Tools let --set-vars clobber the required SQL mode

Bug #1078887 reported by Raghavendra D Prabhu on 2012-11-14
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Percona Toolkit moved to
Fix Released
Brian Fraser

Bug Description

Currently providing SQL_MODE with --set-vars clobbers the one set by the script which is "NO_AUTO_VALUE_ON_ZERO". This needs to be fixed.

This was discussed under --

and seems to fix that.

Related branches

Brian Fraser (fraserbn) wrote :

That's odd, I could've sworn I had made a bug after we talked on IRC, but I can't find it now. Thanks for the follow-up!

tags: added: all-tools sql-mode
Changed in percona-toolkit:
status: New → Triaged
Changed in percona-toolkit:
milestone: none → 2.1.8
importance: Undecided → Medium
Brian Fraser (fraserbn) on 2012-12-03
Changed in percona-toolkit:
assignee: nobody → Brian Fraser (fraserbn)
status: Triaged → In Progress
Brian Fraser (fraserbn) on 2012-12-11
Changed in percona-toolkit:
status: In Progress → Fix Committed
Daniel Nichter (daniel-nichter) wrote :

This bug and conflict. From the customer issue referenced in the latter:

"The desired behavior is that the second query would be inserted and the 0 treated as 'NULL' or the next number via autoincrement."

That was solely because the customer was using pt-log-player and replaying INSERT statements. pt-log-player is gone in 2.2, so this isn't an issue in the future, but for 2.1.8 we need to keep the change/fix for this bug because I think it's a better overall approach, but then we need to document in pt-log-player 2.1.8 that if you need auto vals on zero you'll have to use pt-log-player 2.1.7. So yes this means we're breaking backwards compat for pt-log-player in 2.1.8 but it's either that or not doing this bug which would affect more important tools.

Changed in percona-toolkit:
status: Fix Committed → In Progress
Daniel Nichter (daniel-nichter) wrote :

Documented that new limitation directly in 2.1 branch r514.

Changed in percona-toolkit:
status: In Progress → Fix Committed
summary: - Don't clobber the sql_mode set by the script with set-vars
+ Tools let --set-vars clobber the required SQL mode
Changed in percona-toolkit:
status: Fix Committed → Fix Released

Percona now uses JIRA for bug reports so this bug report is migrated to:

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