+1

Can you raise one PR for this.

Regards
Liang


bhavya411 wrote
> Hi All,
> 
> Presto 0.186 version has as lot of improvements that will increase the
> performance and improve the reliability. Some of the major issues and
> improvements are listed below.
> 
> 
>    - Fix excessive GC overhead caused by map to map cast.
>    - Fix issue that may cause queries containing expensive functions, such
>    as regular expressions, to continue using CPU resources even after they
> are
>    killed.
>    - Fix performance issue caused by redundant casts
>    - Fix leak in running query counter for failed queries. The counter
>    would increment but never decrement for queries that failed before
> starting.
>    - Reduce memory usage when building data of VARCHAR or VARBINARY types.
>    - Estimate memory usage for GROUP BY more precisely to avoid out of
>    memory errors.
>    - Add Spill to Disk
> <https://prestodb.io/docs/current/admin/spill.html>
>    for joins.
> 
> Currently the Presto version that we are using in Carbondata is 0.166 , I
> would like to suggest to upgrade it to 0.186. Please let me know what the
> group thinks about it.
> 
> 
> Regards
> 
> Bhavya





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