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https://issues.apache.org/jira/browse/SOLR-8309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15009991#comment-15009991
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Varun Thacker commented on SOLR-8309:
-------------------------------------
This is an excerpt from a successful test run:
{code}
[junit4] 2> 283122 INFO
(zkCallback-171-thread-1-processing-n:127.0.0.1:56703_u_rq)
[n:127.0.0.1:56703_u_rq ] o.a.s.c.c.ZkStateReader Updating data for football
from 6 to 7
[junit4] 2> 283122 INFO
(zkCallback-175-thread-1-processing-n:127.0.0.1:56707_u_rq)
[n:127.0.0.1:56707_u_rq ] o.a.s.c.c.ZkStateReader Updating data for football
from 6 to 7
[junit4] 2> 283176 INFO
(TEST-TestRandomRequestDistribution.test-seed#[A0F2F7B493EFD7DE])
[n:127.0.0.1:56637_u_rq c:collection1 s:shard2 r:core_node3 x:collection1]
o.a.s.c.AbstractFullDistribZkTestBase Firing query against
path=http://127.0.0.1:56707/u_rq/football
{code}
This is an excerpt from build #624
{code}
[junit4] 2> 555088 INFO
(TEST-TestRandomRequestDistribution.test-seed#[A0F2F7B493EFD7DE]) [ ]
o.a.s.c.AbstractFullDistribZkTestBase Firing query against
path=http://127.0.0.1:59394/u_rq/football
[junit4] 2> 555091 INFO
(zkCallback-357-thread-1-processing-n:127.0.0.1:43311_u_rq)
[n:127.0.0.1:43311_u_rq ] o.a.s.c.c.ZkStateReader Updating data for football
from 6 to 7
[junit4] 2> 555091 INFO
(zkCallback-353-thread-1-processing-n:127.0.0.1:59394_u_rq)
[n:127.0.0.1:59394_u_rq ] o.a.s.c.c.ZkStateReader Updating data for football
from 6 to 7
{code}
The difference seems to be that the zkCallback happens after the query is fired
in the failed test runs ( same in build 3774 ) vs before in successful test
runs.
So essentially the cluster state does not know about the change when the query
is fired hence it executes it against the down replica.
Telling the test to sleep for sometime before executing the query will probably
solve the problem but is there a better way to solve the problem?
> TestRandomRequestDistribution test failures
> -------------------------------------------
>
> Key: SOLR-8309
> URL: https://issues.apache.org/jira/browse/SOLR-8309
> Project: Solr
> Issue Type: Bug
> Reporter: Varun Thacker
> Assignee: Varun Thacker
> Attachments: build-3774.txt, build-624.txt
>
>
> There have been a couple of Jenkins failures for
> TestRandomRequestDistribution .
> Creating a Jira to track it
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