Mixing
MultiThreading in AWS lambda using Python3
I am trying to implement Multithreading in AWS lambda. This is a Sample code that defines the format of my original code which I am trying to execute in lambda.
import threading
import time
def this_will_await(arg,arg2):
print("Hello User")
print(arg,arg2)
def this_should_start_then_wait():
print("This starts")
timer = threading.Timer(3.0, this_will_await,["b","a"])
timer.start()
print("This should execute")
this_should_start_then_wait()
In my local Machine, this code is working fine. The output I am receiving is:
This starts
This should execute
.
.
.
Hello User
('b', 'a')
Those 3 . represents that it waited for 3 seconds to complete the execution.
Now when I execute the same thing in AWS lambda. I am only receiving
This starts
This should execute
I think it's not calling the this_will_await() function.
python python-3.x multithreading amazon-web-services aws-lambda
asked Nov 20 '18 at 5:49
Sharvin ShahSharvin Shah
7416
add a comment |
I am trying to implement Multithreading in AWS lambda. This is a Sample code that defines the format of my original code which I am trying to execute in lambda.
import threading
import time
def this_will_await(arg,arg2):
print("Hello User")
print(arg,arg2)
def this_should_start_then_wait():
print("This starts")
timer = threading.Timer(3.0, this_will_await,["b","a"])
timer.start()
print("This should execute")
this_should_start_then_wait()
In my local Machine, this code is working fine. The output I am receiving is:
This starts
This should execute
.
.
.
Hello User
('b', 'a')
Those 3 . represents that it waited for 3 seconds to complete the execution.
Now when I execute the same thing in AWS lambda. I am only receiving
This starts
This should execute
I think it's not calling the this_will_await() function.
python python-3.x multithreading amazon-web-services aws-lambda
asked Nov 20 '18 at 5:49
Sharvin ShahSharvin Shah
7416
add a comment |
I am trying to implement Multithreading in AWS lambda. This is a Sample code that defines the format of my original code which I am trying to execute in lambda.
import threading
import time
def this_will_await(arg,arg2):
print("Hello User")
print(arg,arg2)
def this_should_start_then_wait():
print("This starts")
timer = threading.Timer(3.0, this_will_await,["b","a"])
timer.start()
print("This should execute")
this_should_start_then_wait()
In my local Machine, this code is working fine. The output I am receiving is:
This starts
This should execute
.
.
.
Hello User
('b', 'a')
Those 3 . represents that it waited for 3 seconds to complete the execution.
Now when I execute the same thing in AWS lambda. I am only receiving
This starts
This should execute
I think it's not calling the this_will_await() function.
python python-3.x multithreading amazon-web-services aws-lambda
asked Nov 20 '18 at 5:49
Sharvin ShahSharvin Shah
7416
I am trying to implement Multithreading in AWS lambda. This is a Sample code that defines the format of my original code which I am trying to execute in lambda.
import threading
import time
def this_will_await(arg,arg2):
print("Hello User")
print(arg,arg2)
def this_should_start_then_wait():
print("This starts")
timer = threading.Timer(3.0, this_will_await,["b","a"])
timer.start()
print("This should execute")
this_should_start_then_wait()
In my local Machine, this code is working fine. The output I am receiving is:
This starts
This should execute
.
.
.
Hello User
('b', 'a')
Those 3 . represents that it waited for 3 seconds to complete the execution.
Now when I execute the same thing in AWS lambda. I am only receiving
This starts
This should execute
I think it's not calling the this_will_await() function.
python python-3.x multithreading amazon-web-services aws-lambda
python python-3.x multithreading amazon-web-services aws-lambda
asked Nov 20 '18 at 5:49
Sharvin ShahSharvin Shah
7416
asked Nov 20 '18 at 5:49
Sharvin ShahSharvin Shah
7416
asked Nov 20 '18 at 5:49
Sharvin ShahSharvin Shah
7416
asked Nov 20 '18 at 5:49
Sharvin ShahSharvin Shah
7416
asked Nov 20 '18 at 5:49
Sharvin ShahSharvin Shah
7416
7416
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
Have you tried adding timer.join()? You'll need to join the Timer thread because otherwise the Lambda environment will kill off the thread when the parent thread finishes.
This code in a Lambda function:
import threading
import time
def this_will_await(arg,arg2):
print("Hello User")
print(arg,arg2)
def this_should_start_then_wait():
print("This starts")
timer = threading.Timer(3.0, this_will_await,["b","a"])
timer.start()
timer.join()
print("This should execute")
this_should_start_then_wait()
def lambda_handler(event, context):
return this_should_start_then_wait()
Produces this output:
This starts
Hello User
b a
This should execute
answered Nov 20 '18 at 6:12
Gabe HollombeGabe Hollombe
5,66333140
add a comment |
I am not exactly sure if you can put delays while threading in lambda. I am also facing the same issue and found out this article:[https://aws.amazon.com/blogs/compute/parallel-processing-in-python-with-aws-lambda/1
answered Nov 20 '18 at 6:21
Jeet BhattachariyaJeet Bhattachariya
11
Yes, I am also trying to add delays using the scheduler.
– Sharvin Shah
Nov 20 '18 at 6:22
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Have you tried adding timer.join()? You'll need to join the Timer thread because otherwise the Lambda environment will kill off the thread when the parent thread finishes.
This code in a Lambda function:
import threading
import time
def this_will_await(arg,arg2):
print("Hello User")
print(arg,arg2)
def this_should_start_then_wait():
print("This starts")
timer = threading.Timer(3.0, this_will_await,["b","a"])
timer.start()
timer.join()
print("This should execute")
this_should_start_then_wait()
def lambda_handler(event, context):
return this_should_start_then_wait()
Produces this output:
This starts
Hello User
b a
This should execute
answered Nov 20 '18 at 6:12
Gabe HollombeGabe Hollombe
5,66333140
add a comment |
Have you tried adding timer.join()? You'll need to join the Timer thread because otherwise the Lambda environment will kill off the thread when the parent thread finishes.
This code in a Lambda function:
import threading
import time
def this_will_await(arg,arg2):
print("Hello User")
print(arg,arg2)
def this_should_start_then_wait():
print("This starts")
timer = threading.Timer(3.0, this_will_await,["b","a"])
timer.start()
timer.join()
print("This should execute")
this_should_start_then_wait()
def lambda_handler(event, context):
return this_should_start_then_wait()
Produces this output:
This starts
Hello User
b a
This should execute
answered Nov 20 '18 at 6:12
Gabe HollombeGabe Hollombe
5,66333140
add a comment |
Have you tried adding timer.join()? You'll need to join the Timer thread because otherwise the Lambda environment will kill off the thread when the parent thread finishes.
This code in a Lambda function:
import threading
import time
def this_will_await(arg,arg2):
print("Hello User")
print(arg,arg2)
def this_should_start_then_wait():
print("This starts")
timer = threading.Timer(3.0, this_will_await,["b","a"])
timer.start()
timer.join()
print("This should execute")
this_should_start_then_wait()
def lambda_handler(event, context):
return this_should_start_then_wait()
Produces this output:
This starts
Hello User
b a
This should execute
answered Nov 20 '18 at 6:12
Gabe HollombeGabe Hollombe
5,66333140
Have you tried adding timer.join()? You'll need to join the Timer thread because otherwise the Lambda environment will kill off the thread when the parent thread finishes.
This code in a Lambda function:
import threading
import time
def this_will_await(arg,arg2):
print("Hello User")
print(arg,arg2)
def this_should_start_then_wait():
print("This starts")
timer = threading.Timer(3.0, this_will_await,["b","a"])
timer.start()
timer.join()
print("This should execute")
this_should_start_then_wait()
def lambda_handler(event, context):
return this_should_start_then_wait()
Produces this output:
This starts
Hello User
b a
This should execute
answered Nov 20 '18 at 6:12
Gabe HollombeGabe Hollombe
5,66333140
answered Nov 20 '18 at 6:12
Gabe HollombeGabe Hollombe
5,66333140
answered Nov 20 '18 at 6:12
Gabe HollombeGabe Hollombe
5,66333140
answered Nov 20 '18 at 6:12
Gabe HollombeGabe Hollombe
5,66333140
5,66333140
add a comment |
add a comment |
I am not exactly sure if you can put delays while threading in lambda. I am also facing the same issue and found out this article:[https://aws.amazon.com/blogs/compute/parallel-processing-in-python-with-aws-lambda/1
answered Nov 20 '18 at 6:21
Jeet BhattachariyaJeet Bhattachariya
11
Yes, I am also trying to add delays using the scheduler.
– Sharvin Shah
Nov 20 '18 at 6:22
add a comment |
I am not exactly sure if you can put delays while threading in lambda. I am also facing the same issue and found out this article:[https://aws.amazon.com/blogs/compute/parallel-processing-in-python-with-aws-lambda/1
answered Nov 20 '18 at 6:21
Jeet BhattachariyaJeet Bhattachariya
11
Yes, I am also trying to add delays using the scheduler.
– Sharvin Shah
Nov 20 '18 at 6:22
add a comment |
I am not exactly sure if you can put delays while threading in lambda. I am also facing the same issue and found out this article:[https://aws.amazon.com/blogs/compute/parallel-processing-in-python-with-aws-lambda/1
answered Nov 20 '18 at 6:21
Jeet BhattachariyaJeet Bhattachariya
11
I am not exactly sure if you can put delays while threading in lambda. I am also facing the same issue and found out this article:[https://aws.amazon.com/blogs/compute/parallel-processing-in-python-with-aws-lambda/1
answered Nov 20 '18 at 6:21
Jeet BhattachariyaJeet Bhattachariya
11
answered Nov 20 '18 at 6:21
Jeet BhattachariyaJeet Bhattachariya
11
answered Nov 20 '18 at 6:21
Jeet BhattachariyaJeet Bhattachariya
11
answered Nov 20 '18 at 6:21
Jeet BhattachariyaJeet Bhattachariya
11
11
Yes, I am also trying to add delays using the scheduler.
– Sharvin Shah
Nov 20 '18 at 6:22
add a comment |
Yes, I am also trying to add delays using the scheduler.
– Sharvin Shah
Nov 20 '18 at 6:22
Yes, I am also trying to add delays using the scheduler.
– Sharvin Shah
Nov 20 '18 at 6:22
Yes, I am also trying to add delays using the scheduler.
– Sharvin Shah
Nov 20 '18 at 6:22
add a comment |
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