Auctionmark on MyRocks

[samehdi]

Config file and ddl file for running the Auctionmark benchmark on MyRocks. Differences include:

1. Setting the transaction isolation level to REPEATABLE_READ since that is the highest level MyRocks supports.

2. In the ddl file, commenting out Foreign Key constraints since MyRocks does not support them

3. Adding the following index
   CREATE INDEX IDX_ITEM_BID ON ITEM_BID (ib_i_id, ib_u_id);
   The reason is that when the foreign key constraints are removed above, implicit secondary indexes for those constraints are also not created (https://dev.mysql.com/doc/refman/5.6/en/create-table-foreign-keys.html). The above index is required for performance otherwise getMaxBidId query in NewBid.java takes orders of magnitude more time with reasonably large scale factors and kills performance.

[apavlo]

This looks reasonable to me. I will merge when the build passes.

[samehdi]

Thanks. Although I am thinking that explicit indexes should be added for all other foreign key constraints that were commented out as well. That would provide a more accurate comparison with other databases (e.g. mysql-innodb) that currently support foreign keys and will therefore pay the overhead of maintaining those implicit indexes on this benchmark.