Examples with CarbonSortBatch org.apache.carbondata.processing.newflow.row.CarbonSortBatch used on opensource projects

Example 1 with CarbonSortBatch

use of org.apache.carbondata.processing.newflow.row.CarbonSortBatch in project carbondata by apache.

the class UnsafeBatchParallelReadMergeSorterImpl method sort.

@Override
public Iterator<CarbonRowBatch>[] sort(Iterator<CarbonRowBatch>[] iterators) throws CarbonDataLoadingException {
    this.executorService = Executors.newFixedThreadPool(iterators.length);
    this.threadStatusObserver = new ThreadStatusObserver(this.executorService);
    int batchSize = CarbonProperties.getInstance().getBatchSize();
    final SortBatchHolder sortBatchHolder = new SortBatchHolder(sortParameters, iterators.length, this.threadStatusObserver);
    try {
        for (int i = 0; i < iterators.length; i++) {
            executorService.submit(new SortIteratorThread(iterators[i], sortBatchHolder, batchSize, rowCounter, this.threadStatusObserver));
        }
    } catch (Exception e) {
        checkError();
        throw new CarbonDataLoadingException("Problem while shutdown the server ", e);
    }
    checkError();
    // Creates the iterator to read from merge sorter.
    Iterator<CarbonSortBatch> batchIterator = new CarbonIterator<CarbonSortBatch>() {

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

        @Override
        public CarbonSortBatch next() {
            return new CarbonSortBatch(sortBatchHolder.next());
        }
    };
    return new Iterator[] { batchIterator };
}