Examples with MemoryBuffer org.apache.hadoop.hive.common.io.encoded.MemoryBuffer used on opensource projects

Example 1 with MemoryBuffer

use of org.apache.hadoop.hive.common.io.encoded.MemoryBuffer in project hive by apache.

the class StreamUtils method createDiskRangeInfo.

/**
   * Converts stream buffers to disk ranges.
   * @param streamBuffer - stream buffer
   * @return - total length of disk ranges
   */
public static DiskRangeInfo createDiskRangeInfo(ColumnStreamData streamBuffer) {
    DiskRangeInfo diskRangeInfo = new DiskRangeInfo(streamBuffer.getIndexBaseOffset());
    // See ctor comment.
    long offset = streamBuffer.getIndexBaseOffset();
    // TODO: we should get rid of this
    for (MemoryBuffer memoryBuffer : streamBuffer.getCacheBuffers()) {
        ByteBuffer buffer = memoryBuffer.getByteBufferDup();
        diskRangeInfo.addDiskRange(new BufferChunk(buffer, offset));
        offset += buffer.remaining();
    }
    return diskRangeInfo;
}

Example 2 with MemoryBuffer

use of org.apache.hadoop.hive.common.io.encoded.MemoryBuffer in project hive by apache.

the class EncodedReaderImpl method copyAndReplaceUncompressedToNonCached.

private static CacheChunk copyAndReplaceUncompressedToNonCached(BufferChunk bc, DataCache cacheWrapper, MemoryBuffer[] singleAlloc) {
    singleAlloc[0] = null;
    cacheWrapper.getAllocator().allocateMultiple(singleAlloc, bc.getLength());
    MemoryBuffer buffer = singleAlloc[0];
    cacheWrapper.reuseBuffer(buffer);
    ByteBuffer dest = buffer.getByteBufferRaw();
    CacheChunk tcc = POOLS.tccPool.take();
    tcc.init(buffer, bc.getOffset(), bc.getEnd());
    copyUncompressedChunk(bc.getChunk(), dest);
    bc.replaceSelfWith(tcc);
    return tcc;
}

Example 3 with MemoryBuffer

use of org.apache.hadoop.hive.common.io.encoded.MemoryBuffer in project hive by apache.

the class EncodedReaderImpl method addOneCompressionBlockByteBuffer.

/**
   * Add one buffer with compressed data the results for addOneCompressionBuffer (see javadoc).
   * @param fullCompressionBlock (fCB) Entire compression block, sliced or copied from disk data.
   * @param isUncompressed Whether the data in the block is uncompressed.
   * @param cbStartOffset Compressed start offset of the fCB.
   * @param cbEndOffset Compressed end offset of the fCB.
   * @param lastChunkLength The number of compressed bytes consumed from last *chunk* into fullCompressionBlock.
   * @param lastChunk
   * @param toDecompress See addOneCompressionBuffer.
   * @param cacheBuffers See addOneCompressionBuffer.
   * @return New cache buffer.
   */
private ProcCacheChunk addOneCompressionBlockByteBuffer(ByteBuffer fullCompressionBlock, boolean isUncompressed, long cbStartOffset, long cbEndOffset, int lastChunkLength, BufferChunk lastChunk, List<ProcCacheChunk> toDecompress, List<MemoryBuffer> cacheBuffers) {
    // Prepare future cache buffer.
    MemoryBuffer futureAlloc = cacheWrapper.getAllocator().createUnallocated();
    // Add it to result in order we are processing.
    cacheBuffers.add(futureAlloc);
    // Add it to the list of work to decompress.
    ProcCacheChunk cc = POOLS.pccPool.take();
    cc.init(cbStartOffset, cbEndOffset, !isUncompressed, fullCompressionBlock, futureAlloc, cacheBuffers.size() - 1);
    toDecompress.add(cc);
    // Adjust the compression block position.
    if (isTracingEnabled) {
        LOG.trace("Adjusting " + lastChunk + " to consume " + lastChunkLength + " compressed bytes");
    }
    lastChunk.getChunk().position(lastChunk.getChunk().position() + lastChunkLength);
    // Before anyone else accesses it, it would have been allocated and decompressed locally.
    if (lastChunk.getChunk().remaining() <= 0) {
        if (isTracingEnabled) {
            LOG.trace("Replacing " + lastChunk + " with " + cc + " in the buffers");
        }
        lastChunk.replaceSelfWith(cc);
    } else {
        if (isTracingEnabled) {
            LOG.trace("Adding " + cc + " before " + lastChunk + " in the buffers");
        }
        lastChunk.insertPartBefore(cc);
    }
    return cc;
}

Example 4 with MemoryBuffer

use of org.apache.hadoop.hive.common.io.encoded.MemoryBuffer in project hive by apache.

the class TestBuddyAllocator method allocateAndUseBuffer.

private void allocateAndUseBuffer(BuddyAllocator a, MemoryBuffer[][] allocs, long[][] testValues, int allocCount, int index, int sizeLog2) throws Exception {
    allocs[index] = new MemoryBuffer[allocCount];
    testValues[index] = new long[allocCount];
    int size = (1 << sizeLog2) - 1;
    try {
        a.allocateMultiple(allocs[index], size);
    } catch (AllocatorOutOfMemoryException ex) {
        LOG.error("Failed to allocate " + allocCount + " of " + size + "; " + a.debugDump());
        throw ex;
    }
    // LOG.info("Allocated " + allocCount + " of " + size + "; " + a.debugDump());
    for (int j = 0; j < allocCount; ++j) {
        MemoryBuffer mem = allocs[index][j];
        long testValue = testValues[index][j] = rdm.nextLong();
        int pos = mem.getByteBufferRaw().position();
        mem.getByteBufferRaw().putLong(pos, testValue);
        int halfLength = mem.getByteBufferRaw().remaining() >> 1;
        if (halfLength + 8 <= mem.getByteBufferRaw().remaining()) {
            mem.getByteBufferRaw().putLong(pos + halfLength, testValue);
        }
    }
}

Example 5 with MemoryBuffer

use of org.apache.hadoop.hive.common.io.encoded.MemoryBuffer 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);
    }
}