This is the Doris Weekly Report of 2020.08.17 - 2020.08.23
# Statistic A total of 14 authors submitted 29 Commits this week. Thanks to the contributions of the following authors: Mingyu Chen, ZhangYu0123, EmmyMiao87, HappenLee, lichaoyong, Zhengguo Yang, zhbinbin, xinghuayu007, caoyang10, bigdataplumber, Yingchun Lai, WangCong, Stalary, Janko This week, the 7462 lines were added and the 1427 lines were deleted, involving a total of 3963 files. # Main progress ## New Feature（Merged） https://github.com/apache/incubator-doris/pull/4255 Support repairing damaged tablets by filling in empty tablets https://github.com/apache/incubator-doris/pull/4347 Added replace() function ## New Feature（WIP） https://github.com/apache/incubator-doris/pull/4310 Support Batch Delete function ## Bug Fixed https://github.com/apache/incubator-doris/pull/4350 Fix the problem that the BE process crashed due to the orc::TimezoneError not being caught when loading ORC format files https://github.com/apache/incubator-doris/pull/4369 Fix the issue that the result of the Except operator is incorrect https://github.com/apache/incubator-doris/pull/4352 Fix the problem that when querying ES data, the query is always routed to the same BE node https://github.com/apache/incubator-doris/pull/4324 Fix the problem that the operation is not correctly persisted when setting the global variable https://github.com/apache/incubator-doris/pull/4345 Fixed the issue that the MemTracker was not constructed correctly in PushHandler which caused the BE process to crash https://github.com/apache/incubator-doris/pull/4379 Fix the problem of loading blank lines when loading Json data format https://github.com/apache/incubator-doris/pull/4382 Fix the problem that the SQL rewriting rules failed to correctly handle count distinct https://github.com/apache/incubator-doris/pull/4375 Fix the problem that the data model type of the materialized view is not set correctly when creating the materialized view https://github.com/apache/incubator-doris/pull/4417 Fix the problem of wrong query result of left semi/anti join ## Enhancement https://github.com/apache/incubator-doris/pull/4365 SQL supports collate utf8_general_ci syntax to improve MySQL syntax compatibility https://github.com/apache/incubator-doris/pull/4212 A new compaction selection algorithm is implemented, providing lower write amplification and a more reasonable compaction strategy https://github.com/apache/incubator-doris/pull/4366 Optimize bit operation efficiency in variable length coding ## Others https://github.com/apache/incubator-doris/pull/4198 Added third-party UDF to support more efficient set calculation of orthogonal bitmap data https://github.com/apache/incubator-doris/pull/4377 Added UnixODBC third-party library dependency to support ODBC external table function # Main features in development https://github.com/apache/incubator-doris/issues/2581 Support SQL result cache https://github.com/apache/incubator-doris/issues/4376 Support to access external tables through ODBC protocol https://github.com/apache/incubator-doris/issues/4308 Support the separation of the front-end UI and back-end service of the FE module, providing a more powerful UI interface https://github.com/apache/incubator-doris/issues/3926 Support data spill in query process https://github.com/apache/incubator-doris/issues/4051 Support the Batch Delete function on the Unique Key model https://github.com/apache/incubator-doris/issues/3930 Supports sorting according to the specified Sequence column when loading data to the Unique Key model -- 此致！Best Regards 陈明雨 Mingyu Chen Email: chenmin...@apache.org
