Examples of MemoryChunk

Examples of org.apache.phoenix.memory.MemoryManager.MemoryChunk

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    }
   
    public ServerCache addServerCache(ScanRanges keyRanges, final ImmutableBytesWritable cachePtr, final ServerCacheFactory cacheFactory, final TableRef cacheUsingTableRef) throws SQLException {
        ConnectionQueryServices services = connection.getQueryServices();
        MemoryChunk chunk = services.getMemoryManager().allocate(cachePtr.getLength());
        List<Closeable> closeables = new ArrayList<Closeable>();
        closeables.add(chunk);
        ServerCache hashCacheSpec = null;
        SQLException firstException = null;
        final byte[] cacheId = generateId();
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Examples of org.apache.phoenix.memory.MemoryManager.MemoryChunk

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    }
   
    public ServerCache addServerCache(ScanRanges keyRanges, final ImmutableBytesWritable cachePtr, final ServerCacheFactory cacheFactory, final TableRef cacheUsingTableRef) throws SQLException {
        ConnectionQueryServices services = connection.getQueryServices();
        MemoryChunk chunk = services.getMemoryManager().allocate(cachePtr.getLength());
        List<Closeable> closeables = new ArrayList<Closeable>();
        closeables.add(chunk);
        ServerCache hashCacheSpec = null;
        SQLException firstException = null;
        final byte[] cacheId = generateId();
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Examples of org.apache.phoenix.memory.MemoryManager.MemoryChunk

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     */
    private RegionScanner getTopNScanner(final ObserverContext<RegionCoprocessorEnvironment> c, final RegionScanner s, final OrderedResultIterator iterator, ImmutableBytesWritable tenantId) throws Throwable {
        final Tuple firstTuple;
        TenantCache tenantCache = GlobalCache.getTenantCache(c.getEnvironment(), tenantId);
        long estSize = iterator.getEstimatedByteSize();
        final MemoryChunk chunk = tenantCache.getMemoryManager().allocate(estSize);
        final HRegion region = c.getEnvironment().getRegion();
        region.startRegionOperation();
        try {
            // Once we return from the first call to next, we've run through and cached
            // the topN rows, so we no longer need to start/stop a region operation.
            firstTuple = iterator.next();
            // Now that the topN are cached, we can resize based on the real size
            long actualSize = iterator.getByteSize();
            chunk.resize(actualSize);
        } catch (Throwable t) {
            ServerUtil.throwIOException(region.getRegionNameAsString(), t);
            return null;
        } finally {
            region.closeRegionOperation();
        }
        return new BaseRegionScanner() {
            private Tuple tuple = firstTuple;
           
            @Override
            public boolean isFilterDone() {
                return tuple == null;
            }

            @Override
            public HRegionInfo getRegionInfo() {
                return s.getRegionInfo();
            }

            @Override
            public boolean next(List<Cell> results) throws IOException {
                try {
                    if (isFilterDone()) {
                        return false;
                    }
                   
                    for (int i = 0; i < tuple.size(); i++) {
                        results.add(tuple.getValue(i));
                    }
                   
                    tuple = iterator.next();
                    return !isFilterDone();
                } catch (Throwable t) {
                    ServerUtil.throwIOException(region.getRegionNameAsString(), t);
                    return false;
                }
            }

            @Override
            public void close() throws IOException {
                try {
                    s.close();
                } finally {
                    chunk.close();                }
            }
           
            @Override
            public long getMaxResultSize() {
                return s.getMaxResultSize();
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Examples of org.apache.phoenix.memory.MemoryManager.MemoryChunk

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    * @throws SQLException
    */
    SpoolingResultIterator(ResultIterator scanner, MemoryManager mm, final int thresholdBytes, final long maxSpoolToDisk) throws SQLException {
        boolean success = false;
        boolean usedOnDiskIterator = false;
        final MemoryChunk chunk = mm.allocate(0, thresholdBytes);
        File tempFile = null;
        try {
            // Can't be bigger than int, since it's the max of the above allocation
            int size = (int)chunk.getSize();
            tempFile = File.createTempFile("ResultSpooler",".bin");
            DeferredFileOutputStream spoolTo = new DeferredFileOutputStream(size, tempFile) {
                @Override
                protected void thresholdReached() throws IOException {
                    super.thresholdReached();
                    chunk.close();
                }
            };
            DataOutputStream out = new DataOutputStream(spoolTo);
            final long maxBytesAllowed = maxSpoolToDisk == -1 ?
                Long.MAX_VALUE : thresholdBytes + maxSpoolToDisk;
            long bytesWritten = 0L;
            int maxSize = 0;
            for (Tuple result = scanner.next(); result != null; result = scanner.next()) {
                int length = TupleUtil.write(result, out);
                bytesWritten += length;
                if(bytesWritten > maxBytesAllowed){
                    throw new SpoolTooBigToDiskException("result too big, max allowed(bytes): " + maxBytesAllowed);
                }
                maxSize = Math.max(length, maxSize);
            }
            spoolTo.close();
            if (spoolTo.isInMemory()) {
                byte[] data = spoolTo.getData();
                chunk.resize(data.length);
                spoolFrom = new InMemoryResultIterator(data, chunk);
            } else {
                spoolFrom = new OnDiskResultIterator(maxSize, spoolTo.getFile());
                usedOnDiskIterator = true;
            }
            success = true;
        } catch (IOException e) {
            throw ServerUtil.parseServerException(e);
        } finally {
            try {
                scanner.close();
            } finally {
                try {
                    if (!usedOnDiskIterator) {
                        tempFile.delete();
                    }
                } finally {
                    if (!success) {
                        chunk.close();
                    }
                }
            }
        }
    }
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