Re: monetdb status health

On 2/11/13 4:54 AM, Brandon Jackson wrote:

So it is a statistic that does not necessarily mean there is data corruption? Yes, but if your statistics grow with each server restart, you should consider a severely corrupted database. This could be caused by hardware failures, OOM OS exception handling, software bugs,...

Sent from my iPhone

On Feb 10, 2013, at 12:03 PM, Fabian Groffen wrote:

...

...

My questions are simple:

what causes crashes? The mserver5 (monetdb database) terminates in such a way that it can not be considered a clean shutdown, this is usually the case when the

On 10-02-2013 09:44:09 -0800, Tapomay Dey wrote: program gets terminated due to a condition that makes further execution impossible, e.g. memory faults. These are almost always program errors.

...

what is health? Health is the percentage of start-stop sequences compared to the number of times the database was actually started. E.g. how many times a start was followed by a clean shutdown (hence no crash).

...

how do we stop health from degrading? You can't, a database that crashes, and keeps on doing so will cause the health of the database to degrade.

...

Following is the status of my db- start count: 140 stop count: 1 crash count: 138 So, essentially, every time you start your database, it never reaches a point where you stop it cleanly, but instead your database crashes all the time.

-- Fabian Groffen fabian@monetdb.org column-store pioneer http://www.monetdb.org/Home _______________________________________________ users-list mailing list users-list@monetdb.org http://mail.monetdb.org/mailman/listinfo/users-list

---

users-list mailing list users-list@monetdb.org http://mail.monetdb.org/mailman/listinfo/users-list