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Signed-off-by: andylokandy <andylokandy@hotmail.com>

.github/workflows/ci.yml

@@ -43,12 +43,22 @@ jobs:
         run: curl --proto '=https' --tlsv1.2 -sSf https://tiup-mirrors.pingcap.com/install.sh | sh
       - name: Start TiUP Playground
         run: |
+          # Start TiKV in APIV1TTL
           /home/runner/.tiup/bin/tiup playground ${{ matrix.tikv_version }} --mode tikv-slim --kv 1 --without-monitor --kv.config /home/runner/work/client-java/client-java/.github/config/tikv_rawkv.toml --pd.config /home/runner/work/client-java/client-java/.github/config/pd.toml &> raw.out 2>&1 &
+
+          # The first run of `tiup` has to download all components so it'll take longer.
           sleep 1m 30s
+
+          # Start TiKV in APIV1
           /home/runner/.tiup/bin/tiup playground ${{ matrix.tikv_version }} --mode tikv-slim --kv 1 --without-monitor --kv.config /home/runner/work/client-java/client-java/.github/config/tikv_txnkv.toml --pd.config /home/runner/work/client-java/client-java/.github/config/pd.toml &> txn.out 2>&1 &
+
           sleep 30s
+
+          # Parse PD address from `tiup` output
           echo "RAWKV_PD_ADDRESSES=$(cat raw.out | grep -oP '(?<=PD client endpoints: \[)[0-9\.:]+(?=\])')" >> $GITHUB_ENV
           echo "TXNKV_PD_ADDRESSES=$(cat txn.out | grep -oP '(?<=PD client endpoints: \[)[0-9\.:]+(?=\])')" >> $GITHUB_ENV
+
+          # Log the output
           echo "$(cat raw.out)" >&2
           echo "$(cat txn.out)" >&2
       - name: Run Integration Test