MR3 is a new execution engine, so there are quite a few differences on the
backend side. Some of the differences are:
1. Easier to install and run (e.g., no need to upgrade Hadoop)
2. Faster (because Hive on MR3 supports LLAP mode and runs as fast as
Hive-LLAP)
3. More efficient - unlike Tez, a
Nice reading. Can you give a comparison on Hive on MR3 and Hive on Tez?
Thanks
On Sat, Apr 2, 2022 at 7:17 PM Sungwoo Park wrote:
> Hi Spark users,
>
> We have published an article where we evaluate the performance of Spark
> 2.3.8 and Spark 3.2.1 (along with Hive 3). If interested, please
Hi Spark users,
We have published an article where we evaluate the performance of Spark
2.3.8 and Spark 3.2.1 (along with Hive 3). If interested, please see:
https://www.datamonad.com/post/2022-04-01-spark-hive-performance-1.4/
--- SW
https://sparkbyexamples.com/pyspark/pyspark-cast-column-type/
lør. 2. apr. 2022 kl. 04:10 skrev ayan guha :
> Please use cast. Also I would strongly recommend to go through spark doco,
> its pretty good.
>
> On Sat, 2 Apr 2022 at 12:43 pm, wrote:
>
>> Hi
>>
>> I got a dataframe object from
