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https://github.com/neondatabase/neon.git
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1c0ff3c04d
We want to export performance traces from the pageserver in OTEL format. End goal is to see them in Grafana. To this end, there are two changes here: 1. Update the `tracing-utils` crate to allow for explicitly specifying the export configuration. Pageserver configuration is loaded from a file on start-up. This allows us to use the same flow for export configs there. 2. Update the `utils::logging::init` common entry point to set up OTEL tracing infrastructure if requested. Note that an entirely different tracing subscriber is used. This is to avoid interference with the existing tracing set-up. For now, no service uses this functionality. PR to plug this into the pageserver is [here](https://github.com/neondatabase/neon/pull/11140). Related https://github.com/neondatabase/neon/issues/9873
71 lines
2.2 KiB
Rust
71 lines
2.2 KiB
Rust
use once_cell::sync::OnceCell;
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use pageserver_compaction::interface::CompactionLayer;
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use pageserver_compaction::simulator::MockTimeline;
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use utils::logging;
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static LOG_HANDLE: OnceCell<()> = OnceCell::new();
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pub(crate) fn setup_logging() {
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LOG_HANDLE.get_or_init(|| {
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logging::init(
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logging::LogFormat::Test,
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logging::TracingErrorLayerEnablement::EnableWithRustLogFilter,
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logging::Output::Stdout,
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)
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.expect("Failed to init test logging");
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});
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}
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/// Test the extreme case that there are so many updates for a single key that
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/// even if we produce an extremely narrow delta layer, spanning just that one
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/// key, we still too many records to fit in the target file size. We need to
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/// split in the LSN dimension too in that case.
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#[tokio::test]
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async fn test_many_updates_for_single_key() {
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setup_logging();
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let mut executor = MockTimeline::new();
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executor.target_file_size = 1_000_000; // 1 MB
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// Ingest 10 MB of updates to a single key.
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for _ in 1..1000 {
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executor.ingest_uniform(100, 10, &(0..100_000)).unwrap();
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executor.ingest_uniform(1000, 10, &(0..1)).unwrap();
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executor.compact().await.unwrap();
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}
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// Check that all the layers are smaller than the target size (with some slop)
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for l in executor.live_layers.iter() {
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println!("layer {}: {}", l.short_id(), l.file_size());
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}
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for l in executor.live_layers.iter() {
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assert!(l.file_size() < executor.target_file_size * 2);
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// Sanity check that none of the delta layers are empty either.
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if l.is_delta() {
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assert!(l.file_size() > 0);
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}
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}
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}
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#[tokio::test]
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async fn test_simple_updates() {
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setup_logging();
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let mut executor = MockTimeline::new();
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executor.target_file_size = 500_000; // 500 KB
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// Ingest some traffic.
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for _ in 1..400 {
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executor.ingest_uniform(100, 500, &(0..100_000)).unwrap();
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}
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for l in executor.live_layers.iter() {
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println!("layer {}: {}", l.short_id(), l.file_size());
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}
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println!("Running compaction...");
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executor.compact().await.unwrap();
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for l in executor.live_layers.iter() {
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println!("layer {}: {}", l.short_id(), l.file_size());
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}
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}
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