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From Mike Carey <dtab...@gmail.com>
Subject Re: Issue 914 in asterixdb: Temporary Dataset gets deleted after few minutes of creation
Date Fri, 31 Jul 2015 21:45:11 GMT
Either that, or we can just change the resulting error message to be 
"what part of 'temporary' didn't you understand?"

:-)


On 7/31/15 10:18 AM, asterixdb@googlecode.com wrote:
> Status: New
> Owner: ----
> Labels: Type-Defect Priority-Medium
>
> New issue 914 by Pritom...@gmail.com: Temporary Dataset gets deleted 
> after few minutes of creation
> https://code.google.com/p/asterixdb/issues/detail?id=914
>
> What steps will reproduce the problem?
> 1. create a temporary dataset in any data universe.
> 2. After 2-3 minutes it will be deleted unless you do anything with it.
>
> What is the expected output? What do you see instead?
> It should persist for 30 days without being accessed.
>
> What version of the product are you using? On what operating system?
> asterix-server-0.8.7. Ubuntu
>
> Please provide any additional information below.
> I figured out the reason for the problem and possible ways to solve 
> it. In the class, edu.uci.ics.asterix.metadata.MetadataCache in 
> asterix, there is a private final static long 
> TEMP_DATASET_INACTIVE_TIME_THRESHOLD variable on line 35. Here by 
> default, the thresholdis set to 30 days in miliseconds. But it 
> overflows, I mean the long variable. So the temporary dataset gets 
> garbage collected way before 30 days. Fixing this should fix the problem.
>


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