Examples of org.voltdb.TheHashinator

org.voltdb.TheHashinator
Class that maps object values to partitions. It's rather simple really. It'll get more complicated if you give it time.

    @Test
    public void testExpectNonZeroHash() throws Exception {
        int partitionCount = 3;
        byte[] configBytes;
        HashinatorLite h1;
        TheHashinator h2;


        configBytes = LegacyHashinator.getConfigureBytes(partitionCount);
        h1 = new HashinatorLite(partitionCount);
        h2 = TheHashinator.getHashinator(HashinatorType.LEGACY.hashinatorClass, configBytes, false);
        testExpectNonZeroHash(h1, h2, partitionCount);

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    @Test
    public void testSameLongHash1() throws Exception {
        int partitionCount = 2;
        byte[] configBytes;
        HashinatorLite h1;
        TheHashinator h2;


        configBytes = LegacyHashinator.getConfigureBytes(partitionCount);
        h1 = new HashinatorLite(partitionCount);
        h2 = TheHashinator.getHashinator(HashinatorType.LEGACY.hashinatorClass, configBytes, false);
        testSameLongHash1(h1, h2, partitionCount);

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    @Test
    public void testSizeChanges() {
        int partitionCount;
        byte[] configBytes;
        HashinatorLite h1;
        TheHashinator h2;


        // try with lots of partition counts
        for (partitionCount = 1; partitionCount <= 11; partitionCount++) {
            configBytes = LegacyHashinator.getConfigureBytes(partitionCount);
            h1 = new HashinatorLite(partitionCount);

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    @Test
    public void testEdgeCases() throws Exception {
        int partitionCount;
        byte[] configBytes;
        HashinatorLite h1;
        TheHashinator h2;


        // try with lots of partition counts
        for (int i = 0; i < 50; i++) {
            partitionCount = r.nextInt(1000) + 1;

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    @Test
    public void testSameLongHash() throws Exception {
        int partitionCount;
        byte[] configBytes;
        HashinatorLite h1;
        TheHashinator h2;


        // try with lots of partition counts
        for (int i = 0; i < 50; i++) {
            partitionCount = r.nextInt(1000) + 1;

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    @Test
    public void testSameStringHash() throws Exception {
        int partitionCount;
        byte[] configBytes;
        HashinatorLite h1;
        TheHashinator h2;


        // try with lots of partition counts
        for (int i = 0; i < 50; i++) {
            partitionCount = r.nextInt(1000) + 1;

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    @Test
    public void testNulls() throws Exception {
        int partitionCount = 3;
        byte[] configBytes;
        HashinatorLite h1;
        TheHashinator h2;


        configBytes = LegacyHashinator.getConfigureBytes(partitionCount);
        h1 = new HashinatorLite(partitionCount);
        h2 = TheHashinator.getHashinator(HashinatorType.LEGACY.hashinatorClass, configBytes, false);
        testNulls(h1, h2, partitionCount);

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    @Test
    public void testSameBytesHash() throws Exception {
        int partitionCount;
        byte[] configBytes;
        HashinatorLite h1;
        TheHashinator h2;


        // try with lots of partition counts
        for (int i = 0; i < 50; i++) {
            partitionCount = r.nextInt(1000) + 1;

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org.apache.hadoop_voltpatches.util.PureJavaCrc32C

org.voltdb.catalog.Cluster

org.voltdb.client.TestHashinatorLite

org.voltdb.dtxn.UndoAction

org.voltdb.sysprocs.saverestore.HashinatorSnapshotData

java.nio.ByteBuffer

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