akhanss / datapath

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Error when loading data #9

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago
What steps will reproduce the problem?
1. Create a relation
2. Load a few rows into the relation
3.

What is the expected output? What do you see instead?

I am getting an error when trying to load a very small data set (3 rows) for 
testing purposes:
startPg = 0, sz = 4096, n = 26, rel = 1, diskArrayID = 1, lastPage = 8192
startPg = 4096, sz = 4096, n = 4172, rel = 2, diskArrayID = 1, lastPage = 8192
FATAL [DiskIO/source/HDThreadImp.cc:85] You should not shut down the disk array

What version of the product are you using? On what operating system?
Revision 84, Fedora

Please provide any additional information below.

Original issue reported on code.google.com by joostimp...@gmail.com on 1 Sep 2012 at 4:21

GoogleCodeExporter commented 8 years ago
Apologies for the late response to this ticket. This is a known issue with the 
system, where it will not properly shut itself down when a query ends. Once all 
of the data is written, the disk array is shut down. However, the disk array 
isn't expecting to be shut down (as the system was designed to stay alive and 
process queries as they come) and causes an error.

This is something we are planning on fixing, but we just haven't been able to 
get to it yet.

Whenever you are loading data, as long as you see the rows that look like these:
startPg = 0, sz = 4096, n = 26, rel = 1, diskArrayID = 1, lastPage = 8192
startPg = 4096, sz = 4096, n = 4172, rel = 2, diskArrayID = 1, lastPage = 8192

you should be fine. This is letting you know the data has been written to the 
disk.

In general, if you get a complaint from the disk array, it's probably just the 
system shutting down.

Original comment by Luminaire1202 on 14 Sep 2012 at 4:09