Examples with UnsafeCarbonRowPage org.apache.carbondata.processing.loading.sort.unsafe.UnsafeCarbonRowPage used on opensource projects

Example 1 with UnsafeCarbonRowPage

use of org.apache.carbondata.processing.loading.sort.unsafe.UnsafeCarbonRowPage in project carbondata by apache.

the class UnsafeParallelReadMergeSorterImpl method sort.

@Override
public Iterator<CarbonRowBatch>[] sort(Iterator<CarbonRowBatch>[] iterators) throws CarbonDataLoadingException {
    int inMemoryChunkSizeInMB = CarbonProperties.getInstance().getSortMemoryChunkSizeInMB();
    UnsafeSortDataRows sortDataRow = new UnsafeSortDataRows(sortParameters, unsafeIntermediateFileMerger, inMemoryChunkSizeInMB);
    final int batchSize = CarbonProperties.getInstance().getBatchSize();
    try {
        sortDataRow.initialize();
    } catch (MemoryException e) {
        throw new CarbonDataLoadingException(e);
    }
    this.executorService = Executors.newFixedThreadPool(iterators.length, new CarbonThreadFactory("UnsafeParallelSorterPool:" + sortParameters.getTableName()));
    this.threadStatusObserver = new ThreadStatusObserver(executorService);
    try {
        for (int i = 0; i < iterators.length; i++) {
            executorService.execute(new SortIteratorThread(iterators[i], sortDataRow, batchSize, rowCounter, this.threadStatusObserver));
        }
        executorService.shutdown();
        executorService.awaitTermination(2, TimeUnit.DAYS);
        processRowToNextStep(sortDataRow, sortParameters);
    } catch (Exception e) {
        checkError();
        throw new CarbonDataLoadingException("Problem while shutdown the server ", e);
    }
    checkError();
    try {
        unsafeIntermediateFileMerger.finish();
        List<UnsafeCarbonRowPage> rowPages = unsafeIntermediateFileMerger.getRowPages();
        finalMerger.startFinalMerge(rowPages.toArray(new UnsafeCarbonRowPage[rowPages.size()]), unsafeIntermediateFileMerger.getMergedPages());
    } catch (CarbonDataWriterException e) {
        throw new CarbonDataLoadingException(e);
    } catch (CarbonSortKeyAndGroupByException e) {
        throw new CarbonDataLoadingException(e);
    }
    // Creates the iterator to read from merge sorter.
    Iterator<CarbonRowBatch> batchIterator = new CarbonIterator<CarbonRowBatch>() {

        @Override
        public boolean hasNext() {
            return finalMerger.hasNext();
        }

        @Override
        public CarbonRowBatch next() {
            int counter = 0;
            CarbonRowBatch rowBatch = new CarbonRowBatch(batchSize);
            while (finalMerger.hasNext() && counter < batchSize) {
                rowBatch.addRow(new CarbonRow(finalMerger.next()));
                counter++;
            }
            return rowBatch;
        }
    };
    return new Iterator[] { batchIterator };
}

Example 2 with UnsafeCarbonRowPage

use of org.apache.carbondata.processing.loading.sort.unsafe.UnsafeCarbonRowPage in project carbondata by apache.

the class UnsafeInMemoryIntermediateDataMerger method startSorting.

/**
 * Below method will be used to start storing process This method will get
 * all the temp files present in sort temp folder then it will create the
 * record holder heap and then it will read first record from each file and
 * initialize the heap
 *
 * @throws CarbonSortKeyAndGroupByException
 */
private void startSorting() throws CarbonSortKeyAndGroupByException {
    LOGGER.info("Number of row pages in intermediate merger: " + this.holderCounter);
    // create record holder heap
    createRecordHolderQueue(unsafeCarbonRowPages);
    // iterate over file list and create chunk holder and add to heap
    LOGGER.info("Started adding first record from row page");
    UnsafeInmemoryMergeHolder unsafePageHolder = null;
    byte index = 0;
    for (UnsafeCarbonRowPage unsafeCarbonRowPage : unsafeCarbonRowPages) {
        // create chunk holder
        unsafePageHolder = new UnsafeInmemoryMergeHolder(unsafeCarbonRowPage, index++);
        // initialize
        unsafePageHolder.readRow();
        // add to heap
        this.recordHolderHeap.add(unsafePageHolder);
    }
    LOGGER.info("Heap Size" + this.recordHolderHeap.size());
}

Example 3 with UnsafeCarbonRowPage

use of org.apache.carbondata.processing.loading.sort.unsafe.UnsafeCarbonRowPage in project carbondata by apache.

the class UnsafeSingleThreadFinalSortFilesMerger method startSorting.

/**
 * Below method will be used to start storing process This method will get
 * all the temp files present in sort temp folder then it will create the
 * record holder heap and then it will read first record from each file and
 * initialize the heap
 */
private void startSorting(UnsafeCarbonRowPage[] rowPages, List<UnsafeInMemoryIntermediateDataMerger> merges) throws CarbonDataWriterException {
    try {
        List<File> filesToMergeSort = getFilesToMergeSort();
        this.fileCounter = rowPages.length + filesToMergeSort.size() + merges.size();
        if (fileCounter == 0) {
            LOGGER.info("No files to merge sort");
            return;
        }
        LOGGER.info("Starting final merger");
        LOGGER.info("Number of row pages: " + this.fileCounter);
        // create record holder heap
        createRecordHolderQueue();
        // iterate over file list and create chunk holder and add to heap
        LOGGER.info("Started adding first record from each page");
        for (final UnsafeCarbonRowPage rowPage : rowPages) {
            SortTempChunkHolder sortTempFileChunkHolder = new UnsafeInmemoryHolder(rowPage);
            // initialize
            sortTempFileChunkHolder.readRow();
            recordHolderHeapLocal.add(sortTempFileChunkHolder);
        }
        for (final UnsafeInMemoryIntermediateDataMerger merger : merges) {
            SortTempChunkHolder sortTempFileChunkHolder = new UnsafeFinalMergePageHolder(merger, parameters.getNoDictionarySortColumn());
            // initialize
            sortTempFileChunkHolder.readRow();
            recordHolderHeapLocal.add(sortTempFileChunkHolder);
        }
        for (final File file : filesToMergeSort) {
            SortTempChunkHolder sortTempFileChunkHolder = new UnsafeSortTempFileChunkHolder(file, parameters);
            // initialize
            sortTempFileChunkHolder.readRow();
            recordHolderHeapLocal.add(sortTempFileChunkHolder);
        }
        LOGGER.info("Heap Size: " + this.recordHolderHeapLocal.size());
    } catch (Exception e) {
        LOGGER.error(e);
        throw new CarbonDataWriterException(e);
    }
}