For now, there are 3 packages for the release binaries of Doris: https://doris.apache.org/download
And user may be confused about how to download and deploy these packages.
So I provide a download script for each release, and user can simply download the script and run it, like:
```
> sh download_x64_apache.sh
Begin to download FE from "https://mirrors.tuna.tsinghua.edu.cn/apache/doris/1.2/1.2.3-rc02/apache-doris-fe-1.2.3-bin-x86_64.tar.xz" to "apache-doris-1.2.3-bin/" ...
Total size: 408078012 Bytes
#################################################### 100.0%
Begin to download BE from "https://mirrors.tuna.tsinghua.edu.cn/apache/doris/1.2/1.2.3-rc02/apache-doris-be-1.2.3-bin-x86_64.tar.xz" to "apache-doris-1.2.3-bin/" ...
Total size: 606211324 Bytes
#################################################### 100.0%
Begin to download DEPS from "https://mirrors.tuna.tsinghua.edu.cn/apache/doris/1.2/1.2.3-rc02/apache-doris-dependencies-1.2.3-bin-x86_64.tar.xz" to "apache-doris-1.2.3-bin/" ...
Total size: 253869148 Bytes
#################################################### 100.0%
Begin to assemble the binaries ...
Move java-udf-jar-with-dependencies.jar to be/lib/ ...
Download complete!
You can now deploy Apache Doris from apache-doris-1.2.3-bin/
```
The script will do the rest.
This script will later be published on the Download page of Apache Doris website, so that user can easily get
it and use it.
Currently only for Linux platform. Other platform is untested.
1. change clucene version from 2.4.4->2.4.6
2. update build-thirdparty.sh clucene's build block, adding USE_BTHREAD CMAKE flag, this flag is inherited from doris's USE_BTHREAD_SCANNER.
Upgrade simdjson from 1.0.2 to latest version 3.0.1 to avoid -mlzcnt compiler flag causing BE UT(macOS) failure.
simdjson is now only used by VJsonScanner and disabled by default. So the impact of upgrade is limited.
hyperscan is a high-performance regular expression matching library, but can not be used on ARM.
vectorscan is an ARM port for hyperscan, it can be used as a drop in replacement.
Since hyperscan is original created by Intel and is popular and mature on x86, so we just use vectorscan
only for aarch64 when build thirdparty.
Nereids(new optimizer) code base
Nereids is new query planner for Doris. It include three main parts: parser, analyzer and optimizer.
The parser, generated by ANTLR4, transforms SQL into a logical plan with a tree structure. Analysis and optimization are performed on the logical plan of the tree structure. Each transformation is defined as a rule. The rule is applied to the logical plan using pattern matching. The implementation of the optimizer follows the approach in the Cascades paper.
In #8319, I remove mysql-connector-java dependency because of license incompatibility.
But we need a mysql compatible driver for http query api. So I choose mariadb-java-client,
which is under LGPL.
