[CHORE] Add tracing to blockfile gets (#2485)

## Description of changes

*Summarize the changes made by this PR.*
 - Improvements & Bug fixes
	 - Adds some tracing to reading block from cache/storage
	 - Adds some tracing to read from the block itself
 - New functionality
	 - None

## Test plan
*How are these changes tested?*
- [x] Tests pass locally with `pytest` for python, `yarn test` for js,
`cargo test` for rust

## Documentation Changes
None

rust/worker/src/blockstore/arrow/blockfile.rs

@@ -15,6 +15,7 @@ use parking_lot::Mutex;
 use std::{collections::HashMap, sync::Arc};
 use std::{collections::HashSet, mem::transmute};
 use thiserror::Error;
+use tracing::{trace_span, Instrument};
 use uuid::Uuid;
 
 #[derive(Clone)]
@@ -280,9 +281,15 @@ impl<'me, K: ArrowReadableKey<'me> + Into<KeyWrapper>, V: ArrowReadableValue<'me
     pub(crate) async fn get(&'me self, prefix: &str, key: K) -> Result<V, Box<dyn ChromaError>> {
         let search_key = CompositeKey::new(prefix.to_string(), key.clone());
         let target_block_id = self.sparse_index.get_target_block_id(&search_key);
-        let block = self.get_block(target_block_id).await;
+        let block = self
+            .get_block(target_block_id)
+            .instrument(tracing::info_span!("Get Block", block_id = %target_block_id))
+            .await;
         let res = match block {
-            Some(block) => block.get(prefix, key.clone()),
+            Some(block) => {
+                let block_get_span = tracing::info_span!("Block Get", block_id = %target_block_id);
+                block_get_span.in_scope(|| block.get(prefix, key.clone()))
+            }
             None => {
                 tracing::error!("Block with id {:?} not found", target_block_id);
                 return Err(Box::new(ArrowBlockfileError::BlockNotFound));