Lixin Wei

Unfortunately I have no idea so far except waiting for gRPC community's response. sad. We optmized the number of the call which caused OOM to work around this first.

Someone replied my question in Stackoverflow, I'll try it next Monday. https://stackoverflow.com/questions/72424145/how-to-do-server-side-backpressure-in-grpc/73255069#73255069 UPDATE: Sadly it doesn't work.

一些小问题： 1. Tag感觉可以去掉了，和你添加的分类功能有所重复。 2. 题库页面，来源/分类列 内容能否居中下，看着很别扭  3. 有时间能否麻烦你在默认的数据库里增加一些测试数据，尽可能覆盖到所有模块（题库，分类，课程辅助，判提状态、比赛，榜单等），这样review起来方便点，不然每次都得自己造数据。用户第一次使用也可以看到所有功能。之后的新功能如果可能的话也配上测试数据吧，一build完就能看到。

@werkt Sure, here is the jstack output: [jstack.log](https://github.com/bazelbuild/bazel-buildfarm/files/8640331/jstack.log)

@werkt Thanks, I changed `cas_cache_max_size_bytes` and everything goes well!

@werkt BTW, just curious, would you please say more about why it was stuck? I want to know more about buildfarm so next time I can debug by myself further....

A wired thing is, when I run this action again, it will pass. This error only occurs when I build this action for the first time.

> Your output from bazel is also interesting: what version are you running? 3.4.1 > you can investigate using bf-cat to see what inputs the action I see, thx. I'll...

@werkt Got it! Thanks! What's the default value of `max_queue_depth ` and `max_prequeue_depth`? And I only found max_queue_depth in RedisShardBackplaneConfig. How to configure memory instance's queue size?

One more question. Will worker pull operations from other workers if the server's queue is empty? We have one operation that costs a lot of time. If it blocks one...