question Refreshing multiple partitions in single query in Impala in Archives of Support Questions (Read Only)

Refreshing multiple partitions in single query in Impala

ssrkaushik — Fri, 16 Sep 2022 13:32:49 GMT

Is there a way we can refresh multiple partitions in a single statement?.

What I am trying to execute is something like "refresh partition ( col in ('val1','val2',val3'......))".

So that I do not have to fire multiple refresh queries. If it is not present, are there plans to bring this feature anytime in the near future?.

Re: Refreshing multiple partitions in single query in Impala

Tim Armstrong — Fri, 03 Aug 2018 16:50:18 GMT

We looked at adding this a while back but ran into some technical issues around whether it should discover new partitions that would match the predicates: https://issues.apache.org/jira/browse/IMPALA-4105

We have a few people actively working on REFRESH/INVALIDATE and related issues, hoping to drastically improve the experience there.

Re: Refreshing multiple partitions in single query in Impala

recurse — Fri, 21 Sep 2018 08:08:38 GMT

I would like this too. My use case is new data files written to existing partitions, so I'm not concerned with partition discovery.

Even having

REFRESH tabA
  PARTITION (...)
  PARTITION (...)
  PARTITION (...)

will be useful