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This bug was introduced by the patch for WL#3220. If the memory allocated for the tree to store unique elements to be counted is not big enough to include all of them then an external file is used to store the elements. The unique elements are guaranteed not to be nulls. So, when reading them from the file we don't have to care about the null flags of the read values. However, we should remove the flag at the very beginning of the process. If we don't do it and if the last value written into the record buffer for the field whose distinct values needs to be counted happens to be null, then all values read from the file are considered to be nulls and are not counted in. The fix does not remove a possible null flag for the read values. Rather it just counts the values in the same way it was done before WL #3220.
18 lines
1 KiB
Modula-2
18 lines
1 KiB
Modula-2
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tablespace : disabled in MariaDB (no TABLESPACE table attribute)
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events_time_zone : Test is not predictable as it depends on precise timing.
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lowercase_table3 : Bug#11762269 2010-06-30 alik main.lowercase_table3 on Mac OSX
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read_many_rows_innodb : Bug#11748886 2010-11-15 mattiasj report already exists
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archive-big : Bug#11817185 2011-03-10 Anitha Disabled since this leads to timeout on Solaris Sparc
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log_tables-big : Bug#11756699 2010-11-15 mattiasj report already exists
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mysql_embedded : Bug#12561297 2011-05-14 Anitha Dependent on PB2 changes - eventum#41836
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