Package org.apache.cassandra.dht

Examples of org.apache.cassandra.dht.Token

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     * @param searchPosition the position the natural endpoints are requested for
     * @return a copy of the natural endpoints for the given token
     */
    public ArrayList<InetAddress> getNaturalEndpoints(RingPosition searchPosition)
    {
        Token searchToken = searchPosition.getToken();
        Token keyToken = TokenMetadata.firstToken(tokenMetadata.sortedTokens(), searchToken);
        ArrayList<InetAddress> endpoints = getCachedEndpoints(keyToken);
        if (endpoints == null)
        {
            TokenMetadata tokenMetadataClone = tokenMetadata.cloneOnlyTokenMap();
            keyToken = TokenMetadata.firstToken(tokenMetadataClone.sortedTokens(), searchToken);
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     */
    public void unsafeAssassinateEndpoint(String address) throws UnknownHostException
    {
        InetAddress endpoint = InetAddress.getByName(address);
        EndpointState epState = endpointStateMap.get(endpoint);
        Token token = null;
        logger.warn("Assassinating {} via gossip", endpoint);
        if (epState == null)
        {
            epState = new EndpointState(new HeartBeatState((int)((System.currentTimeMillis() + 60000) / 1000), 9999));
        }
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    }

    private static Collection<InetAddress> getWriteEndpoints(String table, ByteBuffer key)
    {
        StorageService ss = StorageService.instance;
        Token tk = StorageService.getPartitioner().getToken(key);
        List<InetAddress> naturalEndpoints = ss.getNaturalEndpoints(table, tk);
        return ss.getTokenMetadata().getWriteEndpoints(tk, table, naturalEndpoints);
    }
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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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            tmd.updateNormalToken(endPointTokens[i], ep);
            hosts.add(ep);
        }
       
        //Add bootstrap node id=6
        Token bsToken = new BigIntegerToken(String.valueOf(25));
        InetAddress bootstrapEndPoint = InetAddress.getByName("127.0.0.6");
        tmd.addBootstrapToken(bsToken, bootstrapEndPoint);
        StorageService.calculatePendingRanges(tmd, strategy);

        for (int i = 0; i < keyTokens.length; i++)
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    throws UnavailableException, OverloadedException, IOException
    {
        String table = mutation.getTable();
        AbstractReplicationStrategy rs = Table.open(table).getReplicationStrategy();

        Token tk = StorageService.getPartitioner().getToken(mutation.key());
        List<InetAddress> naturalEndpoints = StorageService.instance.getNaturalEndpoints(table, tk);
        Collection<InetAddress> pendingEndpoints = StorageService.instance.getTokenMetadata().pendingEndpointsFor(tk, table);

        AbstractWriteResponseHandler responseHandler = rs.getWriteResponseHandler(naturalEndpoints, pendingEndpoints, consistency_level, callback, writeType);
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    // same as above except does not initiate writes (but does perfrom availability checks).
    private static WriteResponseHandlerWrapper wrapResponseHandler(RowMutation mutation, ConsistencyLevel consistency_level, WriteType writeType)
    {
        AbstractReplicationStrategy rs = Table.open(mutation.getTable()).getReplicationStrategy();
        String table = mutation.getTable();
        Token tk = StorageService.getPartitioner().getToken(mutation.key());
        List<InetAddress> naturalEndpoints = StorageService.instance.getNaturalEndpoints(table, tk);
        Collection<InetAddress> pendingEndpoints = StorageService.instance.getTokenMetadata().pendingEndpointsFor(tk, table);
        AbstractWriteResponseHandler responseHandler = rs.getWriteResponseHandler(naturalEndpoints, pendingEndpoints, consistency_level, null, writeType);
        return new WriteResponseHandlerWrapper(responseHandler, mutation);
    }
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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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    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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Related Classes of org.apache.cassandra.dht.Token

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  • 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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