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MDEV-18790 Server crash in fields_in_hash_keyinfo after unsuccessful...

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attempt to drop BLOB with long index

Restore long table->key_info, So that in the case of unsuccessful table
alter table->key_info should have a correct value. In the case of successful
table alter old table is flushed so that is why we don't see this error in
the case of successful alter.
This commit is contained in:
sachin
2019-03-03 16:35:13 +05:30
committed by sachinsetia1001@gmail.com
parent 3568427d11
commit f9f625fb43
3 changed files with 18 additions and 0 deletions
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2
sql/sql_table.cc
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@ -8476,6 +8476,8 @@ mysql_prepare_alter_table(THD *thd, TABLE *table,
&key_parts, key_info->option_list, DDL_options());
new_key_list.push_back(key, thd->mem_root);
}
if (key_info->algorithm == HA_KEY_ALG_LONG_HASH)
re_setup_keyinfo_hash(key_info);
}
{
Key *key;