GOCQL is the golang driver for connecting to Cassandra.
GOCQL is the Google go language's driver for connecting to Apache Cassandra.
Questions tagged [gocql]
91 questions
2
votes
0 answers
SIGSEGV error while checking cassandra session is closed or not
This is the code to check gocql session is closed or not. I am using gocql.Session.Closed but getting sigsegv error on closed part when cassandra.service is down. The expected output should be to give status is down although the code is getting…
Mesc
- 123
- 7
2
votes
1 answer
How can I add query parameters dynamically using gocql?
What is the best way of writing a query based on filter inputs(vendor_id, customer_id, order_status_id ... or all nonempt field at the same time) in one function(Golang, Gocql, Cassandra)? I don't want to write new function in every case like the…
Saidamir Botirov
- 53
- 6
2
votes
1 answer
Constantly Reconnect to Cassandra
I have read online that the best practice when using Cassandra is to have 1 Cluster and 1 Session for the lifetime of your service.
My questions are:
In case our Cassandra server goes down, how do I make sure that my Cluster and/or Session will…
Floating Sunfish
- 4,920
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2
votes
2 answers
Inserting an array of user defined types into Cassandra using gocql
I have a UDT in Cassandra and I have a table that has an array of these UDTs in its schema. Here's a sample:
CREATE TYPE keyspace.test_type(
x float,
y float)
In my schema I have
CREATE TABLE test_table(
key text,
test_array…
h94
- 155
- 8
2
votes
1 answer
gocql Query.Get() vs Query.GetRelease()
What does Query.Release() do behind the scene?
What does that mean 'return query back to pool'?
When Query.Get() should be used and when Query.GetRelease()?
user1142902
- 101
- 1
- 4
2
votes
2 answers
How can we mock cassandra session using golang?
Q : Is there any way to mock casssandra session using go without actually connecting to any keyspace/schema/DB. Can we mock cassandra for unit testing?
DKM
- 31
- 1
- 2
2
votes
1 answer
gocql - using Cassandra 3 timeuuid functions
In cqlsh I can execute something like:
SELECT id FROM names WHERE name = 'dave' AND id > maxTimeuuid('2015-04-05 00:05') AND id < minTimeuuid('2019-01-01 00:05');
... this returns a list as expected.
id
--------------------------------------
…
thechane
- 349
- 1
- 2
- 12
2
votes
2 answers
How to create a keyspace in cassandra using gocql
Is there any way to create a new keyspace in cassandra with gocql ?
Ismail H
- 4,226
- 2
- 38
- 61
2
votes
1 answer
Getting "gocql: no response to connection startup within timeout" while connecting to Cassandra
Trying to connect to Cassandra (v 3.10.0) using gocql (Go: 1.8.3). Here is the error
gocql: unable to dial control conn [hostIP]: gocql: no response to connection startup within timeout
panic: gocql: unable to create session: control: unable to…
Abhishek
- 1,175
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2
votes
1 answer
GoCQL : Marshal string into timestamp
I am developing a time series data model with clustering column i.e.
CREATE TABLE events (
id text,
time timestamp,
type text,
val double,
PRIMARY KEY (id, time)
) WITH CLUSTERING ORDER BY (time DESC)
I wish to perform a select…
mcfongtw
- 217
- 2
- 13
2
votes
1 answer
Paging Large Queries: total number
Regarding Cassandra and paging. I might guess the answer but just to be sure;
I know how to ask for a pagesize, but is it possible to get the eventually total number for a query. Like you query select * from tableName with a pagesize of 10, but if…
Chris G.
- 23,930
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- 302
2
votes
2 answers
App container to cassandra node - one to one or?
I am using containers to run both app servers & Cassandra nodes.
When starting the app server container, I need to specify which Cassandra node(1..n) to connect to. How would you divide the workload?
One app container to one or more Cassandra…
Chris G.
- 23,930
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2
votes
1 answer
Column added with "ALTER TABLE" doesn't appear when I make a request
I had a table containing those columns:
cassandra@cqlsh:test> DESCRIBE Table "ItemSource";
CREATE TABLE connect."ItemSource" (
"Identifier" text,
"SourceID" uuid,
"ItemID" uuid,
"Priority" int,
"AdditionalParams" map
Julien Fouilhé
- 2,583
- 3
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- 56
2
votes
2 answers
gocql SELECT * doesn't return all columns
I came across this weird behaviour while trying to implement some counters for my application.
Basically, I did a counter table like so :
CREATE TABLE stats_dev.log_counters (
date text PRIMARY KEY,
all counter
);
Then I have some specific…
Dalpapa
- 177
- 1
- 12
1
vote
1 answer
How do I do a conditional upsert that preserves the value of a column?
I'm looking to mimic an upsert functionality but also add a conditional requirement that if the row doesn't already exist then insert all rows but if the row does exist, only update certain rows. I've spent a long time on this and can't seem to…
korum
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