1. Disable the MySQL client and LZO library by default when building the Doris.
MySQL client library is used for MySQL external table feature.
This feature will be replaced by the new ODBC external table soon.
LZO library is used to compress/decompress data of some old data format of Doris,
which is no longer used anymore.
2. Add missing license to some files.
3. For all non-Apache-License code, all are explained in NOTICE file and the corresponding license is declared.
4. Remove the js source code from webroot, it will be downloaded as thirdparty
A new feature has been added to acquire tablet id and schema hash of all the tablets on a particular BE node
via Web page，so that more detailed information of each tablet can be obtained according to these
tablet id and schema hash. In accordance with different web request, there are two ways
(table and json)to show these acquired tablet id and schema hash on Web page.
This CL mainly includes:
- add some methods to get thread's stats from Linux's system file in
env.
- support get thread's stats by http method.
- register page handle in BE to show thread's stats to help developer
position some thread relate problem.
cpp-mustache is a C++ implementation of a Mustache template engine
with support for RapidJSON, and in order to simplify RapidJSON object
building, we introduce class EasyJson from Apache Kudu.
