In this release, Doris Team has fixed more than 170 issues or performance improvement since 1.1.1. This release is a bugfix release on 1.1 and all users are encouraged to upgrade to this release.
Introduced new MemTracker for both vectorized engine and non-vectorized engine which is more accurate.
Add API for showing current queries and kill query
Support read/write emoji of UTF16 via ODBC Table
Data Lake related improvements
Improved HDFS ORC File scan performance about 300%. #11501
Support HDFS HA mode when query Iceberg table.
Support query Hive data created by Apache Tez
Add Ali OSS as Hive external support.
Add support for string and text type in Spark Load
Add reuse block in non-vectorized engine and have 50% performance improvement in some cases. #11392
Improve like or regex performance
Disable tcmalloc's aggressive_memory_decommit
It will have 40% performance gains in load or query.
Currently it is a config, you can change it by set config
Some issues about FE that will cause FE failure or data corrupt.
Add reserved disk config to avoid too many reserved BDB-JE files.(Serious) In an HA environment, BDB JE will retains as many reserved files. The BDB-je log doesn't delete until approaching a disk limit.
Fix fatal bug in BDB-JE which will cause FE replica could not start correctly or data corrupted. (Serious)