Merge branch 'main' of https://git.doit.wisc.edu/cdis/cs/courses/cs544/s25/main

p4/README.md

@@ -14,7 +14,9 @@ Before starting, please review the [general project directions](../projects.md).
 
 ## Corrections/Clarifications
 
-* Mar 5: A hint about HDFS environment variables added; a dataflow diagram added; some minor typos fixed.
+- Mar 5: A hint about HDFS environment variables added; a dataflow diagram added; some minor typos fixed.
+
+- Mar 5: Fix the wrong expected file size in Part 1 and sum of blocks in Part 2.
 
 ## Introduction
 
@@ -96,9 +98,10 @@ In this part, your task is to implement the `DbToHdfs` gRPC call (you can find t
 4. Upload the generated table to `/hdma-wi-2021.parquet` in the HDFS, with **2x** replication and a **1-MB** block size, using PyArrow (https://arrow.apache.org/docs/python/generated/pyarrow.fs.HadoopFileSystem.html).
 
 To check whether the upload was correct, you can use `docker exec -it` to enter the gRPC server's container and use HDFS command `hdfs dfs -du -h <path>`to see the file size. The expected result is:
-  ```
-15.3 M  30.5 M  hdfs://nn:9000/hdma-wi-2021.parquet
-  ```
+
+```
+14.4 M   28.9 M  hdfs://nn:9000/hdma-wi-2021.parquet
+```
 
 **Hint 1:** We used similar tables in lecture: https://git.doit.wisc.edu/cdis/cs/courses/cs544/s25/main/-/tree/main/lec/15-sql
 
@@ -117,7 +120,7 @@ In this part, your task is to implement the `BlockLocations` gRPC call (you can
 For example, running `docker exec -it p4-server-1 python3 /client.py BlockLocations -f /hdma-wi-2021.parquet` should show something like this:
 
 ```
-{'7eb74ce67e75': 15, 'f7747b42d254': 6, '39750756065d': 11}
+{'7eb74ce67e75': 15, 'f7747b42d254': 7, '39750756065d': 8}
 ```
 
 Note: DataNode location is the randomly generated container ID for the