public void initialize()

in phoenix5-hive4/src/main/java/org/apache/phoenix/hive/mapreduce/PhoenixRecordReader.java [85:145]
54 lines of code
8 McCabe index (conditional complexity)

    public void initialize(InputSplit split) throws IOException {
        final PhoenixInputSplit pSplit = (PhoenixInputSplit) split;
        final List<Scan> scans = pSplit.getScans();

        if (LOG.isInfoEnabled()) {
            LOG.info("Target table : " + queryPlan.getTableRef().getTable().getPhysicalName());
        }

        if (LOG.isDebugEnabled()) {
            LOG.debug("Scan count[" + scans.size() + "] : " + Bytes.toStringBinary(scans.get(0)
                    .getStartRow()) + " ~ " + Bytes.toStringBinary(scans.get(scans.size() - 1)
                    .getStopRow()));
            LOG.debug("First scan : " + scans.get(0) + " scanAttribute : " + scans.get(0)
                    .getAttributesMap());

            for (int i = 0, limit = scans.size(); i < limit; i++) {
                LOG.debug("EXPECTED_UPPER_REGION_KEY[" + i + "] : " +
                        Bytes.toStringBinary(scans.get(i).getAttribute(
                            BaseScannerRegionObserverConstants.EXPECTED_UPPER_REGION_KEY)));
            }
        }

        try {
            List<PeekingResultIterator> iterators = new ArrayList<>(scans.size
                    ());
            StatementContext ctx = queryPlan.getContext();
            ReadMetricQueue readMetrics = ctx.getReadMetricsQueue();
            String tableName = queryPlan.getTableRef().getTable().getPhysicalName().getString();
            long renewScannerLeaseThreshold = queryPlan.getContext().getConnection()
                    .getQueryServices().getRenewLeaseThresholdMilliSeconds();
            for (Scan scan : scans) {
                scan.setAttribute(BaseScannerRegionObserverConstants.SKIP_REGION_BOUNDARY_CHECK,
                    Bytes.toBytes(true));
                ScanMetricsHolder scanMetricsHolder = ScanMetricsHolder.getInstance(readMetrics, tableName, scan, ctx.getConnection().getLogLevel());
                final TableResultIterator tableResultIterator = new TableResultIterator(
                        queryPlan.getContext().getConnection().getMutationState(), scan, scanMetricsHolder,
                        renewScannerLeaseThreshold, queryPlan, MapReduceParallelScanGrouper.getInstance());

                PeekingResultIterator peekingResultIterator = LookAheadResultIterator.wrap
                        (tableResultIterator);
                iterators.add(peekingResultIterator);
            }
            ResultIterator iterator = queryPlan.useRoundRobinIterator()
                    ? RoundRobinResultIterator.newIterator(iterators, queryPlan)
                    : ConcatResultIterator.newIterator(iterators);
            if (queryPlan.getContext().getSequenceManager().getSequenceCount() > 0) {
                iterator = new SequenceResultIterator(iterator, queryPlan.getContext()
                        .getSequenceManager());
            }
            this.resultIterator = iterator;
            // Clone the row projector as it's not thread safe and would be used
            // simultaneously by multiple threads otherwise.
            this.resultSet = new PhoenixResultSet(this.resultIterator, queryPlan.getProjector()
                    .cloneIfNecessary(),
                    queryPlan.getContext());
        } catch (SQLException e) {
            LOG.error(String.format(" Error [%s] initializing PhoenixRecordReader. ", e
                    .getMessage()));
            Throwables.propagate(e);
        }
    }