Source:
public void run() { verifyState(); final Period intermediatePersistPeriod = config.getIntermediatePersistPeriod(); try { plumber.startJob(); long nextFlush = new DateTime().plus(intermediatePersistPeriod).getMillis(); while (firehose.hasMore()) { InputRow inputRow = null; try { try { inputRow = firehose.nextRow(); } catch (Exception e) { log.debug(e, "thrown away line due to exception, considering unparseable"); metrics.incrementUnparseable(); continue; } int currCount = plumber.add(inputRow); if (currCount == -1) { metrics.incrementThrownAway(); log.debug("Throwing away event[%s]", inputRow); if (System.currentTimeMillis() > nextFlush) { plumber.persist(firehose.commit()); nextFlush = new DateTime().plus(intermediatePersistPeriod).getMillis(); } continue; } if (currCount >= config.getMaxRowsInMemory() || System.currentTimeMillis() > nextFlush) { plumber.persist(firehose.commit()); nextFlush = new DateTime().plus(intermediatePersistPeriod).getMillis(); } metrics.incrementProcessed(); } catch (Exception e) { if (inputRow != null) { log.error(e, "unparseable line: %s", inputRow); } metrics.incrementUnparseable(); continue; } } } catch (RuntimeException e) { log.makeAlert( e, "RuntimeException aborted realtime processing[%s]", fireDepartment.getDataSchema().getDataSource() ).emit(); normalExit = false; throw e; } catch (Error e) { log.makeAlert(e, "Exception aborted realtime processing[%s]", fireDepartment.getDataSchema().getDataSource()) .emit(); normalExit = false; throw e; } finally { CloseQuietly.close(firehose); if (normalExit) { plumber.finishJob(); plumber = null; firehose = null; } } }

Target:
public void run() { verifyState(); final Period intermediatePersistPeriod = config.getIntermediatePersistPeriod(); try { plumber.startJob(); long nextFlush = new DateTime().plus(intermediatePersistPeriod).getMillis(); while (firehose.hasMore()) { InputRow inputRow = null; try { try { inputRow = firehose.nextRow(); } catch (Exception e) { log.debug(e, "thrown away line due to exception, considering unparseable"); metrics.incrementUnparseable(); continue; } int currCount = plumber.add(inputRow); if (currCount == -1) { metrics.incrementThrownAway(); log.debug("Throwing away event[%s]", inputRow); if (System.currentTimeMillis() > nextFlush) { plumber.persist(firehose.commit()); nextFlush = new DateTime().plus(intermediatePersistPeriod).getMillis(); } continue; } if (currCount >= config.getMaxRowsInMemory() || System.currentTimeMillis() > nextFlush) { plumber.persist(firehose.commit()); nextFlush = new DateTime().plus(intermediatePersistPeriod).getMillis(); } metrics.incrementProcessed(); } catch (ParseException e) { if (inputRow != null) { log.error(e, "unparseable line: %s", inputRow); } metrics.incrementUnparseable(); } } } catch (RuntimeException e) { log.makeAlert( e, "RuntimeException aborted realtime processing[%s]", fireDepartment.getDataSchema().getDataSource() ).emit(); normalExit = false; throw e; } catch (Error e) { log.makeAlert(e, "Exception aborted realtime processing[%s]", fireDepartment.getDataSchema().getDataSource()) .emit(); normalExit = false; throw e; } finally { CloseQuietly.close(firehose); if (normalExit) { plumber.finishJob(); plumber = null; firehose = null; } } }