I am trying to download few files using 3 threads. my requirement is i want to achieve file download on 3 threads so that all files download 3 times in 3 different folders so that the files dont overwrite. I am using __counter to append 1,2,3 to the folders. Problem is if i give Thread count as 1 or 2 or 3 , it is behaving same in all the scenarios i.e. it always create two folders Folder1 and Folder2 and in all in folder1 it download all the files and in folder2 only last file gets downloaded with size as 0 KB.
Number of threads = 1
Attaching what i have tried so far-
Please try without counter function and with prefix, and two threads. I am guessing it based on the below information.
https://jmeter.apache.org/usermanual/component_reference.html#Save_Responses_to_a_file
Please note that Filename Prefix must not contain Thread related data,
so don't use any Variable (${varName}) or functions like
${__threadNum} in this field
Or try to keep some delay/pacing between two threads.
Hope this helps.
Update:-
Just give the folder path and file name without extension. It will save the with extension. I tried with image and it is save as Myfile1.jpeg
Related
Is there any processor in Nifi that waits for the all the files to arrive and then put those files into HDFS.
For example:
If there are total 5 files to be fetched using SFTP but we received only 3 files, I want NiFi to wait till 5 files arrived and then put those 5 files into HDFS using PUTHDFS.
Thank you for your anwsers
The issue is, how do you know all files have arrived? Is it always a static 5 files?
If it is absolutely always 5 files, then just use a MergeContent with a Minimum and Maximum Number of Entries set to 5. This means that all files will wait until there are exactly 5 files waiting to be merge.
But this is very inflexible to change.
Why do you need to wait for all 5 files before you put them into HDFS?
Are you trying to prevent a small files problem?
If so, you don't need to wait for all 5 files, just use a Merge and set a minimum file size to bucket files up to a minimum, with a worst-case time out.
Alternatively, the PutHDFS has a Conflict Resolution Strategy property which can be set to append as long as the filename is the same - you can just UpdateAttribute and set the filename to the same name, and then append the files whenever they arrive.
You can use List* processors with a Record Writer and use a MergeRecord processor to wait for a specific number of files.
Use a ListSFTP processor. Set the Record Writer attribute. You can use anyone.
Connect the success to a MergeRecord processor with maximum and minimum bin sizes to set to the number of files you want to wait for.
Now the merge relation will have a single flowfile containing the file listing. Split them to individual files and process them.
Have a look at Additional Details of ListSFTP processor. It details how you can wait for your batch to complete process.
I had many files which I got from the censor. Moreover, the files increase every hour. The files consist of 3 parts, rain_date_time. How can I open each file recursively to get what's inside the file and add it to database. I have found the way to read the file one by one, yet I face difficulty in reading
this is my code
I'd like to make one file representing (linking) bunch of files - something as on Linux named pipe do. The motivation is not to concatenate files (not to create the new one when I have originals and I want to keep them) so do not duplicate data. For example I want to use this to load videos from camera which are divided by approx. 2 GB.
If I have two files in my input folder, hadoop mapreduce will process both these files as . Is there a way to specify different processing for these two files? Suppose for example that instead of firing 1 for each word I encounter, I want to fire a 1 if this word was in file 1 and a 2 in the case it was seen in file 2 present in the same directory. How would you do that?
You should be able to get the file name as described in this post How to get the input file name in the mapper in a Hadoop program?
Once you have the file name you can have a condition to check for the file name based on that you should be able to fire 1 or 2.
I want to run 5 threads and each thread pulls in data from different .csv file. For example, thread 1 maps to data_1.csv... I do NOT want to create 5 Thread Groups.
Please help. Thank you!
To be able to open different csv files in the same test plan execution, you have to build a file name with the threadNum function.
According to your example you would have to set the filename to "data_${__threadNum}.csv" in the csv reader so the 5 threads will load your 5 files.
The files are shared upon their filenames so the sharing mode is not an issue.
According to usermanual By default, the file is only opened once, and each thread will use a different line from the file. You can change sharing mode but not open several different CSV files, i.e. one file for each thread.
Upd: on the other hand, if you don't have a lot of threads you can try this