in flink-connector-hbase-2.2/src/main/java/org/apache/flink/connector/hbase2/source/AbstractTableInputFormat.java [128:145]
public void open(TableInputSplit split) throws IOException {
initTable();
if (split == null) {
throw new IOException("Input split is null!");
}
logSplitInfo("opening", split);
// set scan range
currentRow = split.getStartRow();
scan.setStartRow(currentRow);
scan.setStopRow(split.getEndRow());
resultScanner = table.getScanner(scan);
endReached = false;
scannedRows = 0;
}