Package org.apache.cassandra.dht

Examples of org.apache.cassandra.dht.Token

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        else
        {
            // Exit now if we can't fulfill the CL here instead of forwarding to the leader replica
            String table = cm.getTable();
            AbstractReplicationStrategy rs = Table.open(table).getReplicationStrategy();
            Token tk = StorageService.getPartitioner().getToken(cm.key());
            List<InetAddress> naturalEndpoints = StorageService.instance.getNaturalEndpoints(table, tk);
            Collection<InetAddress> pendingEndpoints = StorageService.instance.getTokenMetadata().pendingEndpointsFor(tk, table);

            rs.getWriteResponseHandler(naturalEndpoints, pendingEndpoints, cm.consistency(), null, WriteType.COUNTER).assureSufficientLiveNodes();
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             *     split remainder to A=[DK(10, 'foo'), 15] and B=(15, DK(20, 'bar')]. But since we can't mix
             *     tokens and keys at the same time in a range, we uses 15.upperBoundKey() to have A include all
             *     keys having 15 as token and B include none of those (since that is what our node owns).
             * asSplitValue() abstracts that choice.
             */
            Token upperBoundToken = ringIter.next();
            T upperBound = (T)upperBoundToken.upperBound(queryRange.left.getClass());
            if (!remainder.left.equals(upperBound) && !remainder.contains(upperBound))
                // no more splits
                break;
            Pair<AbstractBounds<T>,AbstractBounds<T>> splits = remainder.split(upperBound);
            if (splits == null)
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            catch (CharacterCodingException e)
            {
                throw new RuntimeException(e);
            }
            // serialize the old token as a collection of (one )tokens.
            Token token = StorageService.getPartitioner().getTokenFactory().fromByteArray(oldColumns.next().value());
            String tokenBytes = tokensAsSet(Collections.singleton(token));
            // (assume that any node getting upgraded was bootstrapped, since that was stored in a separate row for no particular reason)
            String req = "INSERT INTO system.%s (key, cluster_name, tokens, bootstrapped) VALUES ('%s', '%s', %s, '%s')";
            processInternal(String.format(req, LOCAL_CF, LOCAL_KEY, clusterName, tokenBytes, BootstrapState.COMPLETED.name()));
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     * @param schemaCfName The name of the ColumnFamily responsible for part of the schema (keyspace, ColumnFamily, columns)
     * @return low-level schema representation (each row represents individual Keyspace or ColumnFamily)
     */
    public static List<Row> serializedSchema(String schemaCfName)
    {
        Token minToken = StorageService.getPartitioner().getMinimumToken();

        return schemaCFS(schemaCfName).getRangeSlice(null,
                                                     new Range<RowPosition>(minToken.minKeyBound(),
                                                                            minToken.maxKeyBound()),
                                                     Integer.MAX_VALUE,
                                                     new IdentityQueryFilter(),
                                                     null);
    }
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        // divide the queryRange into pieces delimited by the ring and minimum tokens
        Iterator<Token> ringIter = TokenMetadata.ringIterator(tokenMetadata.sortedTokens(), queryRange.left, true);
        AbstractBounds remainder = queryRange;
        while (ringIter.hasNext())
        {
            Token token = ringIter.next();
            if (remainder == null || !(remainder.left.equals(token) || remainder.contains(token)))
                // no more splits
                break;
            Pair<AbstractBounds,AbstractBounds> splits = remainder.split(token);
            if (splits.left != null)
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    public static List<Row> scan(final String keyspace, String column_family, IndexClause index_clause, SlicePredicate column_predicate, ConsistencyLevel consistency_level)
    throws IOException, TimeoutException, UnavailableException
    {
        IPartitioner p = StorageService.getPartitioner();

        Token leftToken = index_clause.start_key == null ? p.getMinimumToken() : p.getToken(index_clause.start_key);
        List<AbstractBounds> ranges = getRestrictedRanges(new Bounds(leftToken, p.getMinimumToken()));
        logger.debug("scan ranges are {}", StringUtils.join(ranges, ","));

        // now scan until we have enough results
        List<Row> rows = new ArrayList<Row>(index_clause.count);
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     * @param schemaCfName The name of the ColumnFamily responsible for part of the schema (keyspace, ColumnFamily, columns)
     * @return low-level schema representation (each row represents individual Keyspace or ColumnFamily)
     */
    public static List<Row> serializedSchema(String schemaCfName)
    {
        Token minToken = StorageService.getPartitioner().getMinimumToken();

        return schemaCFS(schemaCfName).getRangeSlice(null,
                                                     new Range<RowPosition>(minToken.minKeyBound(),
                                                                            minToken.maxKeyBound()),
                                                     Integer.MAX_VALUE,
                                                     new IdentityQueryFilter(),
                                                     null);
    }
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            throw new InvalidRequestException("start token + end key is not a supported key range");

        if (range.start_key != null && range.end_key != null)
        {
            IPartitioner p = StorageService.getPartitioner();
            Token startToken = p.getToken(range.start_key);
            Token endToken = p.getToken(range.end_key);
            if (startToken.compareTo(endToken) > 0 && !endToken.isMinimum(p))
            {
                if (p instanceof RandomPartitioner)
                    throw new InvalidRequestException("start key's md5 sorts after end key's md5.  this is not allowed; you probably should not specify end key at all, under RandomPartitioner");
                else
                    throw new InvalidRequestException("start key must sort before (or equal to) finish key in your partitioner!");
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    public static void sortSampledKeys(List<DecoratedKey> keys, Range range)
    {
        if (range.left.compareTo(range.right) >= 0)
        {
            // range wraps.  have to be careful that we sort in the same order as the range to find the right midpoint.
            final Token right = range.right;
            Comparator<DecoratedKey> comparator = new Comparator<DecoratedKey>()
            {
                public int compare(DecoratedKey o1, DecoratedKey o2)
                {
                    if ((right.compareTo(o1.token) < 0 && right.compareTo(o2.token) < 0)
                        || (right.compareTo(o1.token) > 0 && right.compareTo(o2.token) > 0))
                    {
                        // both tokens are on the same side of the wrap point
                        return o1.compareTo(o2);
                    }
                    return -o1.compareTo(o2);
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        ByteBuffer finishKey = (select.getKeyFinish() != null)
                                ? select.getKeyFinish().getByteBuffer(keyType)
                                : (new Term()).getByteBuffer();

        Token startToken = p.getToken(startKey), finishToken = p.getToken(finishKey);
        if (startToken.compareTo(finishToken) > 0 && !finishToken.equals(p.getMinimumToken()))
        {
            if (p instanceof RandomPartitioner)
                throw new InvalidRequestException("Start key's md5 sorts after end key's md5. This is not allowed; you probably should not specify end key at all, under RandomPartitioner");
            else
                throw new InvalidRequestException("Start key must sort before (or equal to) finish key in your partitioner!");
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Related Classes of org.apache.cassandra.dht.Token

  • com.stratio.cassandra.index.FullKeyMapper
  • com.stratio.cassandra.index.RowComparatorNatural
  • com.stratio.cassandra.index.TokenMapperGenericSorter
  • org.apache.cassandra.avro.AvroValidation
  • org.apache.cassandra.client.RingCache
  • org.apache.cassandra.cql.QueryProcessor
  • org.apache.cassandra.db.BatchlogManager
  • org.apache.cassandra.db.BatchlogManager$Batch
  • org.apache.cassandra.db.ColumnFamilyStore
  • org.apache.cassandra.db.compaction.LeveledManifest
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