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parallel-repair available in mysqld

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unknown 2003-05-04 18:43:37 +02:00
commit f3a1967bc9
5 changed files with 42 additions and 9 deletions
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12
myisam/mi_check.c
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@ -2246,7 +2246,17 @@ int mi_repair_parallel(MI_CHECK *param, register MI_INFO *info,
else
rec_length=share->base.pack_reclength;
sort_info.max_records=
((param->testflag & T_CREATE_MISSING_KEYS) ? info->state->records :
/* +1 below is required hack for parallel repair mode.
The info->state->records value, that is compared later
to sort_info.max_records and cannot exceed it, is
increased in sort_key_write. In mi_repair_by_sort, sort_key_write
is called after sort_key_read, where the comparison is performed,
but in parallel mode master thread can call sort_key_write
before some other repair thread calls sort_key_read.
Furthermore I'm not even sure +1 would be enough.
May be sort_info.max_records shold be always set to max value in
parallel mode. */
((param->testflag & T_CREATE_MISSING_KEYS) ? info->state->records + 1:
(ha_rows) (sort_info.filelength/rec_length+1));
del=info->state->del;