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Add note about limitation for multikey indexes (#3114)
* Add limitation * Add translations
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‎doc/book/box/limitations.rst

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@@ -49,6 +49,15 @@ Limitations
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such as :ref:`Number of bytes in a tuple <limitations_bytes_in_tuple>`,
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not by the index support.
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.. _limitations_fields_in_tuple_multikey_index:
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**Number of elements in array fields in a space with a multikey index**
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In a Tarantool space that has :ref:`multikey indexes <box_space-path_multikey>`,
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any tuple cannot contain more than ~8,000 elements in a field indexed with that multikey index.
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This is because every element has 4 bytes of metadata, and the tuple's metadata,
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which includes multikey metadata, cannot exceed 2^16 bytes.
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.. _limitations_number_of_spaces:
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**Number of spaces**

‎doc/reference/reference_lua/box_space/create_index.rst

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@@ -536,16 +536,18 @@ The result of the select request looks like this:
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Some restrictions exist:
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* ``[*]`` must be alone or must be at the end of a name in the path
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* ``[*]`` must not appear twice in the path
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* if an index has a path with ``x[*]`` then no other index can have a path with
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x.component
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* ``[*]`` must not appear in the path of a primary-key
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* if an index has ``unique=true`` and has a path with ``[*]``
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then duplicate keys from different tuples are disallowed but duplicate keys
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for the same tuple are allowed
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* the field's value must have the same structure as in the path definition,
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or be nil (nil is not indexed)
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* ``[*]`` must be alone or must be at the end of a name in the path.
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* ``[*]`` must not appear twice in the path.
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* If an index has a path with ``x[*]``, then no other index can have a path with
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x.component.
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* ``[*]`` must not appear in the path of a primary key.
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* If an index has ``unique=true`` and has a path with ``[*]``,
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then duplicate keys from different tuples are disallowed, but duplicate keys
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for the same tuple are allowed.
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* The field's value must have the same structure as in the path definition,
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or be nil (nil is not indexed).
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* In a space with multikey indexes, any tuple cannot contain
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:ref:`more than ~8,000 elements <limitations_fields_in_tuple_multikey_index>` indexed that way.
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.. _box_space-index_func:
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‎locale/ru/LC_MESSAGES/book/box/limitations.po

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@@ -71,6 +71,20 @@ msgstr ""
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"такими факторами, как :ref:`количество байтов в кортеже "
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"<limitations_bytes_in_tuple>`, а не параметрами индекса."
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msgid "**Number of elements in array fields in a space with a multikey index**"
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msgstr "**Количество элементов в полях-массивах, входящих в индекс по массиву (multikey)**"
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msgid ""
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"In a Tarantool space that has :ref:`multikey indexes <box_space-path_multikey>`, "
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"any tuple cannot contain more than ~8,000 elements in a field indexed with that multikey index. "
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"This is because every element has 4 bytes of metadata, and the tuple's metadata, "
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which includes multikey metadata, cannot exceed 2^16 bytes."
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msgstr ""
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"В спейсе, где определен один или несколько :ref:`индексов по массивам <box_space-path_multikey>` "
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"(multikey), кортеж может содержать не более ~8000 элементов в каждом поле-массиве. "
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"Это связано с тем, что метаданные каждого элемента занимают 4 байта, а объем метаданных кортежа, "
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"включая метаданные индекса, не может превышать 2^16 байтов."
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msgid "**Number of spaces**"
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msgstr "**Количество спейсов**"
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‎locale/ru/LC_MESSAGES/reference/reference_lua/box_space/create_index.po

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@@ -937,37 +937,45 @@ msgstr ""
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msgid "Some restrictions exist:"
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msgstr "Есть некоторые ограничения:"
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msgid "``[*]`` must be alone or must be at the end of a name in the path"
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msgstr "символ ``[*]`` должен стоять отдельно или в конце имени в пути"
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msgid "``[*]`` must be alone or must be at the end of a name in the path."
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msgstr "символ ``[*]`` должен стоять отдельно или в конце имени в пути."
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msgid "``[*]`` must not appear twice in the path"
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msgstr "символ ``[*]`` не должен повторяться в пути"
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msgid "``[*]`` must not appear twice in the path."
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msgstr "символ ``[*]`` не должен повторяться в пути."
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msgid ""
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"if an index has a path with ``x[*]`` then no other index can have a path "
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"with x.component"
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"If an index has a path with ``x[*]``, then no other index can have a path "
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"with x.component."
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msgstr ""
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"если в индексе есть путь с ``x[*]``, то в никаком другом индексе не может "
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"быть пути с x.компонентом"
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"Если в индексе есть путь с ``x[*]``, то в никаком другом индексе не может "
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"быть пути с x.компонентом,"
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msgid "``[*]`` must not appear in the path of a primary-key"
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msgstr "``[*]`` нельзя указывать в пути первичного ключа"
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msgid "``[*]`` must not appear in the path of a primary key."
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msgstr "``[*]`` нельзя указывать в пути первичного ключа."
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msgid ""
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"if an index has ``unique=true`` and has a path with ``[*]`` then duplicate "
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"keys from different tuples are disallowed but duplicate keys for the same "
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"tuple are allowed"
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"If an index has ``unique=true`` and has a path with ``[*]``, then duplicate "
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"keys from different tuples are disallowed, but duplicate keys for the same "
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"tuple are allowed."
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msgstr ""
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"если индекс должен быть уникальным (``unique=true``), и в нем есть путь с "
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"Если индекс должен быть уникальным (``unique=true``) и в нем есть путь с "
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"символом ``[*]``, то запрещается использовать дублирующиеся ключи в разных "
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"кортежах, но в в одном кортеже можно использовать дублирующиеся ключи"
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"кортежах, но в в одном кортеже можно использовать дублирующиеся ключи."
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msgid ""
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"the field's value must have the same structure as in the path definition, or"
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" be nil (nil is not indexed)"
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"The field's value must have the same structure as in the path definition, or"
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" be nil (nil is not indexed)."
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msgstr ""
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"структура значения поля должна соответствовать стуктуре, заданной в "
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"определении пути, или значение поля должно быть nil (nil не индексируется)"
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"Структура значения поля должна соответствовать стуктуре, заданной в "
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"определении пути, или значение поля должно быть nil (nil не индексируется).
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msgid ""
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"In a space with multikey indexes, any tuple cannot contain "
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":ref:`more than ~8,000 elements <limitations_fields_in_tuple_multikey_index>` indexed that way."
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msgstr ""
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"В спейсе с индексами по массивам можно хранить не более "
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":ref:`~8000 элементов <limitations_fields_in_tuple_multikey_index>`, "
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"проиндексированных таким образом."
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msgid "Creating a functional index"
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msgstr "Создание функционального индекса"

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