Examples of Keyspace

com.fasterxml.clustermate.api.KeySpace
Entity that represents subset of key hashes used for finding nodes that are responsible for handling piece of content with given key hash. Space is defined with a single integer value, length, covering indexes [0, length-1[.
Logically key space is circular, meaning that all {@link KeyRange}s are consecutive by using wrapping at the end of key hash range.
com.netflix.astyanax.Keyspace
Interface providing access to mutate and query columns from a cassandra keyspace. @author elandau
com.twitter.cassie.Keyspace
me.prettyprint.hector.api.Keyspace
@author Ran Tavory
org.apache.cassandra.db.Keyspace
It represents a Keyspace.
org.yosemite.jcsadra.KeySpace

Examples of org.apache.cassandra.db.Keyspace

     * @return list of Token ranges (_not_ keys!) together with estimated key count,
     *      breaking up the data this node is responsible for into pieces of roughly keysPerSplit
     */
    public List<Pair<Range<Token>, Long>> getSplits(String keyspaceName, String cfName, Range<Token> range, int keysPerSplit, CFMetaData metadata)
    {
        Keyspace t = Keyspace.open(keyspaceName);
        ColumnFamilyStore cfs = t.getColumnFamilyStore(cfName);
        List<DecoratedKey> keys = keySamples(Collections.singleton(cfs), range);


        final long totalRowCountEstimate = (keys.size() + 1) * metadata.getIndexInterval();


        // splitCount should be much smaller than number of key samples, to avoid huge sampling error

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Examples of org.apache.cassandra.db.Keyspace

        return callback.getSuccessful() >= requiredParticipants;
    }


    private static void commitPaxos(Commit proposal, ConsistencyLevel consistencyLevel) throws WriteTimeoutException
    {
        Keyspace keyspace = Keyspace.open(proposal.update.metadata().ksName);


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


        AbstractReplicationStrategy rs = keyspace.getReplicationStrategy();
        AbstractWriteResponseHandler responseHandler = rs.getWriteResponseHandler(naturalEndpoints, pendingEndpoints, consistencyLevel, null, WriteType.SIMPLE);


        MessageOut<Commit> message = new MessageOut<Commit>(MessagingService.Verb.PAXOS_COMMIT, proposal, Commit.serializer);
        for (InetAddress destination : Iterables.concat(naturalEndpoints, pendingEndpoints))
        {

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Examples of org.apache.cassandra.db.Keyspace

     * is unclear we want to mix those latencies with read latencies, so this
     * may be a bit involved.
     */
    private static InetAddress findSuitableEndpoint(String keyspaceName, ByteBuffer key, String localDataCenter, ConsistencyLevel cl) throws UnavailableException
    {
        Keyspace keyspace = Keyspace.open(keyspaceName);
        IEndpointSnitch snitch = DatabaseDescriptor.getEndpointSnitch();
        List<InetAddress> endpoints = StorageService.instance.getLiveNaturalEndpoints(keyspace, key);
        if (endpoints.isEmpty())
            // TODO have a way to compute the consistency level
            throw new UnavailableException(cl, cl.blockFor(keyspace), 0);

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Examples of org.apache.cassandra.db.Keyspace

    throws UnavailableException, ReadTimeoutException
    {
        Tracing.trace("Determining replicas to query");
        long startTime = System.nanoTime();


        Keyspace keyspace = Keyspace.open(command.keyspace);
        List<Row> rows;
        // now scan until we have enough results
        try
        {
            int cql3RowCount = 0;

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Examples of org.apache.cassandra.db.Keyspace

            this.handler = handler;
        }


        protected void runMayThrow()
        {
            Keyspace keyspace = Keyspace.open(command.ksName);
            Row r = command.getRow(keyspace);
            ReadResponse result = ReadVerbHandler.getResponse(command, r);
            MessagingService.instance().addLatency(FBUtilities.getBroadcastAddress(), TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - start));
            handler.response(result);
        }

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Examples of org.apache.cassandra.db.Keyspace

    public double getLoad()
    {
        double bytes = 0;
        for (String keyspaceName : Schema.instance.getKeyspaces())
        {
            Keyspace keyspace = Keyspace.open(keyspaceName);
            for (ColumnFamilyStore cfs : keyspace.getColumnFamilyStores())
                bytes += cfs.getLiveDiskSpaceUsed();
        }
        return bytes;
    }

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Examples of org.apache.cassandra.db.Keyspace

            throw new IllegalArgumentException("Cannot take a snapshot of a secondary index by itself. Run snapshot on the column family that owns the index.");


        if (tag == null || tag.equals(""))
            throw new IOException("You must supply a snapshot name.");


        Keyspace keyspace = getValidKeyspace(keyspaceName);
        if (keyspace.snapshotExists(tag))
            throw new IOException("Snapshot " + tag + " already exists.");


        keyspace.snapshot(tag, columnFamilyName);
    }

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Examples of org.apache.cassandra.db.Keyspace

                System.err.println("No valid sstables to split");
                System.exit(1);
            }


            // Do not load sstables since they might be broken
            Keyspace keyspace = Keyspace.openWithoutSSTables(ksName);
            ColumnFamilyStore cfs = keyspace.getColumnFamilyStore(cfName);


            String snapshotName = "pre-split-" + System.currentTimeMillis();


            List<SSTableReader> sstables = new ArrayList<SSTableReader>();
            for (Map.Entry<Descriptor, Set<Component>> fn : parsedFilenames.entrySet())

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Examples of org.apache.cassandra.db.Keyspace

     * @param keyspaceName keyspace
     * @param cfNames CFs
     */
    public Iterable<ColumnFamilyStore> getValidColumnFamilies(boolean allowIndexes, boolean autoAddIndexes, String keyspaceName, String... cfNames) throws IOException
    {
        Keyspace keyspace = getValidKeyspace(keyspaceName);


        if (cfNames.length == 0)
            // all stores are interesting
            return keyspace.getColumnFamilyStores();


        // filter out interesting stores
        Set<ColumnFamilyStore> valid = new HashSet<ColumnFamilyStore>();
        for (String cfName : cfNames)
        {
            //if the CF name is an index, just flush the CF that owns the index
            String baseCfName = cfName;
            String idxName = null;
            if (cfName.contains(".")) // secondary index
            {
                if(!allowIndexes)
                {
                   logger.warn("Operation not allowed on secondary Index column family ({})", cfName);
                    continue;
                }


                String[] parts = cfName.split("\\.", 2);
                baseCfName = parts[0];
                idxName = parts[1];
            }


            ColumnFamilyStore cfStore = keyspace.getColumnFamilyStore(baseCfName);
            if (cfStore == null)
            {
                // this means there was a cf passed in that is not recognized in the keyspace. report it and continue.
                logger.warn(String.format("Invalid column family specified: %s. Proceeding with others.", baseCfName));
                continue;

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Examples of org.apache.cassandra.db.Keyspace

     * @return list of Token ranges (_not_ keys!) together with estimated key count,
     *      breaking up the data this node is responsible for into pieces of roughly keysPerSplit
     */
    public List<Pair<Range<Token>, Long>> getSplits(String keyspaceName, String cfName, Range<Token> range, int keysPerSplit, CFMetaData metadata)
    {
        Keyspace t = Keyspace.open(keyspaceName);
        ColumnFamilyStore cfs = t.getColumnFamilyStore(cfName);
        List<DecoratedKey> keys = keySamples(Collections.singleton(cfs), range);


        final long totalRowCountEstimate = (keys.size() + 1) * metadata.getIndexInterval();


        // splitCount should be much smaller than number of key samples, to avoid huge sampling error

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