* Revised Timer Task Thread (#1862)

* add TimertaskManager, removed TimedscanThread.

* Rsync client support multi thread (#1866)

* define rsync related header file and proto

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Co-authored-by: Ncheniujh <41671101+cheniujh@users.noreply.github.com>
Co-authored-by: Nwangshao1 <30471730+wangshao1@users.noreply.github.com>

* Add diskrecovery command

* Add diskrecovery command

Co-authored-by: Nwangshaoyi <wangshaoyi@meituan.com>

* add go integrate test

* add go integrate test

* add go integrate test

* add go integrate test

* temp test

* temp test

* temp test

* temp test

* temp test

* temp test

* add test

* temp test

* temp test

* add tcl

* add tcl

* reformat code

* add tcl

* reformat code

* add tcl

* reformat code

* add tcl

* fix setxx

* fix setxx

* add tcl

* add tcl

* fix_slow_shut_down

* delete_consensus_level

* delete_consensus_level

* doc: add pika-operator 使用指南

* doc: add pika-operator to guide

* fix typo

Fixes: #1824
Signed-off-by: Nyaoyinnan <35447132+yaoyinnan@users.noreply.github.com>

Co-authored-by: Nleijiongbin <leijiongbin@kuaiji.com>

Remove the safety_purge label and fix binlog display errors.

Fixes: #1823
Signed-off-by: Nyaoyinnan <35447132+yaoyinnan@users.noreply.github.com>

* fix: resend msgs when client_thread send failed and narrow down critical section
Co-authored-by: Nwangshaoyi <wangshaoyi@meituan.com>

* add auto resume

* update resume code

* add conf code

* format code

* add min-check-resume-ratio

* fix: fix master-slave sync error

* fix by review comments

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Co-authored-by: Nwangshaoyi <wangshaoyi@meituan.com>
Co-authored-by: NXin.Zh <dragoncharlie@foxmail.com>

PikaReplServer cleanup connections when destroy function called, cleanup will trigger FdClosedHandle which calls already destroyed pikaserver.
So manually call cleanup ahead before pikaserver destroyed.
Co-authored-by: Nwangshaoyi <wangshaoyi@meituan.com>

* define rsync related header file and proto

* feat：add throttle (#167)

* add_throttle

* feat: implement rsync network tansform (#169)

implement rsync network transfer
Co-authored-by: Nwangshaoyi <wangshaoyi@meituan.com>

* fix action (#171)

* fix action

* fix

* feat: add load local meta file (#175)

* add load meta file

* [feat] add rsync client/server code (#177)

* implement rsync network transfer

* add rsyncclient to syncslaveslot (#182)

add rsyncclient to syncslaveslot

* feat: add read meta file and data (#179)

* add read meta file and data

* fix compile error (#183)

* fix bug

* add rsyncclient to syncslaveslot

* fix compile error

* fix compile error

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Co-authored-by: Nwangshaoyi <wangshaoyi@meituan.com>

* fix compile error (#184)

* fix bug

* optimize: add_throttle (#189)

optimize throttle

* rsyncclient periodically flush meta table (#192)

rsyncclient periodically flush meta table

* change rsync response (#190)

* change rsync response

* add debug log for test

* fix rsync client/server bugs

* fix bugs

* add debug log for test

* fix bugs

* fix bugs

* fix bugs

* rix rsync bugs (#194)

* fix pika rsync bug

* fix bugs

* fix bugs

* fix bugs 1

* fix bugs

* fix rsync bugs (#195)

* add debug log for test

* fix rsync client/server bugs

* fix bugs

* add debug log for test

* fix bugs

* fix bugs

* fix bugs

* fix bugs

* fix bugs

* fix bugs 1

* fix bugs

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Co-authored-by: Nwangshaoyi <wangshaoyi@meituan.com>

* remove unused code

* remove unused code

* remove unused code

* remove unused code

* add copyright

* fix by review comments (#213)
Co-authored-by: Nwangshaoyi <wangshaoyi@meituan.com>

* fix by review comments (#214)

* fix by review comments
Co-authored-by: Nwangshaoyi <wangshaoyi@meituan.com>

* fix by review comments (#216)

* fix by review comments
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Co-authored-by: Nwangshaoyi <wangshaoyi@meituan.com>

* Optimize rsync wangsy (#217)

* fix by review comments
Co-authored-by: Nwangshaoyi <wangshaoyi@meituan.com>

* fix by review comments (#218)

* fix by review comments
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Co-authored-by: Nwangshaoyi <wangshaoyi@meituan.com>

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Co-authored-by: Nwangshaoyi <wangshaoyi@meituan.com>
Co-authored-by: NYuecai Liu <38887641+luky116@users.noreply.github.com>
Co-authored-by: chejinge <945997690@qq.com>
Co-authored-by: Nluky116 <luky116@126.com>

This reverts commit f104cda7.

* turn off the TRACE output by default

* added a switch called "TRACE_ON"

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Co-authored-by: Ncjh <1271435567@qq.com>

* fix_blob_bug

* fix_conf_miss

* fix_centos7_start_coredump

Override the complete configuration of the exporter.

Fixes: #1799
Signed-off-by: Nyaoyinnan <yaoyinnan@foxmail.com>

* fix_blob_bug

* fix_conf_miss

* 支持cfstats监控数据采集

* 修改监控指标注释;修复时间解析错误bug;添加mac-amd64编译

* 添加监控指标说明

* bug fix

Signed-off-by: Nlizhen6 <lizhen6@360.cn>