use of org.apache.carbondata.processing.loading.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.execute(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 };
}
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