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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2021/01/18 02:08:16 UTC
[GitHub] [druid] linehrr opened a new issue #10773: TieredBrokerHostSelector - No brokerServiceName found for datasource
linehrr opened a new issue #10773:
URL: https://github.com/apache/druid/issues/10773
### Affected Version
0.18.1
### Description
router logs have error like this:
`2021-01-18T02:00:54,040 ERROR [qtp1532989443-88] org.apache.druid.server.router.TieredBrokerHostSelector - No brokerServiceName found for datasource[Report], intervals[[2021-01-14T09:00:00.000Z/2021-01-14T10:00:00.000Z]]. Using default[druid/broker].`
no idea about how this happened. and there are no other logs that's useful.
queries most of the time succeeded. because looks like `using default[druid/broker]` works. however some queries sporadically fails, return code is HTTP 503.
other than this we don't see other error logs, so we thought this could be related.
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[GitHub] [druid] machine424 commented on issue #10773: TieredBrokerHostSelector - No brokerServiceName found for datasource
Posted by GitBox <gi...@apache.org>.
machine424 commented on issue #10773:
URL: https://github.com/apache/druid/issues/10773#issuecomment-818684361
I think you need to set `druid.router.tierToBrokerMap`, see [here](https://druid.apache.org/docs/latest/configuration/index.html#runtime-configuration) otherwise the router will "not find" the corresponding broker to take care of your query in the map, log an error and fallback to `druid.router.defaultBrokerServiceName`
relevant code: https://github.com/apache/druid/blob/druid-0.20.2/server/src/main/java/org/apache/druid/server/router/TieredBrokerHostSelector.java#L192-L244 (druid 0.20.2)
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