Created 03-24-2016 12:31 PM
Created 03-24-2016 01:06 PM
Can you paste the actual message? Normally Vectorization is Hive grouping together x ( 1024 ) records to run operations at them at once. This is much more efficient than doing operations row by row on modern CPUs because of cache settings and compiler optimizations.
https://cwiki.apache.org/confluence/display/Hive/Vectorized+Query+Execution
Not sure about Update Deletes, they might use Vectorization for some functions there too.
Created 03-24-2016 01:06 PM
Can you paste the actual message? Normally Vectorization is Hive grouping together x ( 1024 ) records to run operations at them at once. This is much more efficient than doing operations row by row on modern CPUs because of cache settings and compiler optimizations.
https://cwiki.apache.org/confluence/display/Hive/Vectorized+Query+Execution
Not sure about Update Deletes, they might use Vectorization for some functions there too.
Created 03-24-2016 03:11 PM
I wanted to understand the concept for vectorization.I got it from above link.Thanks
Created 03-24-2016 02:46 PM
I agree with @Benjamin Leonhardi. Provide the log file because vectorization occurs during opertaions like scans, filters, aggregates, and joins.