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This topic has been translated from a Chinese forum by GPT and might contain errors.
Original topic: 启动tidb时报错，说是TiDB 在处理请求时发现没有可用的副本。
“This area is for non-technical exchanges.”
My configuration includes two TiKV, one TiDB, and one PD. The deployment and startup were successful before, but after recompiling and redeploying, it started to report errors. It had reported errors before, but then it mysteriously started working. I don’t know the reason. Could the experts please help me out? Thank you.
I didn’t see any obvious errors in your logs.
Remove one TiKV and keep only one TiKV node, then try to start it.
“throwing pseudo error due to no replica available” in the sixth line
The previous logs did not report any errors. TiDB failed to start and just timed out here.
I downgraded the version to 7.5, and it was able to start. But the TiDB, PD, and TiKV I pulled from git are all the latest version 8.1.0. The other components are used as they come.
Did you compile it yourself? Isn’t it the official release version obtained through tiup?
Yes, that’s correct. After compiling it yourself, you can point to your self-compiled TiDB binary file when deploying with tiup.
You need to pull the GA version (release version) on git, otherwise, it’s normal if it doesn’t run… 
8.1.0 isn’t finished yet, right?
It’s better to use the official GA.
Okay, okay, thank you. It was running at first, so I’ll try changing the version.
Yes, there might be some bugs. I’ll try downgrading the version to see if it helps. Thank you.
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