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[Mike Wylie <question205774@xxxxxxxxxxxxxxxxxxxxx>]

Question #205774 on Graphite changed:
https://answers.launchpad.net/graphite/+question/205774

Mike Wylie posted a new comment:
I had a look at the code in the exception trace and had a
though....would I be taking my life in my hands if I altered the file
/opt/graphite/lib/carbon/writer.py, to send the metric to the log file,
just before trying to look for its path?  This may give me an idea what
it's failing to work with.

Would I need to restart something for the code to take affect?

I'm not a real python programmer, but I can understand the basics, I was
thinking something along the lines of:

def optimalWriteOrder():
  "Generates metrics with the most cached values first and applies a soft rate limit on new metrics"
  global lastCreateInterval
  global createCount
  metrics = MetricCache.counts()

  t = time.time()
  metrics.sort(key=lambda item: item[1], reverse=True) # by queue size, descending
  log.msg("Sorted %d cache queues in %.6f seconds" % (len(metrics), time.time() - t))

  for metric, queueSize in metrics:
    if state.cacheTooFull and MetricCache.size < CACHE_SIZE_LOW_WATERMARK:
      events.cacheSpaceAvailable()
# ------------------------------------------------
# my new piece of code
#
    log.msg("reviewing metric:"+metric)
# ------------------------------------------------
    dbFilePath = getFilesystemPath(metric)
    dbFileExists = exists(dbFilePath)

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