1. Yes, it's depends on instance type. Generally, number of map slots +
number of reduce slots = number of ECU, number of map slots / number of
reduce slots = 3. You can customize these numbers.
2. Yes, Number of nodes * Running hours * Price per EMR node per hour (EMR
node is a little bit more
from amazon web site:
http://aws.amazon.com/elasticmapreduce/faqs/#hive-8
Q: When should I use Hive vs. PIG?
Hive and PIG both provide high level data-processing languages with support
for complex data types for operating on large datasets. The Hive language
is a variant of SQL and so is more
was also thinking that pig optimizer is better than hive optimizer.
Regards
Abhi
Sent from my iPhone
On Oct 3, 2012, at 7:15 PM, TianYi Zhu tianyi@facilitatedigital.com
wrote:
from amazon web site:
http://aws.amazon.com/elasticmapreduce/faqs/#hive-8
Q: When should I use Hive
Hi Charles,
map/reduce(jobtracker/tasktrackers, localhost:50030) is based on
hdfs(namenode/datanodes, localhost:50070) or local file system.
It seems there is something wrong with the hdfs, so the map/reduce is
blocked and shows INITIALIZING, please check the log of namenode(
