Troubleshooting
For troubleshooting articles. Predominantly problem / error, and workaround / solution.
- Verify Ranger Policies on Dremio Coordinator
- ALTER Session is not applied when downloading data
- 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."
- Invalid properties blocking startup of AWSE instance
- 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."
- Dremio Cloud - EC2 System Logs and Dremio Node Diagnostics Results
- Use of colon in S3 pathnames causes "Relative path in absolute URI" error
- Jobs failing with NessieReferenceConflictException "Retry-Failure during commit"
- Dremio Cloud - Error: The engine 'preview' has been deleted
- Dremio Cloud - "An unexpected error has occurred" or "Unable to communicate with Dremio" Errors
- Arrow Flight Driver Install Failure on MacOS
- Reflections not building after upgrading to v21 or beyond
- When deploying with dremio helm chart Zookeeper image fills up disk in kubernetes
- Dremio coordinator fails to start after enabling Web Server Encryption on port 443
- Setting Stack Size for queries failing with StackOverflowError
- Unable to set STATE parameter when using OpenID for SSO
- OUT_OF_MEMORY_ERROR on Hash Joins
- SYSTEM ERROR: HadoopIllegalArgumentException: Invalid buffer, not of length 635708
- UNSUPPORTED_OPERATION ERROR: Field [<fieldname>] has incompatible types in file and table.
- Arrow Flight python example error "OSError: gRPC returned unavailable error..."
- Auto generated self signed certificates and renewal
- Dremio Cloud - "Scaling up the engine replicas failed, please check the engine scaling events page for more details"
- Dremio JVM not selecting the G1GC collector