Examples with PageDataOutput com.facebook.presto.spi.page.PageDataOutput used on opensource projects

Example 1 with PageDataOutput

use of com.facebook.presto.spi.page.PageDataOutput in project presto by prestodb.

the class TempStorageSingleStreamSpiller method writePages.

private void writePages(Iterator<Page> pageIterator) {
    checkState(writable, "Spilling no longer allowed. The spiller has been made non-writable on first read for subsequent reads to be consistent");
    checkState(!committed, "Spilling no longer allowed. Spill file is already committed");
    while (pageIterator.hasNext()) {
        Page page = pageIterator.next();
        spilledPagesInMemorySize += page.getSizeInBytes();
        // page serialization requires  page.getSizeInBytes() + Integer.BYTES to fit in an integer
        splitPage(page, DEFAULT_MAX_PAGE_SIZE_IN_BYTES).stream().map(serde::serialize).forEach(serializedPage -> {
            long pageSize = serializedPage.getSizeInBytes();
            localSpillContext.updateBytes(pageSize);
            spillerStats.addToTotalSpilledBytes(pageSize);
            PageDataOutput pageDataOutput = new PageDataOutput(serializedPage);
            bufferedBytes += toIntExact(pageDataOutput.size());
            bufferedPages.add(pageDataOutput);
            if (bufferedBytes > maxBufferSizeInBytes) {
                flushBufferedPages();
            }
        });
    }
    memoryContext.setBytes(bufferedBytes + dataSink.getRetainedSizeInBytes());
}

Example 2 with PageDataOutput

use of com.facebook.presto.spi.page.PageDataOutput in project presto by prestodb.

the class SpoolingOutputBuffer method flush.

private synchronized void flush() {
    List<DataOutput> dataOutputs = pages.stream().map(PageDataOutput::new).collect(toImmutableList());
    // create a future that will hold the handle
    ListenableFuture<TempStorageHandle> handleFuture = executor.submit(() -> {
        TempDataSink dataSink = tempStorage.create(tempDataOperationContext);
        dataSink.write(dataOutputs);
        return dataSink.commit();
    });
    // store the handleFuture and file information
    long bytes = totalInMemoryBytes.get();
    int pageCount = pages.size();
    HandleInfo handleInfo = new HandleInfo(closedOpen(currentMemorySequenceId.get(), currentMemorySequenceId.get() + pageCount), handleFuture, bytes, pageCount);
    handleInfoQueue.add(handleInfo);
    // update cutoff for file pages
    currentMemorySequenceId.addAndGet(pageCount);
    // clear the pages in memory
    pages.clear();
    // update info about storage
    totalStorageBytesAdded.addAndGet(bytes);
    totalStoragePagesAdded.addAndGet(pageCount);
    totalInMemoryBytes.set(0);
}

Example 3 with PageDataOutput

use of com.facebook.presto.spi.page.PageDataOutput in project presto by prestodb.

the class PageWriter method write.

public void write(SerializedPage page) throws IOException {
    PageDataOutput pageDataOutput = new PageDataOutput(page);
    long writtenSize = pageDataOutput.size();
    if (maxBufferedBytes - bufferedBytes < writtenSize) {
        flushStripe();
    }
    bufferedPages.add(pageDataOutput);
    bufferedBytes += writtenSize;
    retainedBytes += page.getRetainedSizeInBytes();
}

Example 4 with PageDataOutput

use of com.facebook.presto.spi.page.PageDataOutput in project presto by prestodb.

the class TempStorageStandaloneSpiller method spill.

public SerializedStorageHandle spill(Iterator<Page> pageIterator) {
    List<DataOutput> bufferedPages = new ArrayList<>();
    int bufferedBytes = 0;
    IOException ioException = null;
    TempDataSink tempDataSink = null;
    try {
        tempDataSink = tempStorage.create(tempDataOperationContext);
        while (pageIterator.hasNext()) {
            Page page = pageIterator.next();
            List<Page> splitPages = splitPage(page, DEFAULT_MAX_PAGE_SIZE_IN_BYTES);
            for (Page splitPage : splitPages) {
                SerializedPage serializedPage = serde.serialize(splitPage);
                spillerStats.addToTotalSpilledBytes(serializedPage.getSizeInBytes());
                PageDataOutput pageDataOutput = new PageDataOutput(serializedPage);
                bufferedBytes += toIntExact(pageDataOutput.size());
                bufferedPages.add(pageDataOutput);
                if (bufferedBytes > maxBufferSizeInBytes) {
                    flushBufferedPages(tempDataSink, bufferedPages);
                    bufferedBytes = 0;
                }
            }
        }
        // Flush remaining buffered pages
        if (!bufferedPages.isEmpty()) {
            flushBufferedPages(tempDataSink, bufferedPages);
        }
        TempStorageHandle tempStorageHandle = tempDataSink.commit();
        return new SerializedStorageHandle(tempStorage.serializeHandle(tempStorageHandle));
    } catch (IOException e) {
        ioException = e;
        try {
            if (tempDataSink != null) {
                tempDataSink.rollback();
            }
        } catch (IOException exception) {
            if (ioException != exception) {
                ioException.addSuppressed(exception);
            }
        }
    } finally {
        try {
            if (tempDataSink != null) {
                tempDataSink.close();
            }
        } catch (IOException e) {
            if (ioException == null) {
                ioException = e;
            } else if (ioException != e) {
                ioException.addSuppressed(e);
            }
            throw new PrestoException(GENERIC_SPILL_FAILURE, "Failed to spill pages", ioException);
        }
    }
    throw new PrestoException(GENERIC_SPILL_FAILURE, "Failed to spill pages", ioException);
}