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https://issues.apache.org/jira/browse/HIVE-9110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14274792#comment-14274792
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Rui Li commented on HIVE-9110:
------------------------------
In spark standalone mode, the executor won't have hadoop native libraries added
to their {{java.library.path}} by default, which means it can't use the HDFS
short-circuit read feature. To enable SCR, we can add the native libraries to
{{spark.executor.extraLibraryPath}}.
> Performance of SELECT COUNT(*) FROM store_sales WHERE ss_item_sk IS NOT NULL
> [Spark Branch]
> -------------------------------------------------------------------------------------------
>
> Key: HIVE-9110
> URL: https://issues.apache.org/jira/browse/HIVE-9110
> Project: Hive
> Issue Type: Sub-task
> Components: Spark
> Affects Versions: spark-branch
> Reporter: Brock Noland
> Assignee: Rui Li
>
> The query
> {noformat}
> SELECT COUNT(*) FROM store_sales WHERE ss_item_sk IS NOT NULL
> {noformat}
> could benefit from performance enhancements.
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