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https://issues.apache.org/jira/browse/SOLR-8129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15112775#comment-15112775
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Yonik Seeley commented on SOLR-8129:
------------------------------------

Opened SOLR-8586 for hashing all versions.

bq. These kind of reorders don't seem that common?

Seems way too common on HDFS (on my linux box at least).  

Even with SOLR-8586, big enough reorders can still cause other issues, such as 
going beyond our delete window.  That would cause shards to get out-of-sync 
even when all the shards are up and live (and hence we wouldn't catch it until 
the next time we did a version-hash for some reason).

> HdfsChaosMonkeyNothingIsSafeTest failures
> -----------------------------------------
>
>                 Key: SOLR-8129
>                 URL: https://issues.apache.org/jira/browse/SOLR-8129
>             Project: Solr
>          Issue Type: Bug
>            Reporter: Yonik Seeley
>         Attachments: fail.151005_064958, fail.151005_080319
>
>
> New HDFS chaos test in SOLR-8123 hits a number of types of failures, 
> including shard inconsistency.



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