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Assignment Locality for Impala has been disabled

Assignment Locality for Impala has been disabled

Contributor

Hi ,

 

I am getting this warning or message on my cluster under impala service:

 

100.00% of assignments operating on local data over the past 15 minute(s). 0 local assignments. 0 total assignments. At least 10 assignments required for this test to return a value.

 

In such case what I have to do and how to enable the assignemnt locality , also what will be the use of it ?

3 REPLIES 3

Re: Assignment Locality for Impala has been disabled

Master Collaborator

Hi Jais,

 

is this reported by Cloudera Manager? I'm not very familiar with that message, but my interpretation is that no queries have scanned data (0 total assignments), so there is no way to judge whether can ranges are assigned locally or not.

 

Alex

Highlighted

Re: Assignment Locality for Impala has been disabled

Super Collaborator

Hi @Jais had you get an answer to this?

Re: Assignment Locality for Impala has been disabled

Expert Contributor

Hi Fawze,

 

I think Alex's response was correct. That message sounds like a warning from CM, and it indicates that no queries have been running, so it cannot compute the ratio of local vs remote assignments. You can run a couple of queries and eventually it should go away. Once you don't run queries for 15 minutes it may re-appear.

 

Where did you observe the message?

 

Cheers, Lars