Examples with CacheChunk org.apache.hadoop.hive.ql.io.orc.encoded.CacheChunk used on opensource projects

Example 1 with CacheChunk

use of org.apache.hadoop.hive.ql.io.orc.encoded.CacheChunk in project hive by apache.

the class TestLowLevelCacheImpl method testMTTWithCleanup.

@Test
public void testMTTWithCleanup() {
    final LowLevelCacheImpl cache = new LowLevelCacheImpl(LlapDaemonCacheMetrics.create("test", "1"), new DummyCachePolicy(), new DummyAllocator(), true, 1);
    final long fn1 = 1, fn2 = 2;
    final int offsetsToUse = 8;
    final CountDownLatch cdlIn = new CountDownLatch(4), cdlOut = new CountDownLatch(1);
    final AtomicInteger rdmsDone = new AtomicInteger(0);
    Callable<Long> rdmCall = new Callable<Long>() {

        public Long call() {
            int gets = 0, puts = 0;
            try {
                Random rdm = new Random(1234 + Thread.currentThread().getId());
                syncThreadStart(cdlIn, cdlOut);
                for (int i = 0; i < 20000; ++i) {
                    boolean isGet = rdm.nextBoolean(), isFn1 = rdm.nextBoolean();
                    long fileName = isFn1 ? fn1 : fn2;
                    int fileIndex = isFn1 ? 1 : 2;
                    int count = rdm.nextInt(offsetsToUse);
                    if (isGet) {
                        int[] offsets = new int[count];
                        count = generateOffsets(offsetsToUse, rdm, offsets);
                        CreateHelper list = new CreateHelper();
                        for (int j = 0; i < count; ++i) {
                            list.addOrMerge(offsets[j], offsets[j] + 1, true, false);
                        }
                        DiskRangeList iter = cache.getFileData(fileName, list.get(), 0, testFactory, null, null);
                        int j = -1;
                        while (iter != null) {
                            ++j;
                            if (!(iter instanceof CacheChunk)) {
                                iter = iter.next;
                                continue;
                            }
                            ++gets;
                            LlapDataBuffer result = (LlapDataBuffer) ((CacheChunk) iter).getBuffer();
                            assertEquals(makeFakeArenaIndex(fileIndex, offsets[j]), result.arenaIndex);
                            cache.decRefBuffer(result);
                            iter = iter.next;
                        }
                    } else {
                        DiskRange[] ranges = new DiskRange[count];
                        int[] offsets = new int[count];
                        for (int j = 0; j < count; ++j) {
                            int next = rdm.nextInt(offsetsToUse);
                            ranges[j] = dr(next, next + 1);
                            offsets[j] = next;
                        }
                        MemoryBuffer[] buffers = new MemoryBuffer[count];
                        for (int j = 0; j < offsets.length; ++j) {
                            LlapDataBuffer buf = LowLevelCacheImpl.allocateFake();
                            buf.arenaIndex = makeFakeArenaIndex(fileIndex, offsets[j]);
                            buffers[j] = buf;
                        }
                        long[] mask = cache.putFileData(fileName, ranges, buffers, 0, Priority.NORMAL, null);
                        puts += buffers.length;
                        long maskVal = 0;
                        if (mask != null) {
                            assertEquals(1, mask.length);
                            maskVal = mask[0];
                        }
                        for (int j = 0; j < offsets.length; ++j) {
                            LlapDataBuffer buf = (LlapDataBuffer) (buffers[j]);
                            if ((maskVal & 1) == 1) {
                                assertEquals(makeFakeArenaIndex(fileIndex, offsets[j]), buf.arenaIndex);
                            }
                            maskVal >>= 1;
                            cache.decRefBuffer(buf);
                        }
                    }
                }
            } finally {
                rdmsDone.incrementAndGet();
            }
            return (((long) gets) << 32) | puts;
        }

        private int makeFakeArenaIndex(int fileIndex, long offset) {
            return (int) ((fileIndex << 16) + offset);
        }
    };
    FutureTask<Integer> evictionTask = new FutureTask<Integer>(new Callable<Integer>() {

        public Integer call() {
            boolean isFirstFile = false;
            Random rdm = new Random(1234 + Thread.currentThread().getId());
            int evictions = 0;
            syncThreadStart(cdlIn, cdlOut);
            while (rdmsDone.get() < 3) {
                DiskRangeList head = new DiskRangeList(0, offsetsToUse + 1);
                isFirstFile = !isFirstFile;
                long fileId = isFirstFile ? fn1 : fn2;
                head = cache.getFileData(fileId, head, 0, testFactory, null, null);
                DiskRange[] results = head.listToArray();
                int startIndex = rdm.nextInt(results.length), index = startIndex;
                LlapDataBuffer victim = null;
                do {
                    DiskRange r = results[index];
                    if (r instanceof CacheChunk) {
                        LlapDataBuffer result = (LlapDataBuffer) ((CacheChunk) r).getBuffer();
                        cache.decRefBuffer(result);
                        if (victim == null && result.invalidate()) {
                            ++evictions;
                            victim = result;
                        }
                    }
                    ++index;
                    if (index == results.length)
                        index = 0;
                } while (index != startIndex);
                if (victim == null)
                    continue;
                cache.notifyEvicted(victim);
            }
            return evictions;
        }
    });
    FutureTask<Long> rdmTask1 = new FutureTask<Long>(rdmCall), rdmTask2 = new FutureTask<Long>(rdmCall), rdmTask3 = new FutureTask<Long>(rdmCall);
    Executor threadPool = Executors.newFixedThreadPool(4);
    threadPool.execute(rdmTask1);
    threadPool.execute(rdmTask2);
    threadPool.execute(rdmTask3);
    threadPool.execute(evictionTask);
    try {
        cdlIn.await();
        cdlOut.countDown();
        long result1 = rdmTask1.get(), result2 = rdmTask2.get(), result3 = rdmTask3.get();
        int evictions = evictionTask.get();
        LOG.info("MTT test: task 1: " + descRdmTask(result1) + ", task 2: " + descRdmTask(result2) + ", task 3: " + descRdmTask(result3) + "; " + evictions + " evictions");
    } catch (Throwable t) {
        throw new RuntimeException(t);
    }
}

Example 2 with CacheChunk

use of org.apache.hadoop.hive.ql.io.orc.encoded.CacheChunk in project hive by apache.

the class TestLowLevelCacheImpl method verifyCacheGet.

private void verifyCacheGet(LowLevelCacheImpl cache, long fileId, Object... stuff) {
    CreateHelper list = new CreateHelper();
    DiskRangeList iter = null;
    int intCount = 0, lastInt = -1;
    int resultCount = stuff.length;
    for (Object obj : stuff) {
        if (obj instanceof Integer) {
            --resultCount;
            assertTrue(intCount >= 0);
            if (intCount == 0) {
                lastInt = (Integer) obj;
                intCount = 1;
            } else {
                list.addOrMerge(lastInt, (Integer) obj, true, true);
                intCount = 0;
            }
            continue;
        } else if (intCount >= 0) {
            assertTrue(intCount == 0);
            intCount = -1;
            iter = cache.getFileData(fileId, list.get(), 0, testFactory, null, null);
            assertEquals(resultCount, iter.listSize());
        }
        assertTrue(iter != null);
        if (obj instanceof MemoryBuffer) {
            assertTrue(iter instanceof CacheChunk);
            assertSame(obj, ((CacheChunk) iter).getBuffer());
        } else {
            assertTrue(iter.equals(obj));
        }
        iter = iter.next;
    }
}