maria-developers team mailing list archive

[Jan Lindström <jan.lindstrom@xxxxxxxxxxx>]

On Thu, Sep 1, 2016 at 12:31 PM, Kristian Nielsen <knielsen@xxxxxxxxxxxxxxx>
wrote:

> Michael Widenius <michael.widenius@xxxxxxxxx> writes:
>
>
>
> This is because of errorneous merge. The original code:
>
>     if (waitee_buf_ptr) {
>             lock_report_waiters_to_mysql(waitee_buf_ptr,
>                                          start_mysql_thd,
>                                          victim_trx_id);
>
> The bb-10.2-jan code:
>
>     if (victim_trx && waitee_buf_ptr) {
>             lock_report_waiters_to_mysql(waitee_buf_ptr,
>                                          start_mysql_thd,
>                                          victim_trx->id);
>
> So if victim_trx is NULL the waits are not reported to parallel replication
> at all, causing the stalls and/or hangs. victim_trx is NULL unless InnoDB
> itself detects a deadlock.
>
>
>
Kristian, thanks for pointing this to me, I was not sure what this function
was doing, so
I merged it incorrectly.

R: Jan