Description of problem:
Sometimes we got issues where the workaround is to add the line as below
"db.config.in.operator.block.size = 1000".

Filling the BZ from Mike request.

Version-Release number of selected component (if applicable):
6.4.z

How reproducible:


Steps to Reproduce:
1. Sometimes happens with a customer with more then 17k VM's on virtualization environment
2.
3.

Actual results:
virt-who fail
---
2018-08-31 20:44:11,229 [virtwho.destination_-4756648715778885625 ERROR] MainProcess(3194):Thread-3 @virt.py:run:388 - Thread 'destination_-4756648715778885625' fails with exception:
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/virtwho/virt/virt.py", line 379, in run
    self._run()
  File "/usr/lib/python2.7/site-packages/virtwho/virt/virt.py", line 335, in _run
    self._send_data(data_to_send)
  File "/usr/lib/python2.7/site-packages/virtwho/virt/virt.py", line 665, in _send_data
    self.dest.check_report_state(batch_host_guest_report)
  File "/usr/lib/python2.7/site-packages/virtwho/manager/subscriptionmanager/subscriptionmanager.py", line 353, in check_report_state
    for fail in result_data.get('failedUpdate', []):
AttributeError: 'unicode' object has no attribute 'get'
2018-08-31 20:44:11,229 [virtwho.destination_-4756648715778885625 INFO] MainProcess(3194):Thread-3 @virt.py:_send_data:553 - Error report received
---

Expected results:
virt-who push the information without error.

Additional info: