On December 12, 2018, TiDB 2.1.1 is released. Compared with TiDB 2.1.0, this release has great improvement in stability, SQL optimizer, statistics information, and execution engine.
uncompressfunction does not check the data length #8606
preparestatement after the
executecommand is executed #8652
ddl_reorg_batch_sizevariable to control the speed of adding indexes #8614
0in the configuration file #1334
RaftClustercannot stop caused by deadlock #1370
analyzemechanism on imported tables to increase the import speed