Enable TTY during bench data gen (#9626)

Author: gruuya

.github/workflows/pr_benchmarks.yml

@@ -22,6 +22,8 @@ jobs:
           ref: refs/pull/${{ github.event.issue.number }}/head
 
       - name: Setup data and generate unique result names
+        # Workaround for `the input device is not a TTY`, appropriated from https://github.com/actions/runner/issues/241
+        shell: 'script -q -e -c "bash -e {0}"'
         run: |
           cd benchmarks
           mkdir data

benchmarks/README.md

@@ -150,6 +150,8 @@ Benchmark tpch_mem.json
 └──────────────┴──────────────┴──────────────┴───────────────┘
 ```
 
+Note that you can also execute an automatic comparison of the changes in a given PR against the base 
+just by including the trigger `/benchmark` in any comment.
 
 ### Running Benchmarks Manually
 

benchmarks/bench.sh

@@ -280,7 +280,7 @@ data_tpch() {
         echo " tbl files exist ($FILE exists)."
     else
         echo " creating tbl files with tpch_dbgen..."
-        docker run -v "${TPCH_DIR}":/data --rm ghcr.io/scalytics/tpch-docker:main -vf -s ${SCALE_FACTOR}
+        docker run -v "${TPCH_DIR}":/data -it --rm ghcr.io/scalytics/tpch-docker:main -vf -s ${SCALE_FACTOR}
     fi
 
     # Copy expected answers into the ./data/answers directory if it does not already exist
@@ -290,7 +290,7 @@ data_tpch() {
     else
         echo " Copying answers to ${TPCH_DIR}/answers"
         mkdir -p "${TPCH_DIR}/answers"
-        docker run -v "${TPCH_DIR}":/data --entrypoint /bin/bash --rm ghcr.io/scalytics/tpch-docker:main  -c "cp -f /opt/tpch/2.18.0_rc2/dbgen/answers/* /data/answers/"
+        docker run -v "${TPCH_DIR}":/data -it --entrypoint /bin/bash --rm ghcr.io/scalytics/tpch-docker:main  -c "cp -f /opt/tpch/2.18.0_rc2/dbgen/answers/* /data/answers/"
     fi
 
     # Create 'parquet' files from tbl