Examples with MinorFragmentEndpoint org.apache.drill.exec.physical.MinorFragmentEndpoint used on opensource projects

Example 21 with MinorFragmentEndpoint

use of org.apache.drill.exec.physical.MinorFragmentEndpoint in project drill by apache.

the class PartitionSenderRootExec method sendEmptyBatch.

private void sendEmptyBatch(boolean isLast) {
    BatchSchema schema = incoming.getSchema();
    if (schema == null) {
        // If the incoming batch has no schema (possible when there are no input records),
        // create an empty schema to avoid NPE.
        schema = BatchSchema.newBuilder().build();
    }
    FragmentHandle handle = context.getHandle();
    for (MinorFragmentEndpoint destination : popConfig.getDestinations()) {
        AccountingDataTunnel tunnel = context.getDataTunnel(destination.getEndpoint());
        FragmentWritableBatch writableBatch = FragmentWritableBatch.getEmptyBatchWithSchema(isLast, handle.getQueryId(), handle.getMajorFragmentId(), handle.getMinorFragmentId(), operator.getOppositeMajorFragmentId(), destination.getId(), schema);
        stats.startWait();
        try {
            tunnel.sendRecordBatch(writableBatch);
        } finally {
            stats.stopWait();
        }
    }
    stats.addLongStat(Metric.BATCHES_SENT, 1);
}