[jira] [Created] (IMPALA-9299) Node Blacklisting: Coordinators should blacklist unhealthy nodes

["Sahil Takiar (Jira)" <ji...@apache.org>]

Sahil Takiar created IMPALA-9299:
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             Summary: Node Blacklisting: Coordinators should blacklist unhealthy nodes
                 Key: IMPALA-9299
                 URL: https://issues.apache.org/jira/browse/IMPALA-9299
             Project: IMPALA
          Issue Type: New Feature
          Components: Backend
            Reporter: Sahil Takiar
            Assignee: Thomas Tauber-Marshall


Top level JIRA for Node Blacklisting.

High level description of node blacklisting, from IMPALA-8339:
{quote}
This patch adds the concept of a blacklist of executors to the
coordinator, which removes executors from consideration for query
scheduling. Blacklisting decisions are local to a given coordinator
and are not included in statestore updates.

The intention is to allow coordinators to be more aggressive about
deciding that an exeutor is unhealthy or unavailable, to minimize
failed queries in environments where cluster membership may be more
variable, rather than having to wait on the statestore heartbeat
mechanism to decide that the executor is down.
{quote}



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