Couchbase Q&A

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kamal2222ahmed's picture
Asked 4 months 2 weeks ago

erlang server crashed when running couchbase community server edition on centos 6.4 64 bit Virtual Machine

installed: 2.2.0-837-rel couchbase server
[product]
title = Couchbase Server
version = 2.2.0-837-rel
license = community

df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg1-lv_root
5.0G 891M 3.9G...

alexo's picture
Asked 4 months 2 weeks ago
Latest activity 4 months 2 weeks ago

Java client not aware about failed over node

We are using the latest version of couchbase-java-client (1.4.0-dp2).
Assume the following scenario:
- We have a cluster with 2 nodes.
- Client is able to read & write documents to a bucket.
- create a couple of documents (one is active on node1, the other is active...

313180's picture
Asked 4 months 2 weeks ago
Latest activity 3 months 4 weeks ago

lost a lot of data where a node crash

my Test as follows:
I have start 4 nodes for the coucbase cluster.
1.start a client (1.4.0) to set 100 0000 items to the couchbase!
2.before the client add completed I kill one of the node.
3.and the client logs as "Discarding partially completed op: Cmd: 2 Opaque:...

jnordberg's picture
Asked 4 months 2 weeks ago
Latest activity 4 months 2 weeks ago

Timeout errors

I'm trying to connect to a remote couchbase server, the connection callback fires ok. But if i try to get a key i get a [Error: Operation timed out] code: 23 error and if i try to query a view i get a...

wrx230's picture
Asked 4 months 2 weeks ago
Latest activity 4 months 2 weeks ago

How do i do a join that doesn't use document key?

How would I run a query like this:

"SELECT asset.fqdn, port.name FROM bucket asset JOIN bucket port ON port.assetId = asset.id" (or asset.id could be key).

Asset document is asset:1 and has asset.id (asset:1), and some other details.

Port document has port.assetId (asset:1...

dorony's picture
Asked 4 months 3 weeks ago
Latest activity 4 months 2 weeks ago

Cast error when enumerating a view

I have a view whose key-value pair is (expiration, doc) where doc is always a number.

When I read the results of the view via the .NET API, I get the following error:

Newtonsoft.Json.JsonSerializationException: Error converting value 1 to type 'Couchbase.IViewRow'. Path '', line 1...

chaijun's picture
Asked 4 months 3 weeks ago

about couchbase hit rates question

for example, my key = 'key', value = 'value', and get(key), the web console show me ops per second is 5K, and i change value = 'value'*1000, and get(key), the web console show me ops second is 200, when the value is so huge , the hit rates will lower,how can i improve the hit rates when value...

Vexxed72's picture
Asked 4 months 3 weeks ago

Changing Node Type after Cluster Creation

Let's say you deploy a Couchbase server in EC2 using one instance type and later decide you want to change to a new instance type (for example, they just introduced a new instance type that is a much better fit for your needs, adds SSD, etc).

What is the process for switching out a...

canagey's picture
Asked 4 months 3 weeks ago
Latest activity 4 months 3 weeks ago

With N1QL queries being executed on the Couchbase server, what is the cost (on performance) of running such queries?

Appreciate if the cost can be defined for example with 100GB of data in one bucket if we run a query what the performance cost is??

bmhardy's picture
Asked 4 months 3 weeks ago

What caused a "panic"?

My app appears to be synchronizing on and on until finally a "panic" occurs and the sync completes. Do you have any idea what might be happening?

I see this in the couchbase sync gateway logs:

2014/05/02 19:24:56 http: panic serving 166.216.226.71:46063: runtime error: assignment...

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