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Subject Issue 914 in asterixdb: Temporary Dataset gets deleted after few minutes of creation
Date Fri, 31 Jul 2015 17:18:54 GMT
Status: New
Owner: ----
Labels: Type-Defect Priority-Medium

New issue 914 by Temporary Dataset gets deleted after  
few minutes of creation

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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