Tor Didriksen cfea7c7dfc Bug#13832772 ASSERTION `THD->IS_ERROR() || KILL_ERRNO' ...

We are trying to sort a lot of text/blob fields, 
so the buffer is indeed too small.
Memory available = thd->variables.sortbuff_size = 262144
min_sort_memory = param.sort_length*MERGEBUFF2 = 292245
So the decision to abort the query is correct.

filesort() calls my_error(), the error is reported.
But, since we have DELETE IGNORE ... the error is converted to a warning by
THD::raise_condition

filesort currently expects an error to be recorded in the THD diagnostics
area.
If we lift this restriction (remove the assert) we end up in the familiar
void Protocol::end_statement()
  default:
    DBUG_ASSERT(0);

The solution seems to be to call my_error(ME_FATALERROR) in filesort,
so that the error is propagated as an error rather than a warning.

2012-03-14 12:28:41 +01:00

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