Quanlong Huang created IMPALA-15234:
---------------------------------------
Summary: Provide a way to clear HBO cache
Key: IMPALA-15234
URL: https://issues.apache.org/jira/browse/IMPALA-15234
Project: IMPALA
Issue Type: New Feature
Components: Backend
Reporter: Quanlong Huang
We should provide a command (in impala-shell) or WebUI endpoint to clear HBO
stats, in case when "bad" stats are stored, to prevent poisoning future query
plans.
In e2e tests while testing expected HBO stats are stored, we also need this to
clear the cache, to make sure they are not accidentially stored by previous
queries.
The HBO cache are keyed by hash strings so it's hard to identify which keys
belong to a specific table. As a first step, we should at least support
clearing the entire cache.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
