Comments (5)
https://dev.mysql.com/doc/refman/5.6/en/innodb-create-index-overview.html
we need to revisit exactly which of these we can/want to support.
From what I understand, we want to make CREATE INDEX
fully online (still allows DML statements to occur).
Also on the roadmap would be renaming columns, default value changes, changing default auto increment value, adding/dropping columns.
For adding/dropping columns, it's unclear to me exactly how online DDL will be faster since it still needs to copy the table under the hood, even according to the documentation above for InnoDB. Need to investigate more here.
from mysql-5.6.
hello @alxyang . what's going on with online DDL feature?
from mysql-5.6.
Currently we have higher priorities for 1. supporting MyRocks in MySQL 8.0 and 2. improving MyRocks/RocksDB performance. About online schema change, there are several existing solutions like https://github.com/github/gh-ost so it is not the highest priority. We will be likely to start supporting major features like online schema change based on MySQL 8.0, not 5.6.
from mysql-5.6.
@yoshinorim Thank you. we are going to add this feature in MySQL 5.7, if it work perfectly, we can summit a path for you
from mysql-5.6.
@baotiao That is great. Please submit a pull request once it is ready!
from mysql-5.6.
Related Issues (20)
- Wrong query plan for tpcc stock_level HOT 2
- MyRocks memory grows unlimitedly after a lot of compactions HOT 15
- Warning from compiling clone_os.cc HOT 6
- advisable to use many databases or many more tables?
- MyRocks 8.0.28 hangs during the insert benchmark HOT 6
- force_flush_memtable_and_lzero_now always compacts to physical L1
- Make compilation faster HOT 1
- How to achieve ~20% replication throughput improvement using Read Free Replication (RFR) feature
- Keep long-running MyRocks mtr tests in their own suite HOT 1
- MyRocks 8.0.28 has poor performance of primary key range query HOT 1
- create secondary index needs attention
- issue while install HOT 1
- Error during create secondary index
- Update the Build Steps page HOT 1
- MyRocks engine should respect WITH_UNIT_TESTS
- Allow users to manually set the number of block cache shards HOT 1
- Provide a counter to show pending compaction bytes for RocksDB
- MyRocks does commit step non-durably under server group 2PC protocol HOT 1
- alter talbe add index optimization
- Range lock support HOT 2
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from mysql-5.6.