Bug 3925 - Misconfigured database + Index service registration == messy logs
: Misconfigured database + Index service registration == messy logs
: 4.0.1
: Macintosh All
: P3 normal
: ---
Assigned To:
: 3926
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Reported: 2005-11-18 14:51 by
Modified: 2006-02-07 01:42 (History)



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Description From 2005-11-18 14:51:13
I have an upstream setup in my hierarchy.xml for MDS, but I have not setup RFT.
 Every 60s, I get:

2005-11-18 14:42:46,629 ERROR impl.QueryAggregatorSource
ple:149] Exception Getting Multiple Resource Properties from
on: Failed to serialize resource property
actory.TotalNumberOfBytesTransferred@17892d5; nested exception is: 
        org.apache.commons.dbcp.DbcpException: Connection refused. Check that
e hostname and port are correct and that the postmaster is accepting TCP/IP

It would be nicer to return some kind of exceptional value here, I think,
rather than throwing an 
exception.  I leave it up to architects whether that means returning -1 or nil,
or whatever.  Maybe in the 
future some kind of "canConnectToDB" RP would be useful, not sure.
------- Comment #1 From 2005-12-22 15:24:46 -------
I will make RFT send -1 when database is not configured to talk to RFT and
QueryAggregatorSource.java should be changed to treat that special
------- Comment #2 From 2006-01-03 16:28:29 -------
What is the real issuse here? Is that the service throws an exception? That the 
mds code logs this error over & over again? Or that WebMDS doesn't display 
information indicating a problem with the service? 
The bottom line to me is that the service should throw an error and the code 
that queries the service should catch the error and handle it appropriately. 
Returning -1 or nill or exposing RP such as 'canConnectToDB' or whatever is not 
right to me because 1) it does not explain the real error and 2) exposes too 
much detail about the implementation. 
Maybe RFT shouldn't register itself to MDS in the first place if it does not 
have DB (or whatever else) configured properly. Also, maybe the mds code should 
use exponential back off when queries fail so that these log messages don't 
keep showing up frequently.
------- Comment #3 From 2006-02-07 01:42:43 -------
I committed a fix for this in trunk. I made RFT not register to MDS when it is
not properly configured.