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https://issues.apache.org/jira/browse/PIG-4913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15764377#comment-15764377
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Adam Szita commented on PIG-4913:
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I propose (see: [^PIG-4913.patch]) we cache the script content and use it
whenever required instead of reading it each time with
*ScriptEngine#getScriptAsStream*.
As I can see there was already a similar idea not fully implemented with the
use of *JythonScriptEngine$Interpreter#filesLoaded* so I basically extended
this notion.
Let me know what you think [~rohini], if you agree with the approach we could
look at the above mentioned issue here next.
> Reduce jython function initiation during compilation
> ----------------------------------------------------
>
> Key: PIG-4913
> URL: https://issues.apache.org/jira/browse/PIG-4913
> Project: Pig
> Issue Type: Improvement
> Reporter: Rohini Palaniswamy
> Assignee: Adam Szita
> Attachments: PIG-4913.patch
>
>
> While investigating PIG-4908, saw that ScriptEngine.getScriptAsStream was
> invoked way too many times during compilation phase for a simple script.
> {code:title=sleep.py}
> #!/usr/bin/python
> import time;
> @outputSchema("sltime:int")
> def sleep(num):
> if num == 1:
> print "Sleeping for %d minutes" % num;
> time.sleep(num * 60);
> return num;
> {code}
> {code:title=sleep.pig}
> register 'sleep.py' using jython;
> A = LOAD '/tmp/sleepdata' as (f1:int);
> B = FOREACH A generate $0, sleep($0);
> STORE B into '/tmp/tezout';
> {code}
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