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PS-10085 MyRocks limitations section still showing the Online DDL limitation part
modified: docs/limitations.md
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docs/limitations.md

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The MyRocks storage engine lacks the following features compared to InnoDB:
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* [Online DDL](https://dev.mysql.com/doc/refman/8.0/en/innodb-online-ddl.html) is not supported due to the lack of atomic DDL support.
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* [Online DDL](https://dev.mysql.com/doc/refman/8.0/en/innodb-online-ddl.html) is generally **not supported** due to the lack of atomic DDL support.
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* There is no `ALTER TABLE ... ALGORITHM=INSTANT` functionality
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As of Percona Server for MySQL 8.0.42-33, a limited set of **Instant DDL operations** are supported in RocksDB, controlled by specific variables:
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* A partition management operation only supports the `COPY` algorithms, which rebuilds the partition table and moves the data based on the new `PARTITION ... VALUE` definition. In the case of `DROP PARTITION`, the data not moved to another partition is deleted.
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| Configuration Option |
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|--------------------------------------------------------------|
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| [`--rocksdb_enable_instant_ddl_for_append_column`](variables.md#rocksdb_enable_instant_ddl_for_append_column)|
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| [`--rocksdb_enable_instant_ddl_for_column_default_changes`](variables.md#rocksdb_enable_instant_ddl_for_column_default_changes) |
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| [`--rocksdb_enable_instant_ddl_for_drop_index_changes`](variables.md#rocksdb_enable_instant_ddl_for_drop_index_changes) |
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| [`--rocksdb_enable_instant_ddl_for_table_comment_changes`](variables.md#rocksdb_enable_instant_ddl_for_table_comment_changes) |
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* There is no `ALTER TABLE ... ALGORITHM=INSTANT` functionality
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* A partition management operation only supports the `COPY` algorithms, which rebuilds the partition table and moves the data based on the new `PARTITION ... VALUE` definition. In the case of `DROP PARTITION`, the data not moved to another partition is deleted.
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* [ALTER TABLE .. EXCHANGE PARTITION](https://dev.mysql.com/doc/refman/8.0/en/partitioning-management-exchange.html).
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