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Brock Noland commented on HIVE-9153: ------------------------------------ Nice, I see the perf improvement but I don't get the changes to {{Utilities.getBaseWork}}? > Evaluate CombineHiveInputFormat versus HiveInputFormat [Spark Branch] > --------------------------------------------------------------------- > > Key: HIVE-9153 > URL: https://issues.apache.org/jira/browse/HIVE-9153 > Project: Hive > Issue Type: Sub-task > Components: Spark > Affects Versions: spark-branch > Reporter: Brock Noland > Assignee: Rui Li > Attachments: HIVE-9153.1-spark.patch, screenshot.PNG > > > The default InputFormat is {{CombineHiveInputFormat}} and thus HOS uses this. > However, Tez uses {{HiveInputFormat}}. Since tasks are relatively cheap in > Spark, it might make sense for us to use {{HiveInputFormat}} as well. We > should evaluate this on a query which has many input splits such as {{select > count(\*) from store_sales where something is not null}}. -- This message was sent by Atlassian JIRA (v6.3.4#6332)