nvm, a bit of Guus Meeuwis and rain made me solve the issue, it seems.

On 05-05-2009 16:24:06 +0200, Fabian Groffen wrote:

Can someone tell me how to remove a BAT in MonetDB from C code for good and for REAL?

I'll probably miss something trivial, as I tried about 20 combinations of how to get rid of a previously persistent BAT, but everytime I restart my server it comes back again like a BIOS virus.

Place in the source: monetdb5/src/mal/mal_authorize.mx, I want to remove an old M5system_auth_* BAT after I created a new one with converted data in the initTables function.

My latest incarnation looks like this (copied and pasted from destroyImmediate):

    BBPlogical(b->batCacheid, buf);
    BBPreleaseref(b->batCacheid);
    BBPfix(bid);
    if (BBPindex(buf) == bid) {
        BAT *t = (BAT*)BBPgetdesc(ABS(bid));

        BATmode(t, TRANSIENT);
    }
    BBPunfix(bid);

said BAT looks gone in the session, but returns next time the server starts. Can I (sub)commit the removed BAT?

Any hint on this strong persistence would be nice.

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