Lightman 486cf0ebd4 [Feature] Lightweight schema change of add/drop column (#10136)
* [Schema Change] support fast add/drop column  (#49)

* [feature](schema-change) support fast schema change. coauthor: yixiutt

* [schema change] Using columns desc from fe to read data. coauthor: Lchangliang

* [feature](schema change) schema change optimize for add/drop columns.

1.add uniqueId field for class column.
2.schema change for add/drop columns directly update schema meta

Co-authored-by: yixiutt <yixiu@selectdb.com>
Co-authored-by: SWJTU-ZhangLei <1091517373@qq.com>

[Feature](schema change) fix write and add regression test (#69)

Co-authored-by: yixiutt <yixiu@selectdb.com>

[schema change] be ssupport that delete use newest schema

add delete regression test

fix regression case (#107)

tmp

[feature](schema change) light schema change exclude rollup and agg/uniq/dup key type.

[feature](schema change) fe olapTable maxUniqueId write in disk.

[feature](schema change) add rpc iface for sc add column.

[feature](schema change) add columnsDesc to TPushReq for ligtht sc.

resolve the deadlock when schema change (#124)

fix columns from fe don't has bitmap_index flag (#134)

add update/delete case

construct MATERIALIZED schema from origin schema when insert

fix not vectorized compaction coredump

use segment cache

choose newest schema by schema version when compaction (#182)

[bugfix](schema change) fix ligth schema change problem.

[feature](schema change) light schema change add alter job. (#1)

fix be ut

[bug] (schema change) unique drop key column should not light schema
change

[feature](schema change) add schema change regression-test.

fix regression test

[bugfix](schema change) fix multi alter clauses for light schema change. (#2)

[bugfix](schema change) fix multi clauses calculate column unique id (#3)

modify PushTask process (#217)

[Bugfix](schema change) fix jobId replay cause bdbje exception.

[bug](schema change) fix max col unique id repeatitive. (#232)

[optimize](schema change) modify pendingMaxColUniqueId generate rule.

fix compaction error
* fix be ut

* fix snapshot load core

fix unique_id error (#278)

[refact](fe) remove redundant code for light schema change. (#4)

[refact](fe) remove redundant code for light schema change. (#4)

format fe core

format be core

fix be ut

modify fe meta version

fix rebase error

flush schema into rowset_meta in old table

[refactor](schema change) refact fe light schema change. (#5)

delete the change of schemahash and support get max version schema

* modify for review

* fix be ut

* fix schema change test
2022-07-12 19:41:06 +08:00

Apache Doris

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Doris is an MPP-based interactive SQL data warehousing for reporting and analysis. Its original name was Palo, developed in Baidu. After donated to Apache Software Foundation, it was renamed Doris.

  • Doris provides high concurrent low latency point query performance, as well as high throughput queries of ad-hoc analysis.

  • Doris provides batch data loading and real-time mini-batch data loading.

  • Doris provides high availability, reliability, fault tolerance, and scalability.

The main advantages of Doris are the simplicity (of developing, deploying and using) and meeting many data serving requirements in a single system. For details, refer to Overview.

Official website: https://doris.apache.org/

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License

Apache License, Version 2.0

Note

Some licenses of the third-party dependencies are not compatible with Apache 2.0 License. So you need to disable some Doris features to be complied with Apache 2.0 License. For details, refer to the thirdparty/LICENSE.txt

Technology

Doris mainly integrates the technology of Google Mesa and Apache Impala, and it is based on a column-oriented storage engine and can communicate by MySQL client.

Compile and install

See Compilation

Getting start

See Basic Usage

Doris Connector

Doris provides support for Spark/Flink to read data stored in Doris through Connector, and also supports to write data to Doris through Connector.

apache/doris-flink-connector

apache/doris-spark-connector

Doris Manager

Doris provides one-click visual automatic installation and deployment, cluster management and monitoring tools for clusters.

apache/doris-manager

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If you find any bugs, feel free to file a GitHub issue or fix it by submitting a pull request.

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