Examples with HashPartitionerImpl org.apache.carbondata.processing.loading.partition.impl.HashPartitionerImpl used on opensource projects

Example 1 with HashPartitionerImpl

use of org.apache.carbondata.processing.loading.partition.impl.HashPartitionerImpl in project carbondata by apache.

the class DataConverterProcessorStepImpl method initializeBucketColumnPartitioner.

/**
 * initialize partitioner for bucket column
 */
private void initializeBucketColumnPartitioner() {
    List<Integer> indexes = new ArrayList<>();
    List<ColumnSchema> columnSchemas = new ArrayList<>();
    DataField[] inputDataFields = getOutput();
    BucketingInfo bucketingInfo = configuration.getBucketingInfo();
    for (int i = 0; i < inputDataFields.length; i++) {
        for (int j = 0; j < bucketingInfo.getListOfColumns().size(); j++) {
            if (inputDataFields[i].getColumn().getColName().equals(bucketingInfo.getListOfColumns().get(j).getColumnName())) {
                indexes.add(i);
                columnSchemas.add(inputDataFields[i].getColumn().getColumnSchema());
                break;
            }
        }
    }
    // hash partitioner to dispatch rows by bucket column
    this.partitioner = new HashPartitionerImpl(indexes, columnSchemas, bucketingInfo.getNumOfRanges());
}