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[HUDI-2102] Support hilbert curve for hudi (#3952)

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Co-authored-by: Y Ethan Guo <ethan.guoyihua@gmail.com>
This commit is contained in:
xiarixiaoyao
2021-11-27 15:20:19 +08:00
committed by GitHub
parent 2c7656c35f
commit 780a2ac5b2
18 changed files with 1015 additions and 30 deletions
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38
hudi-client/hudi-client-common/src/test/java/org/apache/hudi/optimize/TestHilbertCurveUtils.java Normal file
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@@ -0,0 +1,38 @@
/*
* 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.hudi.optimize;
import org.davidmoten.hilbert.HilbertCurve;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
public class TestHilbertCurveUtils {
private static final HilbertCurve INSTANCE = HilbertCurve.bits(5).dimensions(2);
@Test
public void testIndex() {
long[] t = {1, 2};
assertEquals(13, INSTANCE.index(t).intValue());
long[] t1 = {0, 16};
assertEquals(256, INSTANCE.index(t1).intValue());
}
}

25
hudi-client/hudi-client-common/src/test/java/org/apache/hudi/optimize/TestZOrderingUtil.java
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@@ -126,4 +126,29 @@ public class TestZOrderingUtil {
this.originValue = originValue;
}
}
@Test
public void testConvertBytesToLong() {
long[] tests = new long[] {Long.MIN_VALUE, -1L, 0, 1L, Long.MAX_VALUE};
for (int i = 0; i < tests.length; i++) {
assertEquals(ZOrderingUtil.convertBytesToLong(convertLongToBytes(tests[i])), tests[i]);
}
}
@Test
public void testConvertBytesToLongWithPadding() {
byte[] bytes = new byte[2];
bytes[0] = 2;
bytes[1] = 127;
assertEquals(ZOrderingUtil.convertBytesToLong(bytes), 2 * 256 + 127);
}
private byte[] convertLongToBytes(long num) {
byte[] byteNum = new byte[8];
for (int i = 0; i < 8; i++) {
int offset = 64 - (i + 1) * 8;
byteNum[i] = (byte) ((num >> offset) & 0xff);
}
return byteNum;
}
}