Charles Connell

test failures are unrelated

@Hexiaoqiao Thanks for having a look. This PR should only impact HDFS. There are changes in the IPC layer code, but I do not expect this will impact other components...

Two CPU profile flamegraphs catching the problem in action in an HBase server: [async-prof-flamegraph-cpu-1755850777556.html](https://github.com/user-attachments/files/22061511/async-prof-flamegraph-cpu-1755850777556.html) [async-prof-cpu-1756131323018.html](https://github.com/user-attachments/files/22061512/async-prof-cpu-1756131323018.html)

Okay, understood. I still had the question of whether `ic` is always so slow. Looking at how Linux handles the errata, it (well really the [firmware](https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/2173)) is trapping `ic` instructions....

Hi guys, following up on our conversation earlier today. I looked at the GC logs from a couple of representative HBase servers in our fleet. Both of them had 6...

> do you believe this evidence is sufficiently similar to your production workload analysis to represent a fair reproducer? To answer that confidently, can I ask you to check into...

Another option, which is simpler to reason about, is to simply fail the `SnapshotProcedure` if the table isn't in a state it can handle. This was my approach in HBASE-29315,...

We're not setting `hbase.wal.provider`, so in theory we ought to be using `AsyncFSWAL`, but the below stacktrace suggests we're using `FSHLog`, which I can't explain. The problem we see in...

I'm closing this to reconsider my approach