Advanced Amazon Redshift: Performance Tuning Reviews

Faisal A. · Reviewed over 7 years ago

Not enough time.

Divya M. · Reviewed over 7 years ago

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. · Reviewed over 7 years ago

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. · Reviewed over 7 years ago

Walid L. · Reviewed over 7 years ago

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

Phung L. · Reviewed over 7 years ago

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. · Reviewed over 7 years ago

Nikolas A. · Reviewed over 7 years ago

no

varun k. · Reviewed over 7 years ago

Emmanuel A. · Reviewed over 7 years ago

Emmanuel A. · Reviewed over 7 years ago

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

Makoto S. · Reviewed over 7 years ago

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

Leo M. · Reviewed over 7 years ago

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

Federico H. · Reviewed over 7 years ago

Elliott K. · Reviewed over 7 years ago

Naresh C. · Reviewed over 7 years ago

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. · Reviewed over 7 years ago

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. · Reviewed over 7 years ago

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

Richard W. · Reviewed over 7 years ago

Michelangelo P. · Reviewed over 7 years ago

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

Donald M. · Reviewed over 7 years ago

Fabian M. · Reviewed over 7 years ago

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

Khwunchai J. · Reviewed over 7 years ago

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. · Reviewed over 7 years ago

Can't connect, some sort of JDBC connection error

Dom P. · Reviewed over 7 years ago