use parallelizable instead of distributable

Author: OussamaSaoudi

kernel/src/log_reader/checkpoint_leaf.rs

@@ -8,8 +8,8 @@ use crate::{DeltaResult, Engine, FileMeta};
 
 /// Phase that processes sidecar or leaf parquet files.
 ///
-/// This phase is distributable - you can partition `files` and create multiple
-/// instances on different executors.
+/// This phase is parrallelizable - you can partition `files` and create multiple
+/// instances on different threads/executors.
 #[allow(unused)]
 pub(crate) struct CheckpointLeafReader {
     actions: Box<dyn Iterator<Item = DeltaResult<ActionsBatch>> + Send>,
@@ -18,9 +18,9 @@ pub(crate) struct CheckpointLeafReader {
 impl CheckpointLeafReader {
     /// Create a new sidecar phase from file list.
     ///
-    /// # Distributability
+    /// # Parallelizability
     ///
-    /// This phase is designed to be distributable. To distribute:
+    /// This phase is designed to be parrallelizable. To parallelize:
     /// 1. Partition `files` across N executors/threads
     /// 2. Create N `CheckpointLeafReader` instances, one per executor with its file partition
     ///