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Commit 10a2b37a authored by Rich Prohaska's avatar Rich Prohaska Committed by Yoni Fogel
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refs #5258 fix ha_tokudb_alter_56 per code review 

git-svn-id: file:///svn/mysql/tokudb-engine/tokudb-engine@45793 c7de825b-a66e-492c-adef-691d508d4ae1
parent d77c4d9f
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Showing with 46 additions and 39 deletions
storage/tokudb/ha_tokudb_alter_56.cc
View file @ 10a2b37a
......@@ -695,10 +695,27 @@ public:
bool incremented_num_DBs, modified_DBs;
};
// workaround for fill_alter_inplace_info bug (#5193)
// the function erroneously sets the ADD_INDEX and DROP_INDEX flags for a column addition that does not
// change the keys. the following code turns the ADD_INDEX and DROP_INDEX flags so that we can do hot
// column addition later.
static ulong
fix_handler_flags(Alter_inplace_info *ha_alter_info, TABLE *table, TABLE *altered_table) {
ulong handler_flags = ha_alter_info->handler_flags;
if ((handler_flags & (Alter_inplace_info::ADD_COLUMN + Alter_inplace_info::DROP_COLUMN)) != 0) {
if ((handler_flags & (Alter_inplace_info::ADD_INDEX + Alter_inplace_info::DROP_INDEX)) != 0) {
if (tables_have_same_keys(table, altered_table, false, false)) {
handler_flags &= ~(Alter_inplace_info::ADD_INDEX + Alter_inplace_info::DROP_INDEX);
}
}
}
return handler_flags;
}
// true if some bit in mask is set and no bit in ~mask is set
// otherwise false
static bool
only_flags(uint bits, uint mask) {
only_flags(ulong bits, ulong mask) {
return (bits & mask) != 0 && (bits & ~mask) == 0;
}
......@@ -714,20 +731,10 @@ ha_tokudb::check_if_supported_inplace_alter(TABLE *altered_table, Alter_inplace_
enum_alter_inplace_result result = HA_ALTER_INPLACE_NOT_SUPPORTED; // default is NOT inplace
HA_CREATE_INFO *create_info = ha_alter_info->create_info;
// workaround for fill_alter_inplace_info bug (#5193)
// the function erroneously sets the ADD_INDEX and DROP_INDEX flags for a column addition that does not
// change the keys. the following code turns the ADD_INDEX and DROP_INDEX flags so that we can do hot
// column addition later.
if ((ha_alter_info->handler_flags & (Alter_inplace_info::ADD_COLUMN + Alter_inplace_info::DROP_COLUMN)) != 0) {
if ((ha_alter_info->handler_flags & (Alter_inplace_info::ADD_INDEX + Alter_inplace_info::DROP_INDEX)) != 0) {
if (tables_have_same_keys(table, altered_table, false, false)) {
ha_alter_info->handler_flags &= ~(Alter_inplace_info::ADD_INDEX + Alter_inplace_info::DROP_INDEX);
}
}
}
ulong handler_flags = fix_handler_flags(ha_alter_info, table, altered_table);
// column rename
if (only_flags(ha_alter_info->handler_flags, Alter_inplace_info::ALTER_COLUMN_NAME + Alter_inplace_info::ALTER_COLUMN_DEFAULT)) {
if (only_flags(handler_flags, Alter_inplace_info::ALTER_COLUMN_NAME + Alter_inplace_info::ALTER_COLUMN_DEFAULT)) {
// we have identified a possible column rename,
// but let's do some more checks
......@@ -742,17 +749,17 @@ ha_tokudb::check_if_supported_inplace_alter(TABLE *altered_table, Alter_inplace_
result = HA_ALTER_INPLACE_NO_LOCK;
} else
// alter auto_increment (and nothing else)
if (only_flags(ha_alter_info->handler_flags, Alter_inplace_info::CHANGE_CREATE_OPTION) &&
if (only_flags(handler_flags, Alter_inplace_info::CHANGE_CREATE_OPTION) &&
create_info->used_fields == HA_CREATE_USED_AUTO) {
result = HA_ALTER_INPLACE_EXCLUSIVE_LOCK;
} else
// alter row_format (and nothing else)
if (only_flags(ha_alter_info->handler_flags, Alter_inplace_info::CHANGE_CREATE_OPTION) &&
if (only_flags(handler_flags, Alter_inplace_info::CHANGE_CREATE_OPTION) &&
create_info->used_fields == HA_CREATE_USED_ROW_FORMAT) {
result = HA_ALTER_INPLACE_EXCLUSIVE_LOCK;
} else
// add index (and nothing else)
if (only_flags(ha_alter_info->handler_flags, Alter_inplace_info::ADD_INDEX + Alter_inplace_info::ADD_UNIQUE_INDEX)) {
if (only_flags(handler_flags, Alter_inplace_info::ADD_INDEX + Alter_inplace_info::ADD_UNIQUE_INDEX)) {
assert(ha_alter_info->index_drop_count == 0);
result = HA_ALTER_INPLACE_SHARED_LOCK;
// someday, allow multiple hot indexes via alter table add key. don't forget to change the store_lock function.
......@@ -761,12 +768,12 @@ ha_tokudb::check_if_supported_inplace_alter(TABLE *altered_table, Alter_inplace_
result = HA_ALTER_INPLACE_NO_LOCK;
} else
// drop index (and nothing else)
if (only_flags(ha_alter_info->handler_flags, Alter_inplace_info::DROP_INDEX + Alter_inplace_info::DROP_UNIQUE_INDEX)) {
if (only_flags(handler_flags, Alter_inplace_info::DROP_INDEX + Alter_inplace_info::DROP_UNIQUE_INDEX)) {
assert(ha_alter_info->index_add_count == 0);
result = HA_ALTER_INPLACE_EXCLUSIVE_LOCK;;
} else
// add column (and nothing else)
if (only_flags(ha_alter_info->handler_flags, Alter_inplace_info::ADD_COLUMN + Alter_inplace_info::ALTER_COLUMN_ORDER)) {
if (only_flags(handler_flags, Alter_inplace_info::ADD_COLUMN + Alter_inplace_info::ALTER_COLUMN_ORDER)) {
u_int32_t added_columns[altered_table->s->fields];
u_int32_t num_added_columns = 0;
int r = find_changed_columns(added_columns, &num_added_columns, table, altered_table);
......@@ -782,7 +789,7 @@ ha_tokudb::check_if_supported_inplace_alter(TABLE *altered_table, Alter_inplace_
}
} else
// drop column (and nothing else)
if (only_flags(ha_alter_info->handler_flags, Alter_inplace_info::DROP_COLUMN + Alter_inplace_info::ALTER_COLUMN_ORDER)) {
if (only_flags(handler_flags, Alter_inplace_info::DROP_COLUMN + Alter_inplace_info::ALTER_COLUMN_ORDER)) {
u_int32_t dropped_columns[table->s->fields];
u_int32_t num_dropped_columns = 0;
int r = find_changed_columns(dropped_columns, &num_dropped_columns, altered_table, table);
......@@ -806,14 +813,11 @@ ha_tokudb::check_if_supported_inplace_alter(TABLE *altered_table, Alter_inplace_
DBUG_RETURN(result);
}
// prepare not yet called by the mysql 5.5 patch
bool
ha_tokudb::prepare_inplace_alter_table(TABLE *altered_table, Alter_inplace_info *ha_alter_info) {
TOKUDB_DBUG_ENTER("prepare_inplace_alter_table");
#if MYSQL_VERSION_ID < 50600
assert(0); // not supported
#endif
bool result = false; // success
DBUG_RETURN(result);
}
......@@ -824,25 +828,26 @@ ha_tokudb::inplace_alter_table(TABLE *altered_table, Alter_inplace_info *ha_alte
int error = 0;
HA_CREATE_INFO *create_info = ha_alter_info->create_info;
ulong handler_flags = fix_handler_flags(ha_alter_info, table, altered_table);
if (ha_alter_info->handler_flags & (Alter_inplace_info::ADD_INDEX + Alter_inplace_info::ADD_UNIQUE_INDEX)) {
if (error == 0 && (handler_flags & (Alter_inplace_info::ADD_INDEX + Alter_inplace_info::ADD_UNIQUE_INDEX))) {
error = alter_table_add_index(altered_table, ha_alter_info);
} else
if (ha_alter_info->handler_flags & (Alter_inplace_info::DROP_INDEX + Alter_inplace_info::DROP_UNIQUE_INDEX)) {
}
if (error == 0 && (handler_flags & (Alter_inplace_info::DROP_INDEX + Alter_inplace_info::DROP_UNIQUE_INDEX))) {
error = alter_table_drop_index(altered_table, ha_alter_info);
} else
if (ha_alter_info->handler_flags & Alter_inplace_info::ADD_COLUMN) {
}
if (error == 0 && (handler_flags & Alter_inplace_info::ADD_COLUMN)) {
error = alter_table_add_or_drop_column(altered_table, ha_alter_info);
} else
if (ha_alter_info->handler_flags & Alter_inplace_info::DROP_COLUMN) {
}
if (error == 0 && (handler_flags & Alter_inplace_info::DROP_COLUMN)) {
error = alter_table_add_or_drop_column(altered_table, ha_alter_info);
} else
if ((ha_alter_info->handler_flags & Alter_inplace_info::CHANGE_CREATE_OPTION) &&
create_info->used_fields == HA_CREATE_USED_AUTO) {
}
if (error == 0 && (handler_flags & Alter_inplace_info::CHANGE_CREATE_OPTION) &&
(create_info->used_fields & HA_CREATE_USED_AUTO)) {
error = write_auto_inc_create(share->status_block, create_info->auto_increment_value, transaction);
} else
if ((ha_alter_info->handler_flags & Alter_inplace_info::CHANGE_CREATE_OPTION) &&
create_info->used_fields == HA_CREATE_USED_ROW_FORMAT) {
}
if (error == 0 && (handler_flags & Alter_inplace_info::CHANGE_CREATE_OPTION) &&
(create_info->used_fields & HA_CREATE_USED_ROW_FORMAT)) {
enum toku_compression_method method = TOKU_NO_COMPRESSION;
method = row_type_to_compression_method(create_info->row_type);
......@@ -1046,6 +1051,7 @@ ha_tokudb::commit_inplace_alter_table(TABLE *altered_table, Alter_inplace_info *
TOKUDB_DBUG_ENTER("commit_inplace_alter_table");
bool result = false; // success
ulong handler_flags = fix_handler_flags(ha_alter_info, table, altered_table);
if (commit) {
if (altered_table->part_info == NULL) {
......@@ -1070,12 +1076,12 @@ ha_tokudb::commit_inplace_alter_table(TABLE *altered_table, Alter_inplace_info *
}
if (!commit || result == true) {
if (ha_alter_info->handler_flags & (Alter_inplace_info::ADD_INDEX + Alter_inplace_info::ADD_UNIQUE_INDEX)) {
if (handler_flags & (Alter_inplace_info::ADD_INDEX + Alter_inplace_info::ADD_UNIQUE_INDEX)) {
ha_tokudb_add_index_ctx *ctx = static_cast<ha_tokudb_add_index_ctx *>(ha_alter_info->handler_ctx);
assert(ctx);
restore_add_index(table, ha_alter_info->index_add_count, ctx->incremented_num_DBs, ctx->modified_DBs);
} else
if (ha_alter_info->handler_flags & (Alter_inplace_info::DROP_INDEX + Alter_inplace_info::DROP_UNIQUE_INDEX)) {
}
if (handler_flags & (Alter_inplace_info::DROP_INDEX + Alter_inplace_info::DROP_UNIQUE_INDEX)) {
// translate KEY pointers to indexes into the key_info array
uint index_drop_offsets[ha_alter_info->index_drop_count];
for (uint i = 0; i < ha_alter_info->index_drop_count; i++)
......@@ -1083,6 +1089,7 @@ ha_tokudb::commit_inplace_alter_table(TABLE *altered_table, Alter_inplace_info *
restore_drop_indexes(table, index_drop_offsets, ha_alter_info->index_drop_count);
}
// TODO undo auto increment, row format change
}
DBUG_RETURN(result);
......
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