Examples of org.apache.cassandra.thrift.KeyRange

org.apache.cassandra.thrift.KeyRange
The semantics of start keys and tokens are slightly different. Keys are start-inclusive; tokens are start-exclusive. Token ranges may also wrap -- that is, the end token may be less than the start one. Thus, a range from keyX to keyX is a one-element range, but a range from tokenY to tokenY is the full ring.


    private static KeyRange keyRangeFromString(String st)
    {
        assert st != null;
        TDeserializer deserializer = new TDeserializer(new TBinaryProtocol.Factory());
        KeyRange keyRange = new KeyRange();
        try
        {
            deserializer.deserialize(keyRange, Hex.hexToBytes(st));
        }
        catch (TException e)

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        List<InputSplit> splits = new ArrayList<InputSplit>();


        try
        {
            List<Future<List<InputSplit>>> splitfutures = new ArrayList<Future<List<InputSplit>>>();
            KeyRange jobKeyRange = ConfigHelper.getInputKeyRange(conf);
            IPartitioner partitioner = null;
            Range jobRange = null;
            if (jobKeyRange != null)
            {
                partitioner = ConfigHelper.getPartitioner(context.getConfiguration());

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        List<InputSplit> splits = new ArrayList<InputSplit>();


        try
        {
            List<Future<List<InputSplit>>> splitfutures = new ArrayList<Future<List<InputSplit>>>();
            KeyRange jobKeyRange = ConfigHelper.getInputKeyRange(conf);
            IPartitioner partitioner = null;
            Range jobRange = null;
            if (jobKeyRange != null)
            {
                partitioner = ConfigHelper.getPartitioner(context.getConfiguration());

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     * Set the KeyRange to limit the rows.
     * @param conf Job configuration you are about to run
     */
    public static void setInputRange(Configuration conf, String startToken, String endToken)
    {
        KeyRange range = new KeyRange().setStart_token(startToken).setEnd_token(endToken);
        conf.set(INPUT_KEYRANGE_CONFIG, keyRangeToString(range));
    }

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    private static KeyRange keyRangeFromString(String st)
    {
        assert st != null;
        TDeserializer deserializer = new TDeserializer(new TBinaryProtocol.Factory());
        KeyRange keyRange = new KeyRange();
        try
        {
            deserializer.deserialize(keyRange, FBUtilities.hexToBytes(st));
        }
        catch (TException e)

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        List<InputSplit> splits = new ArrayList<InputSplit>();


        try
        {
            List<Future<List<InputSplit>>> splitfutures = new ArrayList<Future<List<InputSplit>>>();
            KeyRange jobKeyRange = ConfigHelper.getInputKeyRange(conf);
            Range<Token> jobRange = null;
            if (jobKeyRange != null)
            {
                if (jobKeyRange.start_key == null)
                {

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         String startKey = "";


         // Get the keys in SLICE_SIZE blocks
         int sliceSize = Math.min(SLICE_SIZE, numEntries);
         for (boolean complete = false; !complete;) {
            KeyRange keyRange = new KeyRange(sliceSize);
            keyRange.setStart_token(startKey);
            keyRange.setEnd_token("");
            List<KeySlice> keySlices = cassandraClient.get_range_slices(entryColumnParent,
                     slicePredicate, keyRange, readConsistencyLevel);


            // Cycle through all the keys
            for (KeySlice keySlice : keySlices) {

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                  ByteBufferUtil.EMPTY_BYTE_BUFFER, false, 1));
         String startKey = "";
         boolean complete = false;
         // Get the keys in SLICE_SIZE blocks
         while (!complete) {
            KeyRange keyRange = new KeyRange(SLICE_SIZE);
            keyRange.setStart_token(startKey);
            keyRange.setEnd_token("");
            List<KeySlice> keySlices = cassandraClient.get_range_slices(entryColumnParent,
                     slicePredicate, keyRange, readConsistencyLevel);
            if (keySlices.size() < SLICE_SIZE) {
               complete = true;
            } else {

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                  ByteBufferUtil.EMPTY_BYTE_BUFFER, false, 1));
         String startKey = "";
         boolean complete = false;
         // Get the keys in SLICE_SIZE blocks
         while (!complete) {
            KeyRange keyRange = new KeyRange(SLICE_SIZE);
            keyRange.setStart_token(startKey);
            keyRange.setEnd_token("");
            List<KeySlice> keySlices = cassandraClient.get_range_slices(entryColumnParent,
                     slicePredicate, keyRange, readConsistencyLevel);
            if (keySlices.size() < SLICE_SIZE) {
               complete = true;
            } else {

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        List<InputSplit> splits = new ArrayList<InputSplit>();


        try
        {
            List<Future<List<InputSplit>>> splitfutures = new ArrayList<Future<List<InputSplit>>>();
            KeyRange jobKeyRange = ConfigHelper.getInputKeyRange(conf);
            Range<Token> jobRange = null;
            if (jobKeyRange != null)
            {
                if (jobKeyRange.start_key != null)
                {

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