Welcome to DATASTAX Support.
How can we HELP?
Knowledge Base
Security
- Importing existing CA and public/private key into JKS for Internodes encryption
- How To Configure Microsoft AD Server as the KDC
- FAQ - How to force SSL TLSv1.2 protocol with DSE
- Authentication Transitional Mode (DSE 5.1.x)
- Setting Up LDAP Authentication and Authorization, DSE 5.x
- Setting Up Kerberos Authentication and Authorization, DSE 5.x
Search
- Setup SSL for Solr Cluster with internode and Client-to-node encryption
- File lock error renders node unresponsive to requests on DSE Search nodes
- Solr query returning wrong number of rows - UTF-8 character encoding issue
- Dropping a field from Solr schema via CQL returns SyntaxException, InvalidRequest error
- FAQ - Identifying Lucene flushes in log files for DSE 5.1x and 5.0.x
- DSE Solr indexing performance drop with delete workloads See all 26 articles
Install/Upgrade
- Error opening zip file or JAR manifest missing : /usr/share/dse/cassandra/lib/jamm-0.3.0.jar
- How to lock a specific package version using yum.
- FAQ - Is the DataStax Installer no longer available?
- DROP COMPACT STORAGE results in InvalidRequest on older DSE clusters
- Node upgraded from DSE 4.8 to 5.0 fails to start with NPE for LegacySchemaMigrator
- Upgrading to earlier versions of DSE with YUM installs latest version See all 12 articles
Graph
- Gremlin queries return different counts in OLAP and OLTP modes
- Gremlin Queries Return Different Counts in OLAP and OLTP modes
- Graph query on gremlin-console returns error "Unable to create an OLAP Traversal Source"
- "Vertex label ID clash" error when loading into DSE Graph
- UnsupportedOperationException when running Vertex query in gremlin console
- or() operator in graph query doesn't use indexes See all 7 articles
General
- DSE 5.0 SSTables with UDTs corrupted after upgrading to DSE 5.1, 6.0, or 6.7
- HOW TO - Check if DSE TieredCompactionStrategy is in use
- HOW TO - Correlate high LWT usage to an application
- HOW TO - Check the DSE version running on a node
- HOW TO - Attach or upload files to a support ticket
- Compaction fails with CorruptSSTableException, AssertionError recycling a memory buffer See all 124 articles
Analytics
- Kafka Connector fails tasks while node is bootstrapping
- FAQ - What is the correct syntax to REVOKE Spark application permissions?
- AlwaysOn SQL service startup stuck WAITING for resources on Spark Master web UI
- Spark job not working when started on the Jobserver post-cluster upgrade
- Download button for Spark History Server logs returns "no such app" error
- Spark SQL Thrift server startup fails with "NoSuchMethodError: org.apache.log4j.WriterAppender.setWriter()" See all 33 articles
Repair Service
- Switch to subrange repair for Opscenter tables: settings and backup_reports
- KeyError: 'x-datastax-agent-version' in OpsCenter logs when Repair Service is enabled
- OpsCenter backup fails with "number of files to be backed up larger than queue size"
- OpsCenter Repair Service attempting to repair a dropped keyspace or table
- Repair service may fail due to lost JMX notifications from Cassandra
- OpsCenter repair service fails See all 7 articles
LCM
- Why doesn't LCM list the DSE version I want?
- Unable to install DSE 6.0.3 with LCM - Could not find candidate version for package
- LCM Jobs Fail with: "Cannot find cluster configuration in opscenterd"
- Unexpected Job Status on LCM Clusters
- Lifecycle Manager: Java Install Failure
- LCM Appears to Display Duplicate Clusters See all 15 articles
General
- Example: How to Configure OpsCenter with Active Directory LDAP using sAMAccountName for authentication
- Example: How to Configure OpsCenter with Active Directory LDAP using UID for authentication and no matching sAMAccountName/CN
- Troubleshooting OpsCenter connectivity issues
- Datacenter Messaging Latency graphs in OpsCenter for DC names with a hyphen return "NO DATA"
- Steps to quickly test SNMP alerts from OpsCenter
- Grey ring in OpsCenter UI and DSR errors in agent logs See all 33 articles
Backups
- OpsCenter restore fails with "UnrecoverableKeyException: Password verification failed"
- PKIX error in OpsCenter with HTTPS AWS S3 Compatible Endpoint
- Expired AWS credentials result in failed OpsCenter backups to S3 location
- OpsCenter unable to connect to S3 bucket using default AWS credential provider chain
- Restoring backups containing data encrypted with system_key
- Clearing out Backups History in OpsCenter 6.0 and 6.1 GUI See all 12 articles
Agents
- DataStax agent fails to connect to the local node with ‘Unexpected error connecting to Cassandra , retrying soon , java.lang.NullPointerException'
- Datastax Agent Required Keyspace Permissions
- OpsCenter agent not starting fully when Kerberos authentication is used
- Enabling Agent SSL in LCM-installed clusters
- AWS ELB idle timeout terminating Opscenter/Agent Stomp connection
- OpsCenter agents unable to save data on a remote storage cluster See all 8 articles