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https://issues.apache.org/jira/browse/SOLR-9030?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Steve Rowe resolved SOLR-9030.
------------------------------
       Resolution: Fixed
    Fix Version/s: 5.5.2
                   5.6

> The 'downnode' command can trip asserts in ZkStateWriter
> --------------------------------------------------------
>
>                 Key: SOLR-9030
>                 URL: https://issues.apache.org/jira/browse/SOLR-9030
>             Project: Solr
>          Issue Type: Bug
>          Components: SolrCloud
>            Reporter: Shalin Shekhar Mangar
>            Assignee: Shalin Shekhar Mangar
>             Fix For: 5.6, 5.5.2, master (7.0), 6.1, 6.0.1
>
>         Attachments: SOLR-9030.patch, SOLR-9030.patch
>
>
> While working on SOLR-9014 I came across a strange test failure.
> {code}
>    [junit4] ERROR   16.9s | 
> AsyncCallRequestStatusResponseTest.testAsyncCallStatusResponse <<<
>    [junit4]    > Throwable #1: 
> com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an 
> uncaught exception in thread: Thread[id=46, 
> name=OverseerStateUpdate-95769832112259076-127.0.0.1:51135_z_oeg%2Ft-n_0000000000,
>  state=RUNNABLE, group=Overseer state updater.]
>    [junit4]    >      at 
> __randomizedtesting.SeedInfo.seed([91F68DA7E10807C3:CBF7E84BCF328A1A]:0)
>    [junit4]    > Caused by: java.lang.AssertionError
>    [junit4]    >      at 
> __randomizedtesting.SeedInfo.seed([91F68DA7E10807C3]:0)
>    [junit4]    >      at 
> org.apache.solr.cloud.overseer.ZkStateWriter.writePendingUpdates(ZkStateWriter.java:231)
>    [junit4]    >      at 
> org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:240)
>    [junit4]    >      at java.lang.Thread.run(Thread.java:745)
> {code}
> The underlying problem can manifest by tripping the above assert or a 
> BadVersionException as well. I found that this was introduced in SOLR-7281 
> where a new 'downnode' command was added.



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