Examples with OpOrder org.apache.cassandra.utils.concurrent.OpOrder used on opensource projects

Example 1 with OpOrder

use of org.apache.cassandra.utils.concurrent.OpOrder in project cassandra by apache.

the class CellSpecTest method data.

@Parameterized.Parameters(name = "{0}")
public static Collection<Object[]> data() {
    TableMetadata table = TableMetadata.builder("testing", "testing").addPartitionKeyColumn("pk", BytesType.instance).build();
    byte[] rawBytes = { 0, 1, 2, 3, 4, 5, 6 };
    ByteBuffer bbBytes = ByteBuffer.wrap(rawBytes);
    NativePool pool = new NativePool(1024, 1024, 1, () -> ImmediateFuture.success(true));
    NativeAllocator allocator = pool.newAllocator(null);
    OpOrder order = new OpOrder();
    List<Cell<?>> tests = new ArrayList<>();
    BiConsumer<ColumnMetadata, CellPath> fn = (column, path) -> {
        tests.add(new ArrayCell(column, 1234, 1, 1, rawBytes, path));
        tests.add(new BufferCell(column, 1234, 1, 1, bbBytes, path));
        tests.add(new NativeCell(allocator, order.getCurrent(), column, 1234, 1, 1, bbBytes, path));
    };
    // simple
    fn.accept(ColumnMetadata.regularColumn(table, bytes("simple"), BytesType.instance), null);
    // complex
    // seems NativeCell does not allow CellPath.TOP, or CellPath.BOTTOM
    fn.accept(ColumnMetadata.regularColumn(table, bytes("complex"), ListType.getInstance(BytesType.instance, true)), CellPath.create(bytes(UUIDGen.getTimeUUID())));
    return tests.stream().map(a -> new Object[] { a.getClass().getSimpleName() + ":" + (a.path() == null ? "simple" : "complex"), a }).collect(Collectors.toList());
}

Example 2 with OpOrder

use of org.apache.cassandra.utils.concurrent.OpOrder in project cassandra by apache.

the class Memtable method estimateRowOverhead.

private static int estimateRowOverhead(final int count) {
    // calculate row overhead
    try (final OpOrder.Group group = new OpOrder().start()) {
        int rowOverhead;
        MemtableAllocator allocator = MEMORY_POOL.newAllocator(null);
        ConcurrentNavigableMap<PartitionPosition, Object> partitions = new ConcurrentSkipListMap<>();
        final Object val = new Object();
        for (int i = 0; i < count; i++) partitions.put(allocator.clone(new BufferDecoratedKey(new LongToken(i), ByteBufferUtil.EMPTY_BYTE_BUFFER), group), val);
        double avgSize = ObjectSizes.measureDeep(partitions) / (double) count;
        rowOverhead = (int) ((avgSize - Math.floor(avgSize)) < 0.05 ? Math.floor(avgSize) : Math.ceil(avgSize));
        rowOverhead -= ObjectSizes.measureDeep(new LongToken(0));
        rowOverhead += AtomicBTreePartition.EMPTY_SIZE;
        rowOverhead += AbstractBTreePartition.HOLDER_UNSHARED_HEAP_SIZE;
        allocator.setDiscarding();
        allocator.setDiscarded();
        return rowOverhead;
    }
}

Example 3 with OpOrder

use of org.apache.cassandra.utils.concurrent.OpOrder in project cassandra by apache.

the class ClusteringHeapSizeTest method data.

@Parameterized.Parameters(name = "{0}")
public static Collection<Object[]> data() {
    byte[] rawBytes = { 0, 1, 2, 3, 4, 5, 6 };
    NativePool pool = new NativePool(1024, 1024, 1, () -> ImmediateFuture.success(true));
    OpOrder order = new OpOrder();
    ArrayClustering array = ArrayClustering.make(rawBytes);
    BufferClustering buffer = BufferClustering.make(ByteBuffer.wrap(rawBytes));
    return Arrays.asList(new Object[][] { { array }, { buffer }, { new NativeClustering(pool.newAllocator(null), order.getCurrent(), array) } });
}

Example 4 with OpOrder

use of org.apache.cassandra.utils.concurrent.OpOrder in project cassandra by apache.

the class NativeAllocatorTest method setUp.

@Before
public void setUp() {
    exec = Executors.newScheduledThreadPool(2);
    order = new OpOrder();
    group = order.start();
    canClean = new CountDownLatch(1);
    isClean = new CountDownLatch(1);
    allocatorRef = new AtomicReference<>();
    barrier = new AtomicReference<>();
    pool = new NativePool(1, 100, 0.75f, () -> {
        try {
            canClean.await();
        } catch (InterruptedException e) {
            throw new AssertionError();
        }
        if (isClean.getCount() > 0) {
            allocatorRef.get().offHeap().released(80);
            isClean.countDown();
        }
        return ImmediateFuture.success(true);
    });
    allocator = new NativeAllocator(pool);
    allocatorRef.set(allocator);
    markBlocking = () -> {
        barrier.set(order.newBarrier());
        barrier.get().issue();
        barrier.get().markBlocking();
    };
}