xianjingfeng opened a new pull request, #2567:
URL: https://github.com/apache/uniffle/pull/2567
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### What changes were proposed in this pull request?
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Remove metric `buffer_block_size`
### Why are the changes needed?
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Fix: # (issue)
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The observations of `Summary` are expensive due to the streaming quantile
calculation and `synchronized` is used in `Summary.observe`.
```shell
"epollEventLoopGroup-3-130" #341 prio=10 os_prio=0 cpu=51979.29ms
elapsed=2103.78s tid=0x000004c0882e7000 nid=0x486d waiting for monitor entry
[0x00007f21769e7000]
java.lang.Thread.State: BLOCKED (on object monitor)
at
io.prometheus.client.TimeWindowQuantiles.insert(TimeWindowQuantiles.java:36)
- waiting to lock <0x00000003006a7df8> (a
io.prometheus.client.TimeWindowQuantiles)
at io.prometheus.client.Summary$Child.observe(Summary.java:283)
at io.prometheus.client.Summary.observe(Summary.java:309)
at
org.apache.uniffle.server.buffer.SkipListShuffleBuffer.append(SkipListShuffleBuffer.java:62)
```
### Does this PR introduce _any_ user-facing change?
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No.
### How was this patch tested?
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CI
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