https://community.cloudera.com/t5/Archives-of-Support-Questions/What-is-the-term-Vectorization-used-while-update-delete/m-p/142200#M23644 <P>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.</P><P><A href="https://cwiki.apache.org/confluence/display/Hive/Vectorized+Query+Execution" target="_blank">https://cwiki.apache.org/confluence/display/Hive/Vectorized+Query+Execution</A></P><P>Not sure about Update Deletes, they might use Vectorization for some functions there too.</P> Thu, 24 Mar 2016 20:06:36 GMT bleonhardi 2016-03-24T20:06:36Z https://community.cloudera.com/t5/Archives-of-Support-Questions/What-is-the-term-Vectorization-used-while-update-delete/m-p/142199#M23643 Thu, 24 Mar 2016 19:31:50 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/What-is-the-term-Vectorization-used-while-update-delete/m-p/142199#M23643 mhdeshmukh22 2016-03-24T19:31:50Z https://community.cloudera.com/t5/Archives-of-Support-Questions/What-is-the-term-Vectorization-used-while-update-delete/m-p/142200#M23644 <P>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.</P><P><A href="https://cwiki.apache.org/confluence/display/Hive/Vectorized+Query+Execution" target="_blank">https://cwiki.apache.org/confluence/display/Hive/Vectorized+Query+Execution</A></P><P>Not sure about Update Deletes, they might use Vectorization for some functions there too.</P> Thu, 24 Mar 2016 20:06:36 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/What-is-the-term-Vectorization-used-while-update-delete/m-p/142200#M23644 bleonhardi 2016-03-24T20:06:36Z https://community.cloudera.com/t5/Archives-of-Support-Questions/What-is-the-term-Vectorization-used-while-update-delete/m-p/142201#M23645 <P>I agree with <A rel="user" href="https://community.cloudera.com/users/168/bleonhardi.html" nodeid="168">@Benjamin Leonhardi</A>. Provide the log file because vectorization occurs during opertaions like scans, filters, aggregates, and joins.</P> Thu, 24 Mar 2016 21:46:14 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/What-is-the-term-Vectorization-used-while-update-delete/m-p/142201#M23645 sunile_manjee 2016-03-24T21:46:14Z https://community.cloudera.com/t5/Archives-of-Support-Questions/What-is-the-term-Vectorization-used-while-update-delete/m-p/142202#M23646 <P>I wanted to understand the concept for vectorization.I got it from above link.Thanks</P> Thu, 24 Mar 2016 22:11:00 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/What-is-the-term-Vectorization-used-while-update-delete/m-p/142202#M23646 mhdeshmukh22 2016-03-24T22:11:00Z