Advanced Amazon Redshift: Performance Tuning avaliações

Faisal A. · Revisado há almost 8 years

Not enough time.

Divya M. · Revisado há almost 8 years

The scripts took so long to run that I hardly had enough time to finish the lab. I found myself just copying, pasting, and running sql, and not actually reading and learning the content. Please add at least another 30 minutes to this lab.

Bryce C. · Revisado há almost 8 years

this lab sucks over an hour waiting for things to load? I didn't even have enough time to finish the compression piece 10 minutes cloudformation 60 minutes run-sql 20 minutes analyzecompression.py we are intending to learn about redshift performance tuning but we spend most of this lab waiting around for these commands it would be great if restoring redshift from a snapshot would be faster than running all of these COPY commands http://docs.aws.amazon.com/redshift/latest/mgmt/managing-snapshots-console.html#snapshot-share another alternative might be to use the dc1.large nodes since they are SSD backed which should speed up the COPY's I realize to best see performance gains we'll need a certain scale of data, but perhaps the dataset could be trimmed as well. I can't even view the performance/query/load metrics in this lab: User fletcher is not authorized to 73a1973c-b75d-11e6-a3a6-efb208e3d1e9). Please check with your administrator. (Service: AmazonCloudWatch; Status Code: 403; Error Code: AccessDenied; Request ID: 73a1973c-b75d-11e6-a3a6-efb208e3d1e9) when we finally get to the content for this lesson, its good material, but seems pretty slim for the final course in the quest. it would be smart to include a link to AWS docs to learn more about query plans http://docs.aws.amazon.com/redshift/latest/dg/c-the-query-plan.html or queues http://docs.aws.amazon.com/redshift/latest/dg/cm-c-defining-query-queues.html instead of linking back to labs earlier in the quest http://i2.kym-cdn.com/entries/icons/original/000/000/063/Picture_2_c.jpg

fletcher d. · Revisado há almost 8 years

Walid L. · Revisado há almost 8 years

loading data takes many time. can we create the new cluster from a snapshot?

Phung L. · Revisado há almost 8 years

This lab does not give me enough time to iterate all tasks. Generating test data itself took almost 80% of whole lab time, which left no time for me to complete tasks...

Shun E. · Revisado há almost 8 years

Nikolas A. · Revisado há almost 8 years

no

varun k. · Revisado há almost 8 years

Emmanuel A. · Revisado há almost 8 years

Emmanuel A. · Revisado há almost 8 years

Time is not enough. Initial data upload and python transformation consume too much time and there are no time to throw query.

Makoto S. · Revisado há about 8 years

Java not installed on EC2 instance, Python modules not present on EC2 instance, data import takes about an hour

Leo M. · Revisado há about 8 years

Assessment score out of sync. Lab got not scored because of this.

Federico H. · Revisado há about 8 years

Elliott K. · Revisado há about 8 years

Naresh C. · Revisado há about 8 years

Lab time could be about 10-15 longer given all the time spent waiting. Also would be nice to have some explanation of the effect rebooting the cluster will have on the long running python compression analysis script

Jesper P. · Revisado há about 8 years

2 hours ... most of it spend waiting on data to be load (op compressed)... it would be so interesting if it wasn't so time wasting... topic is important and quite nicely covered .... but... god I', tired of watering ;]

Zbigniew S. · Revisado há about 8 years

WAY TOO MUCH TIME spent waiting for background tasks to complete. Not a good time management lab.

Richard W. · Revisado há about 8 years

Michelangelo P. · Revisado há about 8 years

The initial queries took waaayyyy too long to complete. Did not allocate enough time for this lab.

Donald M. · Revisado há about 8 years

Fabian M. · Revisado há about 8 years

I cannot finish the lab if I have to wait for an hour for a command.

Khwunchai J. · Revisado há about 8 years

Can't connect, some sort of JDBC connection error during initial 'manager driver' setup. WHen you complete and click Ok it errors out.

Dom P. · Revisado há about 8 years

Can't connect, some sort of JDBC connection error

Dom P. · Revisado há about 8 years