Release Note 2.0.1

Thanks to our community users and developers, 489 improvements and bug fixes have been made in Doris 2.0.2.

Behavior Changes

• [Fix](Planner) remove json -> operator convert to json_extract #24679 remove json '->' operator since it is conflicted with lambda function syntax. It's a syntax sugar for function json_extract and can be replaced with the former.
• [Improve](metadata)Start the script to set metadata_failure_recovery #24308 move metadata_failure_recovery from fe.conf to start_fe.sh argument to prevent being used unexpectedly.
• [enhancement](fix)change ordinary type null value is \N,complex type null value is null #24207
• [Enhance](ip)optimize priority_ network matching logic for be #23795
• [fix](load) fix cancel load failed because Job could not be cancelled… #17730 allow cancel a retrying load job.

Improvements

Easier to use

• [improvemnt](script) support custom lib dir to save custom libs #23887 add a custom_lib dir to allow users place custom lib files and custom_lib will not be replaced.
• [Enhance](ip)optimize priority_ network matching logic #23784 optimize priority_network logic to avoid error when this config is wrong or not configured.
• [Enhance](auth)row policy support role #23022 support role based auth for row policy.

New optimizer Nereids statistics collection improvement

• [Improvement](statistics)Disable file cache while running analysis tasks. #23663
• [Improvement](statistics)Show column stats even when error occurred. #23703
• [Improvement](statistics)Support basic jdbc external table stats collection. #23965
• [opt](Nereids)skip unknown col stats check on __internal_scheam and information_schema  #24625

Better support for jdbc, hdfs, hive, mysql, max compute multi-catalog

• [Feature](multi-catalog) Support hadoop viewfs. #24168
• [improvement](catalog) avoid calling checksum when replaying creating jdbc catalog and fix ranger issue #22369
• [improvement](jdbc catalog) optimize the JDBC Catalog connection error message #23868 improve property check and error message for jdbc catalog
• [fix](multi-catalog)fix mc decimal type parse, fix wrong obj location #24242 fix some issues for max compute catalog
• [Feature](multi-catalog) Support sql cache for hms catalog #23391 sql cache for hive catalog
• [Enhancement](multi-catalog) merge hms partition events. #22869 improve performance for hive metadata sync
• [feature](information_schema)add metadata_name_ids for quickly get catlogs,db,table and add profiling table in order to Compatible with mysql #22702

performance for inverted index query

• [Enhancement](inverted index) add bkd index query cache to improve perf #23952
• [Improve](count on index) improve performance for count on index other than match #24678
• [Improve](inverted index) improve match performance without index #24751
• [Optimize](invert index) Optimize multiple terms conjunction query #23871 improve performance of MATCH_ALL
• [optimize](match) optimize unnecessary conversions #24389 improve performance of MATCH

improve array functions

• [FIX](array) fix old optimizer with some array literal functions #23630
• [Improve](array-func)improve array union support multi params #24327
• [Improve](explode) improve explode func with array nested complex type #24455

Important Bug fixes

• [fix](view) The parameter positions of timestamp diff function to sql are reversed #23601
• [FIX](array) fix old optimizer with some array literal functions #23630
• [Fix](cache) fix query cache returns wrong result after deleting partitions. #23555
• [fix](cooldown) Fix potential data loss when clone task's dst tablet is cooldown replica #17644
• [FIX](array/map)fix array map batch append data with right next_array_item_rowid #23779
• [fix](Nereids) fix or to in rule #23940
• [fix](planner)fix 'char' function's toSql implementation is wrong #23860
• [fix](Nereids) record wrong best plan properties #23973
• [fix](Nereids) make TVF's distribution spec always be RANDOM #24020
• [fix](nereids) external scan use STORAGE_ANY instead of ANY as distibution #24039
• [fix](nereids) bug: ( branch 2.0 )runtimefilter target is not SlotReference #23958
• [fix](Nereids) mv in select materialized_view should disable show table #24104
• [debug](FileCache) fail over to remote file reader if local cache failed #24097
• [Fix](auth) fix revoke role operation cause fe down #23852
• [Fix](Status) Handle status code correctly and add a new error code ENTRY_NOT_FOUND #24139
• [Fix](status)Fix leaky abstraction and shield the status code END_OF_FILE from upper layers #24165
• [fix](csv_reader)fix bug that Read garbled files caused be crash. #24164
• [fix](Table-Valued Function) fix be core when user sepcified empty column_separator using hdfs tvf #24369
• [fix](java-udf)Fix need to restart BE after replacing the jar package in java-udf #24372
• [fix](agg) need to call 'set_version' in nested functions #24381
• [fix](agg) windown_funnel compatibility issue with multi backends #24385
• [fix](nereids)correlated anti join shouldn't be translated to null aware anti join #24290
• [enhancement](fix)change ordinary type null value is \N,complex type null value is null #24207
• [fix](stats) Fix analyze failed when there are thousands of partitions. #24521
• [fix](Java UDF) Do not use enum as the data type for JavaUdfDataType. #24460
• [fix](nereids) fix multi window projection issue temporarily #24568
• [compatibility](optimizer) Make metadata compatible with 2.0.3 #24610
• [fix](Nereids) select outfile column order is wrong #24595
• [fix](nested_join) incorrect result of semi/anti mark join #24616
• [fix](broker) fix broker read issue #24635
• [opt](Nereids)skip unknown col stats check on __internal_scheam and information_schema  #24625
• [fix](csv_reader)Fixed bug when parsing multi-character delimiters. #24572
• [fix](timezone) fix timezone parse when there is no tzfile #24578
• [chore](thirdparty)We need to issue an error when starting FE without setting the Java home environment #23943
• [Fix](merge-on-write) enable_unique_key_partial_update should be forwarded to master #24697
• [fix](fe-meta) fix paimon file catalog meta issue and replication num analysis issue #24681
• [Fix](binlog) Add more log for ingest_binlog && Fix ingest_binlog not rewrite rowset_meta tablet_uid #24617
• [enhancement](config) do not abort when a disk is broken #24692
• [fix](Nereids) colocate join could not work well on full outer join #24700
• [optimize](match) optimize unnecessary conversions #24389
• [enhancement](csv_reader)Optimize the reading efficiency of nullable (string) columns. #24698
• [Fix](core) Fix segment cache core when output rowset is nullptr #24778
• [fix](merge-on-write) fix duplicate key in schema change #24782
• [compatibility](metadata) Make metadata compatible for future version after 2.0.2 #24800
• [FIX](serde) fix map/array deserialize string with quote pair #24808
• [fix](compile) failed on arm platform, with clang compiler and pch on, close #24633 #24636
• [fix](schema) Table column order is changed if add a column and do truncate #24981
• [Fix](inverted index) make parser mode coarse grained by default #24949

See the complete list of improvements and bug fixes on github .

Big Thanks

Thanks all who contribute to this release:

@adonis0147
@airborne12
@amorynan
@AshinGau
@BePPPower
@BiteTheDDDDt
@bobhan1
@ByteYue
@caiconghui
@CalvinKirs
@cambyzju
@ChengDaqi2023
@ChinaYiGuan
@CodeCooker17
@csun5285
@dataroaring
@deadlinefen
@DongLiang-0
@Doris-Extras
@dutyu
@eldenmoon
@englefly
@freemandealer
@Gabriel39
@gnehil
@GoGoWen
@gohalo
@HappenLee
@hello-stephen
@HHoflittlefish777
@hubgeter
@hust-hhb
@ixzc
@JackDrogon
@jacktengg
@jackwener
@Jibing-Li
@JNSimba
@kaijchen
@kaka11chen
@Kikyou1997
@Lchangliang
@LemonLiTree
@liaoxin01
@LiBinfeng-01
@liugddx
@luwei16
@mongo360
@morningman
@morrySnow
@mrhhsg
@Mryange
@mymeiyi
@neuyilan
@pingchunzhang
@platoneko
@qidaye
@realize096
@RYH61
@shuke987
@sohardforaname
@starocean999
@SWJTU-ZhangLei
@TangSiyang2001
@Tech-Circle-48
@w41ter
@wangbo
@wsjz
@wuwenchi
@wyx123654
@xiaokang
@XieJiann
@xinyiZzz
@XuJianxu
@xutaoustc
@xy720
@xyfsjq
@xzj7019
@yiguolei
@yujun777
@Yukang-Lian
@Yulei-Yang
@zclllyybb
@zddr
@zhangguoqiang666
@zhangstar333
@ZhangYu0123
@zhannngchen
@zxealous
@zy-kkk
@zzzxl1993
@zzzzzzzs