Examples of cloudtrace.instrument.Span.stop()

cloudtrace.instrument.Span.stop()
The block has completed, stop the clock

            log.error("Unexpected error preparing for commit", error);
            break;
          }
        }
      }
      prep.stop();
      
      Span wal = Trace.start("wal");
      long pt2 = System.currentTimeMillis();
      long avgPrepareTime = (long) ((pt2 - pt1) / (double) us.queuedMutations.size());
      us.prepareTimes.addStat(pt2 - pt1);

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            log.error("Unknown exception logging mutations, counts for mutations in flight not decremented!", t);
            throw new RuntimeException(t);
          }
        }
        
        wal.stop();
        
        Span commit = Trace.start("commit");
        long t1 = System.currentTimeMillis();
        for (Entry<CommitSession,? extends List<Mutation>> entry : sendables.entrySet()) {
          CommitSession commitSession = entry.getKey();

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        us.flushTime += (t2 - pt1);
        us.commitTimes.addStat(t2 - t1);
        
        if (updateMetrics.isEnabled())
          updateMetrics.add(TabletServerUpdateMetrics.commitTime, avgCommitTime);
        commit.stop();
      } finally {
        us.queuedMutations.clear();
        if (us.currentTablet != null) {
          us.queuedMutations.put(us.currentTablet, new ArrayList<Mutation>());
        }

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        Mutation mutation = new Mutation(tmutation);
        List<Mutation> mutations = Collections.singletonList(mutation);
        
        Span prep = Trace.start("prep");
        CommitSession cs = tablet.prepareMutationsForCommit(mutations);
        prep.stop();
        if (cs == null) {
          throw new NotServingTabletException(tkeyExtent);
        }
        
        while (true) {

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        while (true) {
          try {
            Span wal = Trace.start("wal");
            logger.log(cs, cs.getWALogSeq(), mutation);
            wal.stop();
            break;
          } catch (IOException ex) {
            log.warn(ex, ex);
          }
        }

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          }
        }
        
        Span commit = Trace.start("commit");
        cs.commit(mutations);
        commit.stop();
      } catch (TConstraintViolationException e) {
        throw new ConstraintViolationException(Translator.translate(e.getViolations().asList(), Translator.CVST));
      } finally {
        writeTracker.finishWrite(opid);
      }

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        Span candidatesSpan = Trace.start("getCandidates");
        status.current.started = System.currentTimeMillis();
        SortedSet<String> candidates = getCandidates();
        status.current.candidates = candidates.size();
        candidatesSpan.stop();
        
        // STEP 2: confirm deletes
        // WARNING: This line is EXTREMELY IMPORTANT.
        // You MUST confirm candidates are okay to delete
        Span confirmDeletesSpan = Trace.start("confirmDeletes");

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        // WARNING: This line is EXTREMELY IMPORTANT.
        // You MUST confirm candidates are okay to delete
        Span confirmDeletesSpan = Trace.start("confirmDeletes");
        confirmDeletes(candidates);
        status.current.inUse = status.current.candidates - candidates.size();
        confirmDeletesSpan.stop();
        
        // STEP 3: delete files
        if (safemode) {
          if (verbose)
            System.out.println("SAFEMODE: There are " + candidates.size() + " data file candidates marked for deletion.\n"

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          deleteFiles(candidates);
          log.info("Number of data file candidates for deletion: " + status.current.candidates);
          log.info("Number of data file candidates still in use: " + status.current.inUse);
          log.info("Number of successfully deleted data files: " + status.current.deleted);
          log.info("Number of data files delete failures: " + status.current.errors);
          deleteSpan.stop();
          
          // check bulk dirs we just to deleted files from to see if empty
          deleteEmptyBulkDirs(candidates);
        }

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        log.info("Beginning garbage collection of write-ahead logs");
        GarbageCollectWriteAheadLogs.collect(fs, status);
      } catch (Exception e) {
        log.error(e, e);
      }
      waLogs.stop();
      gcSpan.stop();
      
      Trace.off();
      try {
        log.debug("Sleeping for " + gcDelay + " milliseconds");

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