doris

Files

minghong f20ef165fe [opt](Nereids) update join stats derive (#20895 )

in hash join condition, some equals are trustable, some are not.
an equal is trustable if one side is almost unique, like primary key. for such equal condition we could estimate more accurate.
the problem is in rewriten q20, the are 2 equal condition, one is trustable, another is not. But we treat both of them as trustable.

Test result:
on tpch100, from 2.2 sec to 0.44 sec
no impact on tpch other queries
no performance impact on tpcds queries

2023-06-19 23:40:44 +08:00

be-java-extensions

[improvement](jdbc) support support get mysql information_schema's table and clickhouse system's table (#20768 )

2023-06-15 14:53:51 +08:00

check/checkstyle

[fix](catalog) fix create catalog with resource replay issue and kerberos auth issue (#20137 )

2023-05-30 16:57:39 +08:00

fe-common

[fix](match) fix regression case test_index_match_select and test_index_match_phrase (#20860 )

2023-06-16 20:18:29 +08:00

fe-core

[opt](Nereids) update join stats derive (#20895 )

2023-06-19 23:40:44 +08:00

hive-udf

[Improve](fe)Upgrade dependencies and optimize jar package management (#18882 )

2023-05-04 10:07:37 +08:00

spark-dpp

[Fix](multi-catalog) Fix some hive partition issues. (#19513 )

2023-05-11 07:49:46 +08:00

pom.xml

[enhancement](log4j) support high performance mode for log4j to escape potential bottleneck for doris read and write (#20759 )

2023-06-14 15:16:04 +08:00

README

…

README

# Licensed to the Apache Software Foundation (ASF) under one
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# to you under the Apache License, Version 2.0 (the
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# fe-common

This module is used to store some common classes of other modules.

# spark-dpp

This module is Spark DPP program, used for Spark Load function.
Depends: fe-common

# fe-core

This module is the main process module of FE.
Depends: fe-common, spark-dpp