Welcome to DATASTAX Support.
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Knowledge Base
- DataStax Enterprise
- DataStax OpsCenter
- DataStax Drivers
- DataStax Studio
- General Announcements
- Internal
- Datastax Documentation
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
- DSE Solr indexing performance drop with delete workloads
- Solr filter cache hit rate fluctuation post DSE 5.1.6 versions
- Adding a New Search Data Center to Existing Cluster
- FAQ - Does DSE Search support multiple data directories for Solr indexes
- HOW TO - setup Solr Queries to measure percentile latencies See all 22 articles
Install/Upgrade
- 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
- Installing earlier versions of DSE installs latest version of OpsCenter agent See all 11 articles
Graph
- 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
- Graph loader throws "failed to map segment from shared object" warning
General
- DSE startup fails with "Failed to dispatch hints file", "file is corrupted"
- [Support-694] In both the history server and spark ui, stdout/stderr is not accessible for completed/finished applications/drivers
- Repair streams fail with "AssertionError: UnfilteredPartitionIterator should not contain empty partitions"
- NodeSync service startup returns AssertionError with message "No tables will be validated by NodeSync."
- FAQ - Can DSEFS be used without running DSE nodes in Analytics mode?
- Node fails to start with "Error: Could not find or load main class com.datastax.bdp.DseModule" See all 111 articles
Analytics
- 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()"
- DSE Spark returns BusyPoolException after upgrade to DSE 5.0.14
- Spark Executor reports CorruptStatistics warnings when reading older Parquet files See all 31 articles
Repair Service
- 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
- Repair Service Wont Start - Cant Allocate Parallel Repair Threads.
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
- 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
- Unable to generate diagnostic tarball from OpsCenter with a custom system filename See all 32 articles
Backups
- 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
- OpsCenter restore for DSE 5.0+ clusters does not revert object permissions See all 11 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