Welcome to DATASTAX Support.
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Knowledge Base
- DataStax Enterprise
- DataStax OpsCenter
- DataStax Drivers
- DataStax Studio
- General Announcements
- Internal
- Datastax Documentation
Security
- Attempts to connect to a Kerberos-enabled cluster running on CentOS 7 fails with "LoginException: Message stream modified (41)"
- INFO - Transparent Data Encryption in DSE is not supported on D2iQ DC/OS
- Keyspace '<keyspace name>' not found
- 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 See all 9 articles
Search
- Setup SSL for Solr Cluster with internode and Client-to-node encryption
- What is an alternative to using unlimited facets?
- DSE Search Node Logs get Spammed with LukeRequestHandler Warnings "Error getting file length..."
- The dsetool command stop_core_reindex is failing with connection refused
- CQL Solr query returns 'null' for a non-indexed field
- DSE Search indexing errors due to "Document contains at least one immense term" See all 32 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
- Nodetool status over calculates data load
- DSE cannot start with yaml parsing error
- Firewall idle connection timeout causes nodes to lose communication during low traffic times on Linux
- "Error in custom provider" prevents DSE node startup
- HOW TO: Use iostat to diagnose CPU and IO bottlenecks See all 137 articles
Analytics
- DSE does not start after the DSEFS keyspace is dropped
- SSL with scala
- Spark job fails after upgrade from DSE 5.0 with error "is not a valid external type for schema of date"
- Spark Master web UI prompts for login credentials after upgrading to DSE 5.1 or later
- Spark error running executor "Cannot find any build directories"
- DSE Spark Master fails to deserialize orphaned jobs with error "IllegalArgumentException: DSE version < 6.0.0 is not supported" See all 40 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
- NodeSync Status tab in OpsCenter reports false urgencies
- OpsCenter metrics inconsistency
- Troubleshooting OpsCenter connectivity issues
- Datacenter Messaging Latency graphs in OpsCenter for DC names with a hyphen return "NO DATA" See all 35 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