mlbiscoc opened a new pull request, #4429:
URL: https://github.com/apache/solr/pull/4429
`testDistributedQueryDoesNotReadFromZk` is a flaky test on Crave and
Jenkins. I am not able to reproduce this locally but the error is:
```
2> 38735 INFO
(TEST-DistributedQueryComponentOptimizationTest.testDistributedQueryDoesNotReadFromZk-seed#[2DA40BF573442949])
[] o.a.s.SolrTestCaseJ4 ###Ending testDistributedQueryDoesNotReadFromZk
> org.apache.solr.client.solrj.RemoteSolrException: Error from server
at
http://127.0.0.1:46591/solr/optimize/select?q=*%3A*&collection=optimize%2CsecondColl&wt=javabin:
org.apache.solr.common.SolrException: no active servers hosting shard:
secondColl_shard1
```
My suspicion is that there is a race condition making it flaky where the
jetty node has not yet seen the updated state of the collection that it is
ready but the client has because we were waiting on separate `zkStateReader`
which is separate from the cached state from the actually jetty node and
collection. So instead, we wait on that jetty nodes ready state using it's
zkStateReader and not clients.
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