All Questions
Tagged with cassandra cassandra-2.1
307 questions
0
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95
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cqlsh cannot connect to some nodes in the cluster
cqlsh connection shows below error for couple of machine, but it is successful in other machines in cluster. Bad nodes were removed out of cluster, system_auth replication is 5 for both dc's with ...
- 21
1
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1
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106
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am unable to to the database using cqlsh
I have a cassandra db 1.21 installed on windows 2019, am unable to to the database using cqlsh
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Able to start the cassandra db
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when i run cqslh ...
1
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1
answer
113
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Read timeout error after Cassandra upgraded from 2.2.19 to 3.11.13
I have two dc cluster, where one dc was upgraded from Cassandra 2.2.19 to 3.11.13. Currently I notice cql timeout reported after the upgrade on the Cassandra 3.x DC. The other dc which is on version 2....
- 21
1
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1
answer
327
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NoSuchMethodError: org.apache.cassandra.db.ColumnFamilyStore.getOverlappingSSTables
I have upgraded one of cluster node from 2.2.19 to 3.11.13, but I'm continuously getting the below error in system logs. I'm using TimeWindowCompactionStrategy-3.7.jar
Please let me know how can I fix ...
- 21
0
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1
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139
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Cassandra : map map<text, text> datatype of UDT to SortedDictionary in .Net
I am using cassandra DB for .Net.
I have created a datatype dictionary_type_property map<text,text> inside user defined datatype, but facing problem while converting this datatype value to .Net ...
- 65
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22
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How do I enable DML logging in Cassandra 2.1?
How to enable logging DML(inserts, updates), DDL (alter, create) operations in cassandra version 2.1?
nodetool getlogginglevels
Logger Name Log Level
ROOT ...
- 23
1
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2
answers
186
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Hints during cassandra version upgrade from 2.1.17 to 3.0.15
I was trying to upgrade 4 nodes in a Cluster.
DC1 had nodes N1 and N2
DC2 had nodes N3 and N4
App server is connected to N1 and N2 nodes.
RF = {DC1: 2, DC: 2}
DC2 nodes where upgraded to 3.0.15 first. ...
- 665
0
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1
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604
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Running Cassandra 2.1.17 on Java 11
I am trying to get Cassandra v2.1.17 running using Java 11 (Oracle), but cannot get it to startup. I have updated all the JVM args in cassandra-env.sh to the Java 11 equivalents, but I now get the ...
- 7,083
0
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1
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352
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Can i do logical Query inside Blob column field in cassandra Query?
Can i do logical Query inside Blob column field in cassandra Query ?
like i have a file inside Blob field called purchase amount : 500$ i want to do search and fetch results purchase amount which is ...
- 11
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2
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833
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How do you nest a UDT inside another UDT in Cassandra?
I have created the following user defined types (UDT) in cassandra :
CREATE TYPE keyspace.location (
latitude text,
longitude text,
accuracy text,
address text
);
CREATE TYPE keyspace....
- 203
1
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1
answer
425
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Querying on cassandra consumes CPU
Connecting to Cassandra from application code and querying consumes Cassandra's CPU.
My query is like :: select fields from table where partition_key = "PARTITION_KEY" and clustering_key_1 = "KEY1" ...
- 33
1
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1
answer
148
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Cassandra read consistency is one, but node connects to another node
3 node cluster and RF of 3 means every node has all the data. Consistency is ONE.
So when queried for some data on node-1, ideally as node-1 has all the data it should be able to complete my query.
...
- 33
0
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1
answer
227
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How to migrate existing columns data to new column in Cassandra database?
I need to save user's quiz completion status to a Cassandra's table, previously table was designed only to hold one quiz status so I can't save if the user takes another quiz(User id is primary key). ...
1
vote
1
answer
603
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Cassandra nodes are continuously throwing this error
I have 6 nodes Cassandra cluster where 3 are data nodes and 3 are seed nodes
they all are using Cassandra version 3.7
below are the exceptions which I am getting on data nodes :
java.lang....
- 39
0
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1
answer
203
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Cassandra Read Consistency when write path fail
I am new to cassandra and trying to figure out how cassandra provides consistency in case of failed writes. Consider following scenario where CL is QUORUM, in which case 2 out of 3 replicas must ...
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