Examples of org.apache.cassandra.db.Table

org.apache.cassandra.db.Table

     * @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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    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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            logger_.debug("Cleared out snapshot directories");
    }


    public Iterable<ColumnFamilyStore> getValidColumnFamilies(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)
        {
            ColumnFamilyStore cfStore = table.getColumnFamilyStore(cfName);
            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.", cfName));
                continue;

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        List<Token> tokens = new ArrayList<Token>();
        // we use the actual Range token for the first and last brackets of the splits to ensure correctness
        tokens.add(range.left);


        List<DecoratedKey> keys = new ArrayList<DecoratedKey>();
        Table t = Table.open(table);
        ColumnFamilyStore cfs = t.getColumnFamilyStore(cfName);
        for (DecoratedKey sample : cfs.allKeySamples())
        {
            if (range.contains(sample.token))
                keys.add(sample);
        }

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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 IOException("You mus supply a column family name");


        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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        setMode(Mode.DRAINING, "flushing column families", false);
        List<ColumnFamilyStore> cfses = new ArrayList<ColumnFamilyStore>();
        for (String tableName : Schema.instance.getNonSystemTables())
        {
            Table table = Table.open(tableName);
            cfses.addAll(table.getColumnFamilyStores());
        }
        totalCFs = remainingCFs = cfses.size();
        for (ColumnFamilyStore cfs : cfses)
        {
            cfs.forceBlockingFlush();

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            logger_.debug("Cleared out snapshot directories");
    }


    public Iterable<ColumnFamilyStore> getValidColumnFamilies(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)
        {
            ColumnFamilyStore cfStore = table.getColumnFamilyStore(cfName);
            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.", cfName));
                continue;

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    {
        List<Token> tokens = new ArrayList<Token>();
        // we use the actual Range token for the first and last brackets of the splits to ensure correctness
        tokens.add(range.left);


        Table t = Table.open(table);
        ColumnFamilyStore cfs = t.getColumnFamilyStore(cfName);
        List<DecoratedKey> keys = keySamples(Collections.singleton(cfs), range);
        int splits = keys.size() * DatabaseDescriptor.getIndexInterval() / keysPerSplit;


        if (keys.size() >= splits)
        {

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