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https://issues.apache.org/jira/browse/HIVE-8808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14207169#comment-14207169
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Sushanth Sowmyan commented on HIVE-8808:
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+cc [~elserj] for an accumulo perspective on this.

My personal preference is that in getInputFormatFromCache, if we detect that 
the class is a hbase input format, then we return new instance and not populate 
the cache. I did something similar recently in HIVE-8704 for the output side 
for PTOF-based outputformats.

> HiveInputFormat caching cannot work with all input formats
> ----------------------------------------------------------
>
>                 Key: HIVE-8808
>                 URL: https://issues.apache.org/jira/browse/HIVE-8808
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Brock Noland
>
> In {{HiveInputFormat}} we implement instance caching (see 
> {{getInputFormatFromCache}}). In HS2, this assumes that InputFormats are 
> stateless but I don't think this assumption is true, especially with regards 
> to HBase.



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