Critical Description
Similar to GOCBC-431 and JVMCBC-654.
The .NET SDK does not work with publically addressable Kubernetes clusters.
The first problem is that it tries to resolve the hostname in the config, even if that's not possible (due to not having access to the appropriate DNS):
Couchbase.Configuration.Server.Serialization.BootstrapException
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HResult=0x80131500
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Message=Could not bootstrap - check inner exceptions for details.
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Source=Couchbase.NetClient
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StackTrace:
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at Couchbase.Core.ClusterController.CreateBucketImpl(String bucketName, String password, IAuthenticator authenticator)
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at Couchbase.Core.ClusterController.CreateBucket(String bucketName, String password, IAuthenticator authenticator)
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at Couchbase.Cluster.OpenBucket(String bucketName, String password)
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at Couchbase.Cluster.OpenBucket(String bucketname)
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at AltAddress.Program.Main(String[] args) in C:\Users\Administrator\source\repos\AltAddress\AltAddress\Program.cs:line 27
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Inner Exception 1:
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TargetInvocationException: Exception has been thrown by the target of an invocation.
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Inner Exception 2:
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UnsupportedAddressFamilyException: http://cb-example-0000.cb-example.default.svc
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If I add duff entries into the hosts file then it gets past this error and seems to bootstrap correctly, however operations will randomly fail.
Looking at why this is in the logs, it seems that the node locator is not being initialized correctly:
19-04-16 15:26:09,192 [1] TRACE Couchbase.Configuration.ConfigContextBase - Getting KeyMapper for rev#109 on thread 1
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2019-04-16 15:26:09,192 [1] TRACE Couchbase.Core.Buckets.VBucketKeyMapper - Using index 77 for key Test - rev109
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2019-04-16 15:26:09,192 [1] DEBUG Couchbase.Core.VBucket - System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
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at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
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at Couchbase.Core.VBucket.LocatePrimary()
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2019-04-16 15:26:09,193 [1] DEBUG Couchbase.Core.VBucket - System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
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at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
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at Couchbase.Core.VBucket.LocatePrimary()
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The reason that it works sometimes is because if the vbucket locator can't find the node it needs in the vbucket map, it picks a random one - https://github.com/couchbase/couchbase-net-client/blob/2.7.6/Src/Couchbase/Core/VBucket.cs#L73.
So if it happens to pick the 'right' node then the operation will succeed, otherwise it will fail.
Attachments
Issue Links
- causes
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NCBC-2002 ServiceNotSupportedException: Data service is hidden by null node during BS
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- Resolved
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| For Gerrit Dashboard: NCBC-1927 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V |
| 109050,4 | NCBC-1927: Resolve vbucket server map endpoints if different from bucket config server list | release27 | couchbase-net-client | Status: MERGED | +2 | +1 |
| 111462,10 | NCBC-2002: ServiceNotSupportedException: Data service not found | release27 | couchbase-net-client | Status: MERGED | +2 | +1 |
| 111507,2 | Revert "NCBC-1927: Resolve vbucket server map endpoints if different from bucket config server list" | release27 | couchbase-net-client | Status: MERGED | +2 | +1 |