Release 1.2.6

Behavior Change

• Add a BE configuration item allow_invalid_decimalv2_literal to control whether can import data that exceeding the decimal's precision, for compatibility with previous logic.

Query

• Fix several query planning issues.
• Support sql_select_limit session variable.
• Optimize query cold run performance.
• Fix expr context memory leak.
• Fix the issue that the explode_split function was executed incorrectly in some cases.

Multi Catalog

• Fix the issue that synchronizing hive metadata caused FE replay edit log to fail.
• Fix refresh catalog operation causing FE OOM.
• Fix the issue that jdbc catalog cannot handle 0000-00-00 correctly.
• Fixed the issue that the kerberos ticket cannot be refreshed automatically.
• Optimize the partition pruning performance of hive.
• Fix the inconsistent behavior of trino and presto in jdbc catalog.
• Fix the issue that hdfs short-circuit read could not be used to improve query efficiency in some environments.
• Fix the issue that the iceberg table on CHDFS could not be read.

Storage

• Fix the wrong calculation of delete bitmap in MOW table.
• Fix several BE memory issues.
• Fix snappy compression issue.
• Fix the issue that jemalloc may cause BE to crash in some cases.

Others

• Fix several java udf related issues.
• Fix the issue that the recover table operation incorrectly triggered the creation of dynamic partitions.
• Fix timezone when importing orc files via broker load.
• Fix the issue that the newly added PERCENT keyword caused the replay metadata of the routine load job to fail.
• Fix the issue that the truncate operation failed to acts on a non-partitioned table.
• Fix the issue that the mysql connection was lost due to the show snapshot operation.
• Optimize the lock logic to reduce the probability of lock timeout errors when creating tables.
• Add session variable have_query_cache to be compatible with some old mysql clients.
• Optimize the error message when encountering an error of loading.

Big Thanks

Thanks all who contribute to this release:

@amorynan

@BiteTheDDDDt

@caoliang-web

@dataroaring

@Doris-Extras

@dutyu

@Gabriel39

@HHoflittlefish777

@htyoung

@jacktengg

@jeffreys-cat

@kaijchen

@kaka11chen

@Kikyou1997

@KnightLiJunLong

@liaoxin01

@LiBinfeng-01

@morningman

@mrhhsg

@sohardforaname

@starocean999

@vinlee19

@wangbo

@wsjz

@xiaokang

@xinyiZzz

@yiguolei

@yujun777

@Yulei-Yang

@zhangstar333

@zy-kkk