2017-10-20 16:34 GMT+03:00 :
> Hi Leonid,
>
>> 1) With MDB_WRITEMAP the mdb_mid2l_append() will be used.
>> Internally mdb_mid2l_append() don't check for duplicated, but just
>> append a given page number to the list.
>> Therefore when database opens with MDB_WRITEMAP this bug leads to
>> duplicat
Hi, Timur.
There two different cases: with MDB_WRITEMAP, and without it.
1) With MDB_WRITEMAP the mdb_mid2l_append() will be used.
Internally mdb_mid2l_append() don't check for duplicated, but just
append a given page number to the list.
Therefore when database opens with MDB_WRITEMAP this bug le
Hi Leonid,
> 1) With MDB_WRITEMAP the mdb_mid2l_append() will be used.
> Internally mdb_mid2l_append() don't check for duplicated, but just
> append a given page number to the list.
> Therefore when database opens with MDB_WRITEMAP this bug leads to
> duplicates inside the dirty-list and then (se
On Thu, 2017-10-19 at 08:12 +0200, Hallvard Breien Furuseth wrote:
> On 18/10/17 22:44, timur.kris...@gmail.com wrote:
> > On Wed, 2017-10-18 at 20:08 +0300, Леонид Юрьев wrote:
> > > Sure this will not create problems when working without
> > > MDB_WRITEMAP.
> > > But in MDB_WRITEMAP mode duplicat
On 18/10/17 22:44, timur.kris...@gmail.com wrote:
On Wed, 2017-10-18 at 20:08 +0300, Леонид Юрьев wrote:
Sure this will not create problems when working without MDB_WRITEMAP.
But in MDB_WRITEMAP mode duplicates in the dirty-list seems may leads
some side affects.
Therefore in MDBX I had planned
2017-10-18 19:40 GMT+03:00 :
> Maybe mdb_page_dirty could be allowed to simply accept -1 as a return
> value from insert() and that could fix it? Since the page is already
> listed in the txn's dirty list, it shouldn't really matter. Or am I
> misunderstanding the consequences of this?
Sure this
On Wed, 2017-10-18 at 20:08 +0300, Леонид Юрьев wrote:
> 2017-10-18 19:40 GMT+03:00 :
> > Maybe mdb_page_dirty could be allowed to simply accept -1 as a
> > return
> > value from insert() and that could fix it? Since the page is
> > already
> > listed in the txn's dirty list, it shouldn't really m
On Wed, 2017-10-18 at 06:18 +0200, Hallvard Breien Furuseth wrote:
> On 16/10/17 14:56, Hallvard Breien Furuseth wrote:
> > On 16. okt. 2017 13:43, Леонид Юрьев wrote:
> > > (...)
> > > Inside freelist_save() the mt_loose_pages could be merged into
> > > the
> > > mt_free_pgs.
> > > http://www.ope
On 16/10/17 14:56, Hallvard Breien Furuseth wrote:
On 16. okt. 2017 13:43, Леонид Юрьев wrote:
(...)
Inside freelist_save() the mt_loose_pages could be merged into the
mt_free_pgs.
http://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=blob;f=libraries/liblmdb/mdb.c;h=1bf81ed4c87901991b7cac8
On Mon, 2017-10-16 at 13:58 +0200, Hallvard Breien Furuseth wrote:
> On 16. okt. 2017 12:51, Howard Chu wrote:
> > timur.kris...@gmail.com wrote:
> > > I have an app that uses LMDB, and I've experienced an interesting
> > > issue: when trying to delete a certain item with mdb_cursor_del,
> > > it
>
On Mon, 2017-10-16 at 11:51 +0100, Howard Chu wrote:
> >
> > It appears that it couldn't mark a page as dirty.
> > Here is the relevant assertion from mdb_page_dirty:
> > rc = insert(txn->mt_u.dirty_list, &mid);
> > mdb_tassert(txn, rc == 0); // assertion failed
> >
> > What might I be doing wron
On 16. okt. 2017 13:43, Леонид Юрьев wrote:
This is a bug (seems minor), I fixed it in the MDBX few days ago.
https://github.com/leo-yuriev/libmdbx/commit/9fd7056b4f02098914d813f38ba1ed2103c6b855#diff-185afae163fe87013315d2545a8b6055R3095
That's rather different from mdb.c. mdb's page_touch()
Hi, Howard.
This is a bug (seems minor), I fixed it in the MDBX few days ago.
https://github.com/leo-yuriev/libmdbx/commit/9fd7056b4f02098914d813f38ba1ed2103c6b855#diff-185afae163fe87013315d2545a8b6055R3095
Inside freelist_save() the mt_loose_pages could be merged into the mt_free_pgs.
http://www
On 16. okt. 2017 12:51, Howard Chu wrote:
timur.kris...@gmail.com wrote:
I have an app that uses LMDB, and I've experienced an interesting
issue: when trying to delete a certain item with mdb_cursor_del, it
crashed with the following backtrace: https://pastebin.com/7p9wtkj9
Weird backtrace. I
timur.kris...@gmail.com wrote:
Hi,
I have an app that uses LMDB, and I've experienced an interesting
issue: when trying to delete a certain item with mdb_cursor_del, it
crashed with the following backtrace: https://pastebin.com/7p9wtkj9
It appears that it couldn't mark a page as dirty.
Here is
Hi,
I have an app that uses LMDB, and I've experienced an interesting
issue: when trying to delete a certain item with mdb_cursor_del, it
crashed with the following backtrace: https://pastebin.com/7p9wtkj9
It appears that it couldn't mark a page as dirty.
Here is the relevant assertion from mdb_p
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