Support Questions
Find answers, ask questions, and share your expertise
Announcements
Alert: Welcome to the Unified Cloudera Community. Former HCC members be sure to read and learn how to activate your account here. Want to know more about what has changed? Check out the Community News blog.

Impalad stops responding to odbc requests after some time

Impalad stops responding to odbc requests after some time

New Contributor

We have an CDH 5.8.3 cluster. We use tableau 10.2.2 with the latest Impala ODBC driver.

After some hours of work the Tableau datasource, which is one node of the cluster stops accepting new connections.

If I point to another node it will work normally, and also the original node which I was referring to will execute query fragments.

It looks like we are filling up something on hiveserver2 part of impalad. I tried to increase fe_service_threads to 512 but it didn't solve the issue.

Do I need to increase also the be_service_threads? I understood that it is useless.

 

Is there anything I can look at to understand what limit I'm touching?

 

Chris

2 REPLIES 2

Re: Impalad stops responding to odbc requests after some time

Guru
What error do you get when you said "stops accepting new connections"?

Have you check impala daemon log to see what it was complaining?

If you try to connect that particular impala daemon from impala-shell, do you get the same error?

Re: Impalad stops responding to odbc requests after some time

New Contributor

There is no error in the log,

and yes I can connect through the Impala shell.