4);
+ replay(rocksIterator);
+ final RocksDBRangeIterator rocksDBRangeIterator = new RocksDBRangeIterator(
+ storeName,
+ rocksIterator,
+ Collections.emptySet(),
+ key1Bytes,
+ toBytes,
+ true,
+ true
+ );
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key1Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key2Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key3Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key4Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(false));
+ verify(rocksIterator);
+ }
+
+
+ @Test
+ public void shouldReturnAllKeysWhenLastKeyIsSmallerThanSmallestKeyInStateStoreInReverseDirection() {
+ final RocksIterator rocksIterator = mock(RocksIterator.class);
+ rocksIterator.seekForPrev(key4Bytes.get());
+ expect(rocksIterator.isValid())
+ .andReturn(true)
+ .andReturn(true)
+ .andReturn(true)
+ .andReturn(true)
+ .andReturn(false);
+ expect(rocksIterator.key())
+ .andReturn(key4Bytes.get())
+ .andReturn(key3Bytes.get())
+ .andReturn(key2Bytes.get())
+ .andReturn(key1Bytes.get());
+ expect(rocksIterator.value()).andReturn(valueBytes).times(4);
+ rocksIterator.prev();
+ expectLastCall().times(4);
+ replay(rocksIterator);
+ final RocksDBRangeIterator rocksDBRangeIterator = new RocksDBRangeIterator(
+ storeName,
+ rocksIterator,
+ Collections.emptySet(),
+ key1Bytes,
+ key4Bytes,
+ false,
+ true
+ );
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key4Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key3Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key2Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key1Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(false));
+ verify(rocksIterator);
+ }
+
+
+ @Test
+ public void shouldReturnNoKeysWhenLastKeyIsSmallerThanSmallestKeyInStateStoreForwardDirection() {
+ // key range in state store: [c-f]
+ final RocksIterator rocksIterator = mock(RocksIterator.class);
+ rocksIterator.seek(key1Bytes.get());
+ expect(rocksIterator.isValid()).andReturn(false);
+ replay(rocksIterator);
+ final RocksDBRangeIterator rocksDBRangeIterator = new RocksDBRangeIterator(
+ storeName,
+ rocksIterator,
+ Collections.emptySet(),
+ key1Bytes,
+ key2Bytes,
+ true,
+ true
+ );
+ assertThat(rocksDBRangeIterator.hasNext(), is(false));
+ verify(rocksIterator);
+ }
+
+ @Test
+ public void shouldReturnNoKeysWhenLastKeyIsLargerThanLargestKeyInStateStoreReverseDirection() {
+ // key range in state store: [c-f]
+ final String from = "g";
+ final String to = "h";
+ final Bytes fromBytes = Bytes.wrap(from.getBytes());
+ final Bytes toBytes = Bytes.wrap(to.getBytes());
+ final RocksIterator rocksIterator = mock(RocksIterator.class);
+ rocksIterator.seekForPrev(toBytes.get());
+ expect(rocksIterator.isValid())
+ .andReturn(false);
+ replay(rocksIterator);
+ final RocksDBRangeIterator rocksDBRangeIterator = new RocksDBRangeIterator(
+ storeName,
+ rocksIterator,
+ Collections.emptySet(),
+ fromBytes,
+ toBytes,
+ false,
+ true
+ );
+ assertThat(rocksDBRangeIterator.hasNext(), is(false));
+ verify(rocksIterator);
+ }
+
+ @Test
+ public void shouldReturnAllKeysInPartiallyOverlappingRangeInForwardDirection() {
+ final RocksIterator rocksIterator = mock(RocksIterator.class);
+ rocksIterator.seek(key1Bytes.get());
+ expect(rocksIterator.isValid())
+ .andReturn(true)
+ .andReturn(true)
+ .andReturn(false);
+ expect(rocksIterator.key())
+ .andReturn(key2Bytes.get())
+ .andReturn(key3Bytes.get());
+ expect(rocksIterator.value()).andReturn(valueBytes).times(2);
+ rocksIterator.next();
+ expectLastCall().times(2);
+ replay(rocksIterator);
+ final RocksDBRangeIterator rocksDBRangeIterator = new RocksDBRangeIterator(
+ storeName,
+ rocksIterator,
+ Collections.emptySet(),
+ key1Bytes,
+ key3Bytes,
+ true,
+ true
+ );
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key2Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key3Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(false));
+ verify(rocksIterator);
+ }
+
+ @Test
+ public void shouldReturnAllKeysInPartiallyOverlappingRangeInReverseDirection() {
+ final RocksIterator rocksIterator = mock(RocksIterator.class);
+ final String to = "e";
+ final Bytes toBytes = Bytes.wrap(to.getBytes());
+ rocksIterator.seekForPrev(toBytes.get());
+ expect(rocksIterator.isValid())
+ .andReturn(true)
+ .andReturn(true)
+ .andReturn(false);
+ expect(rocksIterator.key())
+ .andReturn(key4Bytes.get())
+ .andReturn(key3Bytes.get());
+ expect(rocksIterator.value()).andReturn(valueBytes).times(2);
+ rocksIterator.prev();
+ expectLastCall().times(2);
+ replay(rocksIterator);
+ final RocksDBRangeIterator rocksDBRangeIterator = new RocksDBRangeIterator(
+ storeName,
+ rocksIterator,
+ Collections.emptySet(),
+ key3Bytes,
+ toBytes,
+ false,
+ true
+ );
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key4Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(key3Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(false));
+ verify(rocksIterator);
+ }
+
+ @Test
+ public void shouldReturnTheCurrentKeyOnInvokingPeekNextKeyInForwardDirection() {
+ final RocksIterator rocksIterator = mock(RocksIterator.class);
+ rocksIterator.seek(key1Bytes.get());
+ expect(rocksIterator.isValid())
+ .andReturn(true)
+ .andReturn(true)
+ .andReturn(false);
+ expect(rocksIterator.key())
+ .andReturn(key2Bytes.get())
+ .andReturn(key3Bytes.get());
+ expect(rocksIterator.value()).andReturn(valueBytes).times(2);
+ rocksIterator.next();
+ expectLastCall().times(2);
+ replay(rocksIterator);
+ final RocksDBRangeIterator rocksDBRangeIterator = new RocksDBRangeIterator(
+ storeName,
+ rocksIterator,
+ Collections.emptySet(),
+ key1Bytes,
+ key3Bytes,
+ true,
+ true
+ );
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.peekNextKey(), is(key2Bytes));
+ assertThat(rocksDBRangeIterator.peekNextKey(), is(key2Bytes));
+ assertThat(rocksDBRangeIterator.next().key, is(key2Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.peekNextKey(), is(key3Bytes));
+ assertThat(rocksDBRangeIterator.peekNextKey(), is(key3Bytes));
+ assertThat(rocksDBRangeIterator.next().key, is(key3Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(false));
+ assertThrows(NoSuchElementException.class, rocksDBRangeIterator::peekNextKey);
+ verify(rocksIterator);
+ }
+
+ @Test
+ public void shouldReturnTheCurrentKeyOnInvokingPeekNextKeyInReverseDirection() {
+ final RocksIterator rocksIterator = mock(RocksIterator.class);
+ final Bytes toBytes = Bytes.increment(key4Bytes);
+ rocksIterator.seekForPrev(toBytes.get());
+ expect(rocksIterator.isValid())
+ .andReturn(true)
+ .andReturn(true)
+ .andReturn(false);
+ expect(rocksIterator.key())
+ .andReturn(key4Bytes.get())
+ .andReturn(key3Bytes.get());
+ expect(rocksIterator.value()).andReturn(valueBytes).times(2);
+ rocksIterator.prev();
+ expectLastCall().times(2);
+ replay(rocksIterator);
+ final RocksDBRangeIterator rocksDBRangeIterator = new RocksDBRangeIterator(
+ storeName,
+ rocksIterator,
+ Collections.emptySet(),
+ key3Bytes,
+ toBytes,
+ false,
+ true
+ );
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.peekNextKey(), is(key4Bytes));
+ assertThat(rocksDBRangeIterator.peekNextKey(), is(key4Bytes));
+ assertThat(rocksDBRangeIterator.next().key, is(key4Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.peekNextKey(), is(key3Bytes));
+ assertThat(rocksDBRangeIterator.peekNextKey(), is(key3Bytes));
+ assertThat(rocksDBRangeIterator.next().key, is(key3Bytes));
+ assertThat(rocksDBRangeIterator.hasNext(), is(false));
+ assertThrows(NoSuchElementException.class, rocksDBRangeIterator::peekNextKey);
+ verify(rocksIterator);
+ }
+
+ @Test
+ public void shouldCloseIterator() {
+ final RocksIterator rocksIterator = mock(RocksIterator.class);
+ rocksIterator.seek(key1Bytes.get());
+ rocksIterator.close();
+ expectLastCall().times(1);
+ replay(rocksIterator);
+ final RocksDBRangeIterator rocksDBRangeIterator = new RocksDBRangeIterator(
+ storeName,
+ rocksIterator,
+ Collections.emptySet(),
+ key1Bytes,
+ key2Bytes,
+ true,
+ true
+ );
+ rocksDBRangeIterator.close();
+ verify(rocksIterator);
+ }
+
+ @Test
+ public void shouldReturnNextKeyValueMatchingPrefix() {
+ final RocksIterator rocksIterator = mock(RocksIterator.class);
+ final Bytes prefixKey1 = Bytes.wrap("prefix-1".getBytes());
+ final Bytes prefixKey2 = Bytes.wrap("prefix-2".getBytes());
+ final Bytes prefix = Bytes.wrap("prefix".getBytes());
+ final Bytes toBytes = Bytes.increment(prefix);
+ rocksIterator.seek(prefix.get());
+ expect(rocksIterator.isValid())
+ .andReturn(true)
+ .andReturn(true)
+ .andReturn(false);
+ expect(rocksIterator.key())
+ .andReturn(prefixKey1.get())
+ .andReturn(prefixKey2.get());
+ expect(rocksIterator.value()).andReturn(valueBytes).times(2);
+ rocksIterator.next();
+ expectLastCall().times(2);
+ replay(rocksIterator);
+ final RocksDBRangeIterator rocksDBRangeIterator = new RocksDBRangeIterator(
+ storeName,
+ rocksIterator,
+ Collections.emptySet(),
+ prefix,
+ toBytes,
+ true,
+ false
+ );
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(prefixKey1));
+ assertThat(rocksDBRangeIterator.hasNext(), is(true));
+ assertThat(rocksDBRangeIterator.next().key, is(prefixKey2));
+ assertThat(rocksDBRangeIterator.hasNext(), is(false));
+ verify(rocksIterator);
+ }
Review comment:
@cadonna , added this test.
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