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Helen Holzbaur

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  • "Error: could not login. Try again later." when logging into UI

    Problem User cannot log in with SSO token. Answer There are several reasons an SSO token could fail. Is the token correct? Has the token expired? Has the user cleared their browser cache? It might...

  • Increasing Logging Verbosity of an ODAS cluster

    Problem The default logging level for an ODAS cluster does not always provide enough detail to troubleshoot performance issues. Answer NOTES Be thoughtful of the logging level that you set. Not on...

  • Syntax Error Creating View

      Problem User received Syntax error creating a view Error: ERROR:root:Response: {"message": "Call to execute_ddl failed: Could not execute ddl.\nDetail: AnalysisException: Syntax error in line 15:...

  • User gets "Host not reachable" errors from a valid query

    Problem A user runs a request on a healthy ODAS cluster but receives "Host not reachable" errors. Cause When a worker node is removed from an ODAS cluster with the kubectl delete node <node> comman...

  • Problems accessing Parquet files with complex MAP data types

    Problem ODAS Workers restart and produce a core dump when queries access tables that are backed by Parquet files and use certain, complex MAP data types in their schema. Answer Okera provides limit...

  • Automatic Partition Recovery

     Problem The planner log is displaying partition recovery every minute. The entries indicate recovery is failing and there is a partition recovery queue. proc stderr: E1004 18:59:05.176966 238 Pa...

  • Read timeout on large tables

    Question What is the effect of altering "recordservice.worker.rpc.timeoutMs"? Symptom In Hive, run this command on a ODAS enabled EMR cluster: hive> SHOW PARTITIONS <table_name>; Confirm you see th...

  • Validating Cluster Services Using Logs

    Question How can I validate that all of my ODAS services are running through system logs? Background A Deployment Manager (DM) is launched first on an EC2 instance. The DM is used to launch the ot...

  • Health Check API - Implementation

     Question: How does the REST Health Check API work under the hood? What exactly does it check? And does it ever return anything other than "health check: ok"?  Example: If one of the services' hea...

  • Dataset partition and "no data found"

    Problem Can any hive dataset be partitioned? When I partition a dataset on a field in the middle of the row, the data preview results in a "no data found" error. If I remove the PARTITIONED BY clau...