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| author | Aleksey Midenkov <midenok@gmail.com> | 2019-12-02 11:48:37 +0300 |
|---|---|---|
| committer | Aleksey Midenkov <midenok@gmail.com> | 2019-12-02 11:48:37 +0300 |
| commit | 498a96a4789e58549ce87b5843e804e055ab327f (patch) | |
| tree | 36da2d9f9c8180fbad55e0413c70f8c0702b68f0 /sql/table.cc | |
| parent | 57cab7cd5114d3ef47203118cddd3ad0a22f2861 (diff) | |
| download | mariadb-git-498a96a4789e58549ce87b5843e804e055ab327f.tar.gz | |
MDEV-20441 ER_CRASHED_ON_USAGE upon update on versioned Aria table
Turn read cache off for update and multi-update for versioned
table. no_cache is reinited on each TABLE open because it is
applicable for specific algorithms.
As a side fix vers_insert_history_row() honors vers_write setting.
Aria with row_format=fixed uses IO_CACHE of type READ_CACHE for
sequential read in update loop. When history row is inserted inside
this loop the cache misses it and fails with error.
TODO:
Currently maria_extra() does not support SEQ_READ_APPEND. Probably it
might be possible to use this type of cache.
Diffstat (limited to 'sql/table.cc')
| -rw-r--r-- | sql/table.cc | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sql/table.cc b/sql/table.cc index e008e6a3ded..291418f55fe 100644 --- a/sql/table.cc +++ b/sql/table.cc @@ -4688,6 +4688,7 @@ void TABLE::init(THD *thd, TABLE_LIST *tl) cond_selectivity_sampling_explain= NULL; vers_write= s->versioned; quick_condition_rows=0; + no_cache= false; initialize_quick_structures(); #ifdef HAVE_REPLICATION /* used in RBR Triggers */ |