Wenzhe Zhou created IMPALA-12321:
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Summary: Fix the race condition for updating active catalogd when
CatalogD HA is enabled
Key: IMPALA-12321
URL: https://issues.apache.org/jira/browse/IMPALA-12321
Project: IMPALA
Issue Type: Improvement
Components: Backend
Affects Versions: Impala 4.3.0
Reporter: Wenzhe Zhou
Assignee: Wenzhe Zhou
Fix For: Impala 4.3.0
When CatalogD HA is enabled, statestored sends the address of current active
catalogd to coordinators and catalogds during registration, or a new active
catalogd is elected. Statestored sends the active catalogd in two different
kinds of RPCs. If there are more than one election changes in short time,
coordinators and catalogds could receive RPCs in the order which is different
from the changing order on statestore. To make coordinators and catalogds to
have same view as statestore, we have to avoid to overwrite the later version
of active catalogd with previous change.
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