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MDEV-18608: Defaults for 10.4: histogram size should be set

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Change the defaults:

-histogram_size=0
+histogram_size=254

-histogram_type=SINGLE_PREC_HB
+histogram_type=DOUBLE_PREC_HB

Adjust the testcases:
- Some have ignorable changes in EXPLAIN outputs and
  more counter increments due to EITS table reads.
- Testcases that meaningfully depend on the old defaults
  are changed to use the old values.
This commit is contained in:
Sergei Petrunia
2019-02-17 22:46:10 +03:00
parent 19c6a7bbd7
commit 15a77a1a2c
25 changed files with 136 additions and 115 deletions
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3
mysql-test/main/stat_tables.test
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@ -6,6 +6,8 @@ select @@session.use_stat_tables;
set @save_use_stat_tables=@@use_stat_tables;
set use_stat_tables='preferably';
set @tmp_stt_hs=@@histogram_size, @tmp_stt_ht=@@histogram_type;
set histogram_size=0, histogram_type='single_prec_hb';
--disable_warnings
DROP DATABASE IF EXISTS dbt3_s001;
@ -443,4 +445,5 @@ select * from mysql.column_stats;
analyze
select * from t1 where a=1 and b=3;
drop table t1;
set histogram_size=@tmp_stt_hs, histogram_type=@tmp_stt_ht;
set use_stat_tables=@save_use_stat_tables;