ScanMetrics counter update may not happen in case of exception in TableRecordReaderImpl

 // do not retry if the exception tells us not to do so
 if (e instanceof DoNotRetryIOException) {
 throw e;
 }

 if (lastSuccessfulRow == null) {
 restart(scan.getStartRow());
 } else {
 restart(lastSuccessfulRow);
 scanner.next(); // skip presumed already mapped row
 }

 catch (IOException ioe) {
 if (logScannerActivity) {
 long now = System.currentTimeMillis();
 LOG.info("Mapper took " + (now-timestamp)
 + "ms to process " + rowcount + " rows");
 LOG.info(ioe.toString(), ioe);
 String lastRow = lastSuccessfulRow == null ?
 "null" : Bytes.toStringBinary(lastSuccessfulRow);
 LOG.info("lastSuccessfulRow=" + lastRow);
 }
 throw ioe;
 }