Questions tagged [datastax-enterprise]

Use this tag when referencing (DataStax Enterprise)[https://www.datastax.com/products/datastax-enterprise], a scale-out, cloud-native NoSQL DBMS built on Apache Cassandra®.

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cassandra stress test results showing dropped performance in C* version 4.1.3 compare to 4.0.5

we are planning to upgrade our cassandra cluster running on version 4.0.5 to 4.1.3. Before upgrade, we performed stress-test on both version. steps we followed :- created 3 node cassandra cluster ...
Vivek Kumar 's user avatar
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sstableloader - Not able to restore backups taken by OpsCenter using command line sstableloader

I am trying to restore backups generated by OpsCenter on target cluster with different topology using sstableloader but sstableloader is not able to recognize backups taken by OpsCenter. There are no ...
Ajay T's user avatar
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Not able to find casandra tables in apache spark

I started the spark by dse spark command. Later I created a one rdd with cassandra keyspace and table .. Trying to print contents of tables using rddname.first But it shows couldn’t able to find ...
Anil Kumar yellapu's user avatar
1 vote
2 answers
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Cassandra nodes going down frequently and throwing error A node with address <IP Address> already exists, cancelling join

We are using Cassandra for our services with a cluster of 4 data center and 6 nodes in each DC. Recently we update our node SKU by first adding 6 new nodes in same data center, migrating the data from ...
Vikas Gupta's user avatar
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1 answer
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How do I upgrade a DataStax Enterprise cluster to 6.8.25 with OpsCenter Lifecycle Manager?

What are the steps (or all the commands) to upgrade (just the 6.8.25 fix, I have 6.18.16 version now) all nodes in cluster with LifeCycle Manager? I've found this but it refers to 6.5 version of DSE: ...
dba_db2_dse's user avatar
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1 answer
275 views

Cassandra 3.11.2 startup returning ConfigurationException "Unable to find authenticator class 'com.datastax.bdp.cassandra.auth.PasswordAuthenticator'"

i am trying to start Apache Cassandra 3.11.2 on Centos 7 and i get error Exception (org.apache.cassandra.exceptions.ConfigurationException) encountered during startup: Unable to find authenticator ...
Dmitrij's user avatar
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2 votes
1 answer
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Setting up a 3-node cluster, getting exception "Unable to gossip with any peers"

Getting Gossip error when trying to setup 3 node cluster. Node-1: Private IP: 10.10.0.1 Public IP: public_ip_1 Node-2: Private IP: 10.10.0.2 Public IP: public_ip_2 Node-3: Private IP: 10.10.0.3 ...
Ranjeet Ranjan's user avatar
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Agents not connecting to OpsCenter via STOMP, UI displays question marks in the STOMP column

The previous DBA created and connected a cluster (4 nodes) to DSE OpsCenter. It's almost perfect (nodes are connected and visible) except for the STOMP service. In the OpsCenter -> Nodes -> ...
dba_db2_dse's user avatar
-1 votes
2 answers
287 views

Are there Performance Impacts for One Large Table vs Several Smaller Tables in Cassandra?

I'm looking for any input/feedback on real world experiences/troubles with creating one very large table in DSE Cassandra versus a using several more tables and breaking the dataset up somewhat. Are ...
James's user avatar
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Oracle, DataStax academy : Kernel Panic - not syncing

I'm suffering from kernel panic issue. Below is capture of the error. Please help me :
james kam's user avatar
1 vote
1 answer
248 views

sstableloader fails to execute, requires permissions on /var/lib/cassandra/commitlog

I am trying to run sstableloader on my Yum based DataStax 6.8.30 version cluster to transfer sstables to another Yum based DataStax 6.8.30 version cluster. The dse service on both the setups was ...
Radha Wadhera's user avatar
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1 answer
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What is the best way to monitor compaction strategy performance over time for DSE clusters?

As stated in the title, I'm wondering what the best way to monitor compaction strategy performance is on my DSE cluster over time, as it (the database) grows. The current strategy in use is ...
James's user avatar
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1 answer
275 views

DSE Services automatically shutting down

Hello Cassandra Experts, We're observing an unusual situation where the Cassandra services are shutting down on their own, we have setup a 3-node Cassandra cluster. We have automated the Cassandra ...
CassandraNovice's user avatar
1 vote
1 answer
176 views

Cannot run nodetool commands after enabling JMX authentication in DSE

I would like to use these two pages to enable DSE Unified Authentication and realize a secure environment. I have tried to configure it but it does not work. How is it as a symptom. When I type ...
Youjie's user avatar
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1 answer
229 views

How can I clone a keyspace to another DSE cluster?

I have a question about Cassandra Backup & Restore procedure. I have setup a 3-node source cluster and now I took a backup of a keyspace using: https://docs.datastax.com/en/dse/6.8/dse-admin/...
CassandraNovice's user avatar
1 vote
1 answer
342 views

cassandra-stress returns "Failed to connect over JMX; not collecting these stats"

I took the DS210 course offered by Datastax and prepared a cluster of almost the same configuration by myself. I edited the /etc/dse/cassandra/cassandra-env.sh file in Exercise 2.3, but I still got &...
Youjie's user avatar
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1 vote
1 answer
66 views

Unable to clone keyspace using DSE Backup & Restore Service

I'm trying to restore from old keyspace to new keyspace but getting below error. cqlsh> RESTORE geo1 ... FROM BACKUP ks1_config_name-20220916194400.146-ea3173fc-760e-4dcd-9d7b-6f928c40eab5 ......
Anji m's user avatar
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1 answer
289 views

How can we enforce custom password complexity in Cassandra?

Is there any way to enforce password policy for Cassandra database users? Something like the password must contains 8 characters with a special character , an upper case character and a lower case. ...
Raj Kilari's user avatar
1 vote
1 answer
304 views

How do I use root to start Cassandra?

I am attempting to use the root user as the cassandra user but getting an error in the output log: Running Cassandra as root user or group is not recommended - please start Cassandra using a different ...
AndrewL209's user avatar
3 votes
2 answers
293 views

How do I migrate from PropertyFileSnitch to GossipingPropertyFileSnitch in DataStax Enterprise?

I have followed this link to migrate PropertyFileSnitch to GossipingPropertyFileSnitch but I'm getting this error: INFO [DSE main thread] 2022-09-08 14:12:44,295 StorageService.java:286 - Detected ...
Anji m's user avatar
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