Troubleshooting
For troubleshooting articles. Predominantly problem / error, and workaround / solution.
- Unable to access VDS even with the granted Privileges (v21+)
- DDC collection fails with "failed: 'exit status 1') Error: unknown flag: --retries"
- Coordinator spawning multiple threads and becoming unresponsive
- Iceberg table shows NULL values for all columns
- java.security.GeneralSecurityException: Directory /opt/dremio/data/security is not accessible to owner only
- 502 error when adding a source
- Dremio Cloud - Engine scaling fails due to instance capacity issues
- PowerBi Navigator only shows 10,000 spaces and subfolders
- New Dremio startup fails on a kubernetes deployment with "Could not create the Java Virtual Machine."
- Troubleshooting: Query error: release version 8 not supported
- Changes to AzureAD permissions in 24.3
- Java 11 GC logging options
- Error message 'securityProfile.encryptionAtHost' observed when scaling an engine or executing a query
- Custom ARP Connector CredentialsService Build Error in 24.3.0+
- AWSE upgrade fails with "The following properties were invalid: paths.copyintoerror"
- VALIDATION ERROR: Reflection could not be created in 24.3.0
- Could not get the mongo compatibility version
- How to troubleshoot the "given configuration has older ctime" errors
- Ranger - failed to refresh policies. Will continue to use last known version of policies (-1)
- Verify Ranger Policies on Dremio Coordinator
- ALTER Session is not applied when downloading data
- UI Run - Why does the SELECT * row count not match COUNT(*)?
- Unable to format any PDS on a specific Source: "Unexpected Error occured"
- ERROR ROOT - Dremio is exiting. Failure while starting services. org.rocksdb.RocksDBException: Can't access /######.sst
- Why is nothing being logged to server.log ?
- Failure while attempting to run instances. There are not enough free addresses in subnet <subnet-id> to satisfy the requested number of instances.
- AWSE Engine Launch failed: not have sufficient <instance type> capacity in the Availability Zone you requested
- Why does my Rest API SQL query return only 100 rows?
- Unable to Configure and Browse ADLS Source with Azure AD Service Principal
- Troubleshooting "Query was rejected based on a rule that did not specify a rejection reason."