I have a Python script that runs statistical analysis and trained deep learning models on input data. The data size is fairly small (~5Mb) however the ...
I have a Python script that runs statistical analysis and trained deep learning models on input data. The data size is fairly small (~5Mb) however the ...
Lets assume that I have an input DataStream and want to implement some functionality that requires "memory" so I need ProcessFunction that gives me ac ...
I have a directory "SmallFiles" that contains 8 files, I archived them using "hadoop archive -archiveName myArch.har -p /Files/SmallFiles /Files" then ...
I am reading up on spark from here At one point the blog says: consider an app that wants to count the occurrences of each word in a corpus and p ...
My collection of products consists of _id, product/title, product/price and reviews. Reviews is an array with all reviews for that specific product. I ...
My collection looks something like this: My goal is to find if there are any products that have more than one price. Values of the key "product/pri ...
I have found that debugging and testing a MapReduce project challenging. For debugging and testing, I usually get the script above and put it insid ...
I am making a map reduce program in Java that has 4 steps. each step is operating on the output of the previous step. I ran those steps locally and m ...
I am getting a weird error while executing a mapreduce job in my Hadoop cluster. This error is intermittent. Sometimes, it fails the mapper and someti ...
I am trying to understand hash shuffle in Spark. I am reading this article Hash Shuffle: Each mapper task creates separate file for each separate ...
I am getting the following error while executing a mapreduce job in my hadoop cluster (distributed cluster). I found the error below in the applicati ...
We have we need to get I tried to do it through map, but it turned out to be some kind of crap ...
I wrote the code below to return a table t using function mr. But joining table t with an in-memory table raises an error requiring both tables to ...
MapReduce job is failing with following error even though JAVA_HOME is set. I am trying to setup hadoop (3.3.4) on my Mac M1. I have set JAVA_HOME ...
Lets imagine we have a number of records with attributes: id, start_day, end_date, sum. These records have different periods defined by start and end ...
I have tens of thousands files in dir demotxt like: demotxt/ aa.txt this is aaa1 this is aaa2 this is aaa3 ...
I have a list like: and I applied the following map functions to map each row with the # of occurrences: map(lambda x: ((x.split(',')[0], x.split( ...
I have an arrangement that I need to take an average of a sum based on the user who attended an activity I have an array where there is a list of act ...
enter image description here there is an exception ,I can't start hadoop , ...
I am trying to write a code that would calculate average temperature (reducer.py) based on ncdc weather. ...