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https://issues.apache.org/jira/browse/KNOX-2701?focusedWorklogId=706895&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-706895
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ASF GitHub Bot logged work on KNOX-2701:
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Author: ASF GitHub Bot
Created on: 11/Jan/22 14:40
Start Date: 11/Jan/22 14:40
Worklog Time Spent: 10m
Work Description: smolnar82 opened a new pull request #529:
URL: https://github.com/apache/knox/pull/529
## What changes were proposed in this pull request?
Improved service discovery for Impala: Impala Daemon roles with
`EXECUTOR_ONLY` specialization are not included in any topologies.
## How was this patch tested?
Added JUnit tests and executed manual testing using a test CM cluster.
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Issue Time Tracking
-------------------
Worklog Id: (was: 706895)
Remaining Estimate: 0h
Time Spent: 10m
> Knox topology for Impala includes non-coordinator hosts
> -------------------------------------------------------
>
> Key: KNOX-2701
> URL: https://issues.apache.org/jira/browse/KNOX-2701
> Project: Apache Knox
> Issue Type: Bug
> Components: Server
> Affects Versions: 1.6.0
> Reporter: Sandor Molnar
> Priority: Major
> Fix For: 2.0.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Currently, all impala daemons are included in the Knox topology when only
> Impala _coordinator_ daemons should be included. Impala daemons can be of 3
> types:
> * COORDINATOR_ONLY
> * EXECUTOR_ONLY
> * NO_SPECIALIZATION (acts as both coordinator and executor)
> The type of a given _impalad_ is specified by the CM config
> "{{{}impalad_specialization{}}}". Only impala daemons with type
> {{COORDINATOR_ONLY}} or {{NO_SPECIALIZATION}} should be included in the Knox
> topology when discovering a CM cluster.
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