On 1.4.2014, at 21.34, Michael Kliewe <mkliewe@gmx.de> wrote:
our dovecot processes sometimes crash when we create new folders. The "imap" process and the "indexer worker" process is crashing. We can reproduce this, we have a java program with multiple threads, and sometimes 2 threads try to create the same folder for the same user, and if both collide, dovecot processes crash.
We don't see this happening in the real world if "normal" imap clients are connected, but our special java program trying to create folders in parallel is producing these crashes. .. Apr 1 19:58:28 dovecot01 dovecot: imap(user@domain.de): Panic: file mail-index-transaction-export.c: line 117 (log_append_ext_intro): assertion failed: (intro->ext_id == idx || idx == (uint32_t)-1)