Package org.apache.cassandra.dht

Examples of org.apache.cassandra.dht.IPartitioner

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        return open(descriptor, metadata);
    }

    public static SSTableReader open(Descriptor desc, CFMetaData metadata) throws IOException
    {
        IPartitioner p = desc.cfname.contains(".")
                       ? new LocalPartitioner(metadata.getKeyValidator())
                       : StorageService.getPartitioner();
        return open(desc, componentsFor(desc), metadata, p);
    }
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            validateColumns(keyspace, column_parent, predicate.column_names);
    }

    public static void validateKeyRange(String start_key, String end_key, int row_count) throws InvalidRequestException
    {
        IPartitioner p = StorageService.getPartitioner();
        Token startToken = p.decorateKey(start_key).token;
        Token endToken = p.decorateKey(end_key).token;
        if (startToken.compareTo(endToken) > 0 && !endToken.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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     */
    public static synchronized void updateToken(InetAddress ep, Token token)
    {
        if (ep == FBUtilities.getLocalAddress())
            return;
        IPartitioner p = StorageService.getPartitioner();
        ColumnFamily cf = ColumnFamily.create(Table.SYSTEM_TABLE, STATUS_CF);
        cf.addColumn(new Column(p.getTokenFactory().toByteArray(token), ByteBuffer.wrap(ep.getAddress()), System.currentTimeMillis()));
        RowMutation rm = new RowMutation(Table.SYSTEM_TABLE, RING_KEY);
        rm.add(cf);
        try
        {
            rm.apply();
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    /**
     * Remove stored token being used by another node
     */
    public static synchronized void removeToken(Token token)
    {
        IPartitioner p = StorageService.getPartitioner();
        RowMutation rm = new RowMutation(Table.SYSTEM_TABLE, RING_KEY);
        rm.delete(new QueryPath(STATUS_CF, null, p.getTokenFactory().toByteArray(token)), System.currentTimeMillis());
        try
        {
            rm.apply();
        }
        catch (IOException e)
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    /**
     * This method is used to update the System Table with the new token for this node
    */
    public static synchronized void updateToken(Token token)
    {
        IPartitioner p = StorageService.getPartitioner();
        ColumnFamily cf = ColumnFamily.create(Table.SYSTEM_TABLE, STATUS_CF);
        cf.addColumn(new Column(SystemTable.TOKEN, p.getTokenFactory().toByteArray(token), System.currentTimeMillis()));
        RowMutation rm = new RowMutation(Table.SYSTEM_TABLE, LOCATION_KEY);
        rm.add(cf);
        try
        {
            rm.apply();
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     *
     */
    public static HashMap<Token, InetAddress> loadTokens()
    {
        HashMap<Token, InetAddress> tokenMap = new HashMap<Token, InetAddress>();
        IPartitioner p = StorageService.getPartitioner();
        Table table = Table.open(Table.SYSTEM_TABLE);
        QueryFilter filter = QueryFilter.getIdentityFilter(decorate(RING_KEY), new QueryPath(STATUS_CF));
        ColumnFamily cf = table.getColumnFamilyStore(STATUS_CF).getColumnFamily(filter);
        if (cf != null)
        {
            for (IColumn column : cf.getSortedColumns())
            {
                try
                {
                    ByteBuffer v = column.value();
                    byte[] addr = new byte[v.remaining()];
                    ByteBufferUtil.arrayCopy(v, v.position(), addr, 0, v.remaining());
                    tokenMap.put(p.getTokenFactory().fromByteArray(column.name()), InetAddress.getByAddress(addr));
                }
                catch (UnknownHostException e)
                {
                    throw new IOError(e);
                }
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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);
        for (AbstractBounds range : ranges)
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            clearAndLoad(cfs);

        // query using index to see if sstable for secondary index opens
        IndexExpression expr = new IndexExpression(ByteBufferUtil.bytes("birthdate"), IndexOperator.EQ, ByteBufferUtil.bytes(1L));
        List<IndexExpression> clause = Arrays.asList(expr);
        IPartitioner p = StorageService.getPartitioner();
        Range<RowPosition> range = Util.range("", "");
        List<Row> rows = indexedCFS.search(clause, range, 100, new IdentityQueryFilter());
        assert rows.size() == 1;
    }
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        return open(descriptor, metadata);
    }

    public static SSTableReader open(Descriptor desc, CFMetaData metadata) throws IOException
    {
        IPartitioner p = desc.cfname.contains(SECONDARY_INDEX_NAME_SEPARATOR)
                       ? new LocalPartitioner(metadata.getKeyValidator())
                       : StorageService.getPartitioner();
        return open(desc, componentsFor(desc), metadata, p);
    }
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        return keys;
    }

    private void transfer(Table table, SSTableReader sstable) throws Exception
    {
        IPartitioner p = StorageService.getPartitioner();
        List<Range<Token>> ranges = new ArrayList<Range<Token>>();
        ranges.add(new Range<Token>(p.getMinimumToken(), p.getToken(ByteBufferUtil.bytes("key1"))));
        ranges.add(new Range<Token>(p.getToken(ByteBufferUtil.bytes("key2")), p.getMinimumToken()));
        StreamOutSession session = StreamOutSession.create(table.name, LOCAL, (IStreamCallback)null);
        StreamOut.transferSSTables(session, Arrays.asList(sstable), ranges, OperationType.BOOTSTRAP);
        session.await();
    }
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Related Classes of org.apache.cassandra.dht.IPartitioner

  • org.apache.cassandra.avro.AvroValidation
  • org.apache.cassandra.db.BatchlogManager
  • org.apache.cassandra.db.BinaryMemtable
  • org.apache.cassandra.db.CleanupTest
  • org.apache.cassandra.db.ColumnFamilyStore
  • org.apache.cassandra.db.ColumnFamilyStoreTest
  • org.apache.cassandra.db.DBManager
  • org.apache.cassandra.db.HintedHandOffManager
  • org.apache.cassandra.db.Memtable
  • org.apache.cassandra.db.SerializationsTest
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