Zhong Chaoqiang

improve performance of count_data

11

### What problem does this PR solve? When we precisely count data for a large table, it will cost minutes or hours. ### What is changed and how does it...

potential replica may not be closed when dropped app

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## Bug Report 删除表的时候 如果该表有部分分片处于PS_POTENTIAL_SECONDARY状态,有概率出现replica-server遗留了potential状态的replica无法关闭 版本为2.0.0 下面是删除app(appid=3)后，通过remote_command查询到的replica信息 ``` D2021-09-17 06:40:44.606 (1631832044606185642 4017) replica.rep_long5.04010000000000b5: replica_stub.cpp:1707:on_gc(): start to garbage collection, replica_count = 4 D2021-09-17 06:40:44.606 (1631832044606199774 4017) replica.rep_long5.04010000000000b5: replica_stub.cpp:1746:on_gc(): gc_shared: gc condition...

Feature enhancement: throttling by the count of kvs

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Now, write request can be throttled by qps or size, read request can be throttled by qps. But there are some weaknesses of qps or size: - If throttling by...

data loss after restarting

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## Bug Report Please answer these questions before submitting your issue. Thanks! 1. What did you do? after restarting, data in replica my be loss. There are some messages in...

fix: fix data loss

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### What problem does this PR solve? Data loss becase wrong init_durable_decree in .init-info file. For details, see apache/incubator-pegasus#719 ### What is changed and how it works? using last_durable_decree for...

fix: maybe auth failed when session reconnect

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# Related-Issue https://github.com/apache/incubator-pegasus/issues/903 # Change fix: maybe auth failed when session reconnect