Read Timeout during archiving calculations.

This happens with a lot simultaneous indexing due to archiving actions.

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/urllib3/connectionpool.py", line 384, in _make_request
    six.raise_from(e, None)
  File "<string>", line 2, in raise_from
  File "/usr/local/lib/python3.6/site-packages/urllib3/connectionpool.py", line 380, in _make_request
    httplib_response = conn.getresponse()
  File "/usr/local/lib/python3.6/http/client.py", line 1331, in getresponse
    response.begin()
  File "/usr/local/lib/python3.6/http/client.py", line 297, in begin
    version, status, reason = self._read_status()
  File "/usr/local/lib/python3.6/http/client.py", line 258, in _read_status
    line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
  File "/usr/local/lib/python3.6/socket.py", line 586, in readinto
    return self._sock.recv_into(b)
socket.timeout: timed out

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/elasticsearch/connection/http_urllib3.py", line 172, in perform_request
    response = self.pool.urlopen(method, url, body, retries=Retry(False), headers=request_headers, **kw)
  File "/usr/local/lib/python3.6/site-packages/urllib3/connectionpool.py", line 638, in urlopen
    _stacktrace=sys.exc_info()[2])
  File "/usr/local/lib/python3.6/site-packages/urllib3/util/retry.py", line 343, in increment
    raise six.reraise(type(error), error, _stacktrace)
  File "/usr/local/lib/python3.6/site-packages/urllib3/packages/six.py", line 686, in reraise
    raise value
  File "/usr/local/lib/python3.6/site-packages/urllib3/connectionpool.py", line 600, in urlopen
    chunked=chunked)
  File "/usr/local/lib/python3.6/site-packages/urllib3/connectionpool.py", line 386, in _make_request
    self._raise_timeout(err=e, url=url, timeout_value=read_timeout)
  File "/usr/local/lib/python3.6/site-packages/urllib3/connectionpool.py", line 306, in _raise_timeout
    raise ReadTimeoutError(self, url, "Read timed out. (read timeout=%s)" % timeout_value)
urllib3.exceptions.ReadTimeoutError: HTTPConnectionPool(host='enc-preprocessing-nomad.esc', port=19200): Read timed out. (read timeout=10)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/app/nomad/processing/base.py", line 320, in wrapper
    func(self, *args, **kwargs)
  File "/app/nomad/processing/data.py", line 265, in archiving
    search.Entry.from_calc_with_metadata(calc_with_metadata).save()
  File "/usr/local/lib/python3.6/site-packages/elasticsearch_dsl/document.py", line 439, in save
    **doc_meta
  File "/usr/local/lib/python3.6/site-packages/elasticsearch/client/utils.py", line 76, in _wrapped
    return func(*args, params=params, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/elasticsearch/client/__init__.py", line 319, in index
    _make_path(index, doc_type, id), params=params, body=body)
  File "/usr/local/lib/python3.6/site-packages/elasticsearch/transport.py", line 318, in perform_request
    status, headers_response, data = connection.perform_request(method, url, params, body, headers=headers, ignore=ignore, timeout=timeout)
  File "/usr/local/lib/python3.6/site-packages/elasticsearch/connection/http_urllib3.py", line 180, in perform_request
    raise ConnectionTimeout('TIMEOUT', str(e), e)
elasticsearch.exceptions.ConnectionTimeout: ConnectionTimeout caused by - ReadTimeoutError(HTTPConnectionPool(host='enc-preprocessing-nomad.esc', port=19200): Read timed out. (read timeout=10))

Relaxing timeouts and retries might help: described here