Query throws LCB_ERR_UNSUPPORTED_OPERATION (214) error

Python SDK
1

Hi,
I’m working on a Ubuntu 18.04 LTS machine. Couchbase (6.6) runs via minikube with Kubernetes.

When I try to query with Python:

from couchbase.cluster import Cluster, ClusterOptions, QueryOptions
from couchbase.auth import PasswordAuthenticator

cluster = Cluster("couchbase://localhost", ClusterOptions(PasswordAuthenticator("Administrator", "password")))
cb = cluster.bucket("default")
cb_coll = cb.default_collection()

result = cluster.query("SELECT * FROM 'default' WHERE age > 0")

for row in result:
   print(row)

The loop throws the following error:`

Traceback (most recent call last):
  File "/home/sa6/Documents/Python/ML Course/couchbaseTest.py", line 19, in <module>
    for row in result:
  File "/home/sa6/.local/lib/python3.6/site-packages/couchbase_core/__init__.py", line 279, in __iter__
    next_item = next(parent_iter)
  File "/home/sa6/.local/lib/python3.6/site-packages/couchbase_core/n1ql.py", line 530, in __iter__
    self._start()
  File "/home/sa6/.local/lib/python3.6/site-packages/couchbase_core/n1ql.py", line 425, in _start
    self._mres = self._submit_query()
  File "/home/sa6/.local/lib/python3.6/site-packages/couchbase_core/n1ql.py", line 419, in _submit_query
    cross_bucket=self._params.cross_bucket)
couchbase.exceptions.NotSupportedException: <RC=0xD6[LCB_ERR_UNSUPPORTED_OPERATION (214)], Couldn't schedule n1ql query, C Source=(src/n1ql.c,493)>

yaml file:

apiVersion: v1
kind: Secret
metadata:
  name: cb-nativa-auth
type: Opaque
data:
  username: QWRtaW5pc3RyYXRvcg==  # Administrator
  password: cGFzc3dvcmQ=          # password
---
apiVersion: couchbase.com/v2
kind: CouchbaseBucket
metadata:
  name: default  
spec:
  memoryQuota: 128Mi
---
apiVersion: couchbase.com/v2
kind: CouchbaseCluster
metadata:
  name: cb-nativa  
spec:
  image: couchbase/server:6.6.0  
  security:
    adminSecret: cb-nativa-auth
  networking:
    exposeAdminConsole: true
    adminConsoleServices:
    - data
  cluster:
    dataServiceMemoryQuota: 256Mi
    indexServiceMemoryQuota: 256Mi
    searchServiceMemoryQuota: 512Mi
    eventingServiceMemoryQuota: 256Mi
    analyticsServiceMemoryQuota: 1024Mi
    indexStorageSetting: memory_optimized
    autoFailoverTimeout: 120s
    autoFailoverMaxCount: 3
    autoFailoverOnDataDiskIssues: true
    autoFailoverOnDataDiskIssuesTimePeriod: 120s
    autoFailoverServerGroup: false
  buckets:
    managed: true
    memoryQuota: 1024
  servers:
  - size: 3  
    name: data_service
    services:
    - data
  - size: 1
    name: index_query_service
    services:
      - index
      - query
  - size: 1
    name: analytics_service
    services:
      - analytics

Python 3.6.9
couchbase 3.0.8

If I go to the UI I can execute the same query easily… Any idea please?

2 
need back ticks (`default`) or none around default
SELECT * FROM default WHERE age > 0
3

Hi,
It doesn’t work either. Tried both: with back ticks or none around default and still get the same error.

4

I am facing this issue with one database, but the same code is working correctly with another database. How do I differentiate between these databases?

5

Hi @Gautam_Singhania - Can you provide some further details around what you are seeing? The following info would be helpful.

  • Couchbase Server version (working and not working).
  • Are you using the autonomous operator? If so, what version? Also, yaml configuration is helpful.
  • What version of the Python SDK are you using?
  • Can you provide a stack trace of the exception/error you are seeing?