Troubleshooting
For troubleshooting articles. Predominantly problem / error, and workaround / solution.
- Dremio Cloud - EC2 System Logs and Dremio Node Diagnostics Results
- Dealing with "OUT_OF_MEMORY ERROR: Query was cancelled because it exceeded the memory limits set by the administrator. Expected at least XXX GB bytes, but only had XXX available."
- Invalid properties blocking startup of AWSE instance
- Unable to Configure and Browse ADLS Source with Azure AD Service Principal
- Why is nothing being logged to server.log ?
- ERROR ROOT - Dremio is exiting. Failure while starting services. org.rocksdb.RocksDBException: Can't access /######.sst
- UI Run - Why does the SELECT * row count not match COUNT(*)?
- ALTER Session is not applied when downloading data
- Verify Ranger Policies on Dremio Coordinator
- Ranger - failed to refresh policies. Will continue to use last known version of policies (-1)
- Backup fails with "Failed to attach: couldn't find Dremio process to attach"
- Dremio service down because of Zookeeper DB Corruption
- Could not connect to S3 source: Only one of Region or EndpointConfiguration may be set.
- Client connection errors with "Not a JWT"
- How to troubleshoot the "given configuration has older ctime" errors
- Could not get the mongo compatibility version
- When using Safari browser with Dremio UI a query appears to hang even though it completes
- "Invalid format for $date. Must be wrapped by $numberLong or follow any other valid ISO-8601 format."
- Issue with ZooKeeper causes co-ordinator to go down on Kubernetes
- Hive schema change is not synced with Dremio
- This endpoint does not support BlobStorageEvents or SoftDelete
- VALIDATION ERROR: Reflection could not be created in 24.3.0
- Delta Lake minReaderVersion errors
- AWSE upgrade fails with "The following properties were invalid: paths.copyintoerror"
- CSV download with Date in YYYY-MM-DD format
- SCIM 2.0 compliance of the Microsoft Entra user provisioning service (AAD)
- Fix Kubernetes incorrect PV mount
- SYSTEM ERROR: ValidationException: Cannot convert namespace <dremio db name> to Glue database name
- Custom ARP Connector CredentialsService Build Error in 24.3.0+
- Checking Kubernetes DNS resolution