Support Questions

Find answers, ask questions, and share your expertise
Check out our newest addition to the community, the Cloudera Data Analytics (CDA) group hub.

Impala queries error



I am trying to run various impala queries in HUE but every time I got this error message:






SQL Error [500312] [HY000]: [Cloudera][ImpalaJDBCDriver](500312)
Error in fetching data rows: Disk I/O error on wn01:
Failed to open HDFS file    <file's name > ¶Error(255):
Unknown error 255¶Root cause: Asn1Exception: Identifier doesn't match expected value (906)¶;







I run invalidate metadata on the table but this error continues. 
Queries are ok, because last week they ran well.


Thanks in advance


Super Collaborator

The error indicates an issue with Kerberos. If things ran fine last week, perhaps your Kerberos ticket expired and needs to be renewed. 

Rising Star



Could you please connect to impala-shell and submit the same query just to bee confirmed that the error is not from impala.

Take a Tour of the Community
Don't have an account?
Your experience may be limited. Sign in to explore more.