Examples of org.apache.cassandra.db.Table$TableMetadataSerializer

org.apache.cassandra.db.Table
Author : Avinash Lakshman ( alakshman@facebook.com) & Prashant Malik ( pmalik@facebook.com )

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

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            // send out read requests
            for (int i = 0; i < commands.size(); i++)
            {
                ReadCommand command = commands.get(i);
                Table table = Table.open(command.getKeyspace());
                assert !command.isDigestQuery();
                logger.trace("Command/ConsistencyLevel is {}/{}", command, consistency_level);


                List<InetAddress> endpoints = getLiveSortedEndpoints(table, command.key);
                CFMetaData cfm = Schema.instance.getCFMetaData(command.getKeyspace(), command.getColumnFamilyName());

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    {
        Tracing.trace("Determining replicas to query");
        logger.trace("Command/ConsistencyLevel is {}/{}", command.toString(), consistency_level);
        long startTime = System.nanoTime();


        Table table = Table.open(command.keyspace);
        List<Row> rows;
        // now scan until we have enough results
        try
        {
            IDiskAtomFilter commandPredicate = command.predicate;

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        protected void runMayThrow()
        {
            logger.trace("LocalReadRunnable reading {}", command);


            Table table = Table.open(command.table);
            Row r = command.getRow(table);
            ReadResponse result = ReadVerbHandler.getResponse(command, r);
            MessagingService.instance().addLatency(FBUtilities.getBroadcastAddress(), System.currentTimeMillis() - start);
            handler.response(result);
        }

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    public double getLoad()
    {
        double bytes = 0;
        for (String tableName : Schema.instance.getTables())
        {
            Table table = Table.open(tableName);
            for (ColumnFamilyStore cfs : table.getColumnFamilyStores())
                bytes += cfs.getLiveDiskSpaceUsed();
        }
        return bytes;
    }

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            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.");


        Table table = getValidTable(tableName);
        if (table.snapshotExists(tag))
            throw new IOException("Snapshot " + tag + " already exists.");


        table.snapshot(tag, columnFamilyName);
    }

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     * @param tableName keyspace
     * @param cfNames CFs
     */
    public Iterable<ColumnFamilyStore> getValidColumnFamilies(boolean allowIndexes, boolean autoAddIndexes, String tableName, String... cfNames) throws IOException
    {
        Table table = getValidTable(tableName);


        if (cfNames.length == 0)
            // all stores are interesting
            return table.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 = table.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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     * @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 table, String cfName, Range<Token> range, int keysPerSplit)
    {
        Table t = Table.open(table);
        ColumnFamilyStore cfs = t.getColumnFamilyStore(cfName);
        List<DecoratedKey> keys = keySamples(Collections.singleton(cfs), range);


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


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

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            {
                CFPair request = this.deserialize(new DataInputStream(buffer));


                // trigger readonly-compaction
                logger.debug("Queueing readonly compaction for request from " + message.getFrom() + " for " + request);
                Table table = Table.open(request.left);
                CompactionManager.instance.submitReadonly(table.getColumnFamilyStore(request.right),
                                                          message.getFrom());
            }
            catch (IOException e)
            {
                throw new IOError(e);

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        for ( String distinctEntry : distinctEntries )
        {
            String tableName;
            String[] pieces = FBUtilities.strip(distinctEntry, "-");
            tableName = pieces[0];
            Table table = Table.open( tableName );


            ColumnFamilyStore cfStore = table.getColumnFamilyStore(pieces[1]);
            if (logger.isDebugEnabled())
              logger.debug("Generating file name for " + distinctEntry + " ...");
            fileNames.put(distinctEntry, cfStore.getTempSSTableFileName());
        }

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