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https://issues.apache.org/jira/browse/IMPALA-5043?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong reassigned IMPALA-5043:
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Assignee: Tim Armstrong
> Flag when Impala daemon is disconnected from statestore
> -------------------------------------------------------
>
> Key: IMPALA-5043
> URL: https://issues.apache.org/jira/browse/IMPALA-5043
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Affects Versions: Impala 2.6.0
> Reporter: Thomas Scott
> Assignee: Tim Armstrong
> Priority: Major
> Labels: admission-control, resource-management, supportability
>
> When (for whatever reason) one or more daemons are disconnected from the
> statestore the admission control data held on the daemon goes stale. This can
> lead to the daemon accepting queries when there is not capacity or rejecting
> queries when there is capacity.
> For example, a pool somepool has a limit of 10 concurrent queries and is at
> that limit when a daemon is disconnected from the statestore. Even when other
> queries in somepool finish and the pool is now empty the disconnected daemon
> will report the following when new queries are executed:
> ERROR: Admission for query exceeded timeout 60000ms. Queued reason: number of
> running queries 10 is over limit 10
> Could we have some warning to say that the admission control data is stale
> here?
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