Examples of org.apache.cassandra.db.ColumnFamilyStore$Flush

org.apache.cassandra.db.ColumnFamilyStore
Should only be constructed/used from switchMemtable() or truncate(), with ownership of the DataTracker monitor. In the constructor the current memtable(s) are swapped, and a barrier on outstanding writes is issued; when run by the flushWriter the barrier is waited on to ensure all outstanding writes have completed before all memtables are immediately written, and the CL is either immediately marked clean or, if there are custom secondary indexes, the post flush clean up is left to update those indexes and mark the CL clean

            {
                /* Don't service reads! */
                throw new RuntimeException("Cannot service reads while bootstrapping!");
            }
            RangeSliceCommand command = RangeSliceCommand.read(message);
            ColumnFamilyStore cfs = Table.open(command.keyspace).getColumnFamilyStore(command.column_family);
            RangeSliceReply reply = new RangeSliceReply(cfs.getRangeSlice(command.super_column,
                                                                          command.range,
                                                                          command.max_keys,
                                                                          QueryFilter.getFilter(command.predicate, cfs.getComparator())));
            Message response = reply.getReply(message);
            if (logger.isDebugEnabled())
                logger.debug("Sending " + reply+ " to " + message.getMessageId() + "@" + message.getFrom());
            MessagingService.instance.sendOneWay(response, message.getFrom());
        }

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        // 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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        // 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);
        }
        FBUtilities.sortSampledKeys(keys, range);

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    public void beforeApplyModels()
    {
        if (clientMode)
            return;
        ColumnFamilyStore cfs = Table.open(metadata.tableName).getColumnFamilyStore(metadata.cfName);
        cfs.snapshot(Table.getTimestampedSnapshotName(null));
    }

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        DatabaseDescriptor.setTableDefinition(null, newVersion);


        if (!clientMode)
        {
            Table table = Table.open(metadata.tableName);
            ColumnFamilyStore oldCfs = table.getColumnFamilyStore(metadata.cfName);
            oldCfs.reload();
        }
    }

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    public void testOneRow() throws IOException, ExecutionException, InterruptedException
    {
        CompactionManager.instance.disableAutoCompaction();


        Table table = Table.open("Keyspace1");
        ColumnFamilyStore cfs = table.getColumnFamilyStore("Standard1");


        ByteBuffer key = ByteBufferUtil.bytes("k");
        RowMutation rm = new RowMutation("Keyspace1", key);
        rm.add(new QueryPath("Standard1", null, ByteBufferUtil.bytes("c")), ByteBufferUtil.EMPTY_BYTE_BUFFER, 0);
        rm.apply();
        cfs.forceBlockingFlush();


        assertBytes(cfs, Integer.MAX_VALUE, true);
    }

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    public void testOneRowTwoColumns() throws IOException, ExecutionException, InterruptedException
    {
        CompactionManager.instance.disableAutoCompaction();


        Table table = Table.open("Keyspace1");
        ColumnFamilyStore cfs = table.getColumnFamilyStore("Standard1");


        ByteBuffer key =ByteBuffer.wrap( "k".getBytes() );
        RowMutation rm = new RowMutation("Keyspace1", key);
        rm.add(new QueryPath("Standard1", null, ByteBufferUtil.bytes("c")), ByteBufferUtil.EMPTY_BYTE_BUFFER, 0);
        rm.add(new QueryPath("Standard1", null, ByteBufferUtil.bytes("d")), ByteBufferUtil.EMPTY_BYTE_BUFFER, 0);
        rm.apply();
        cfs.forceBlockingFlush();


        assertBytes(cfs, Integer.MAX_VALUE, true);
    }

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    public void testTwoRows() throws IOException, ExecutionException, InterruptedException
    {
        CompactionManager.instance.disableAutoCompaction();


        Table table = Table.open("Keyspace1");
        ColumnFamilyStore cfs = table.getColumnFamilyStore("Standard1");


        ByteBuffer key = ByteBufferUtil.bytes("k");
        RowMutation rm = new RowMutation("Keyspace1", key);
        rm.add(new QueryPath("Standard1", null, ByteBufferUtil.bytes("c")), ByteBufferUtil.EMPTY_BYTE_BUFFER, 0);
        rm.apply();
        cfs.forceBlockingFlush();


        rm.apply();
        cfs.forceBlockingFlush();


        assertBytes(cfs, Integer.MAX_VALUE, true);
    }

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    public void testTwoRowsTwoColumns() throws IOException, ExecutionException, InterruptedException
    {
        CompactionManager.instance.disableAutoCompaction();


        Table table = Table.open("Keyspace1");
        ColumnFamilyStore cfs = table.getColumnFamilyStore("Standard1");


        ByteBuffer key = ByteBufferUtil.bytes("k");
        RowMutation rm = new RowMutation("Keyspace1", key);
        rm.add(new QueryPath("Standard1", null, ByteBufferUtil.bytes("c")), ByteBufferUtil.EMPTY_BYTE_BUFFER, 0);
        rm.add(new QueryPath("Standard1", null, ByteBufferUtil.bytes("d")), ByteBufferUtil.EMPTY_BYTE_BUFFER, 0);
        rm.apply();
        cfs.forceBlockingFlush();


        rm.apply();
        cfs.forceBlockingFlush();


        assertBytes(cfs, Integer.MAX_VALUE, true);
    }

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    public void testManyRows() throws IOException, ExecutionException, InterruptedException
    {
        CompactionManager.instance.disableAutoCompaction();


        Table table = Table.open("Keyspace1");
        ColumnFamilyStore cfs = table.getColumnFamilyStore("Standard1");


        final int ROWS_PER_SSTABLE = 10;
        for (int j = 0; j < (DatabaseDescriptor.getIndexInterval() * 3) / ROWS_PER_SSTABLE; j++) {
            for (int i = 0; i < ROWS_PER_SSTABLE; i++) {
                ByteBuffer key = ByteBuffer.wrap(String.valueOf(i % 2).getBytes());
                RowMutation rm = new RowMutation("Keyspace1", key);
                rm.add(new QueryPath("Standard1", null, ByteBuffer.wrap(String.valueOf(i / 2).getBytes())), ByteBufferUtil.EMPTY_BYTE_BUFFER, j * ROWS_PER_SSTABLE + i);
                rm.apply();
            }
            cfs.forceBlockingFlush();
        }


        assertBytes(cfs, Integer.MAX_VALUE, true);
    }

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