Hive Explain Plan Not Optimized By Cbo at Willian Esquivel blog

Hive Explain Plan Not Optimized By Cbo. Validate the cbo with explain plans: Overall it is not at all a best practice to put a separate where clause in a join operation because the filter will be applied after the join operation and as such. The seconde one has textinputformat, with partitions like this : Hive provides an explain command that shows the execution plan for a query. Hive does not use the cbo until you generate column statistics for tables. Latest version of hive uses cost based optimizer (cbo) to increase the hive query performance. If you are getting message plan not optimized by cbo when your table has statistics, please, check your hive log and look. Even if we would expect the hive optimizer to be clever and apply predicate pushdown, explain plans are different and the one with the where clause look less efficient on the paper.

Hive does not use the cbo until you generate column statistics for tables. Overall it is not at all a best practice to put a separate where clause in a join operation because the filter will be applied after the join operation and as such. The seconde one has textinputformat, with partitions like this : Validate the cbo with explain plans: Even if we would expect the hive optimizer to be clever and apply predicate pushdown, explain plans are different and the one with the where clause look less efficient on the paper. Hive provides an explain command that shows the execution plan for a query. If you are getting message plan not optimized by cbo when your table has statistics, please, check your hive log and look. Latest version of hive uses cost based optimizer (cbo) to increase the hive query performance.

Understanding Explain Plan in Oracle Reading with Example

Hive Explain Plan Not Optimized By Cbo Validate the cbo with explain plans: The seconde one has textinputformat, with partitions like this : Hive provides an explain command that shows the execution plan for a query. Latest version of hive uses cost based optimizer (cbo) to increase the hive query performance. Hive does not use the cbo until you generate column statistics for tables. Overall it is not at all a best practice to put a separate where clause in a join operation because the filter will be applied after the join operation and as such. If you are getting message plan not optimized by cbo when your table has statistics, please, check your hive log and look. Even if we would expect the hive optimizer to be clever and apply predicate pushdown, explain plans are different and the one with the where clause look less efficient on the paper. Validate the cbo with explain plans: