The --changes-block-size handling was intended to help when
a user has a limited "maxscanrows" (see "p4 group"). It used
"p4 changes -m $maxchanges" to limit the number of results.
Unfortunately, it turns out that the "maxscanrows" and "maxresults"
limits are actually applied *before* the "-m maxchanges" parameter
is considered (experimentally).
Fix the block-size handling so that it gets blocks of changes
limited by revision number ($Start..$Start+$N, etc). This limits
the number of results early enough that both sets of tests pass.
Note that many other Perforce operations can fail for the same
reason (p4 print, p4 files, etc) and it's probably not possible
to workaround this. In the real world, this is probably not
usually a problem.
Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change the --changes-block-size git-p4 test to use an account with
limited "maxresults" and "maxscanrows" values.
These conditions are applied in the server *before* the "-m maxchanges"
parameter to "p4 changes" is applied, and so the strategy that git-p4
uses for limiting the number of changes does not work. As a result,
the tests all fail.
Note that "maxscanrows" is set quite high, as it appears to not only
limit results from "p4 changes", but *also* limits results from
"p4 print". Files that have more than "maxscanrows" changes seem
(experimentally) to be impossible to print. There's no good way to
work around this.
Signed-off-by: Luke Diamand <luke@diamand.org>
Acked-by: Lex Spoon <lex@lexspoon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add additional tests of some corner-cases of the
--changes-block-size git-p4 parameter.
Also reduce the number of p4 changes created during the
tests, so that they complete faster.
Signed-off-by: Luke Diamand <luke@diamand.org>
Acked-by: Lex Spoon <lex@lexspoon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Simply running "p4 changes" on a large branch can result in a "too
many rows scanned" error from the Perforce server. It is better to
use a sequence of smaller calls to "p4 changes", using the "-m"
option to limit the size of each call.
Signed-off-by: Lex Spoon <lex@lexspoon.org>
Acked-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
