diff --git a/examples/run_benchmarks.sh b/examples/run_benchmarks.sh
index 1724d62..dc0d909 100755
--- a/examples/run_benchmarks.sh
+++ b/examples/run_benchmarks.sh
@@ -9,57 +9,19 @@ set -euo pipefail
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
 cd "${SCRIPT_DIR}/"
 
-./terasort/build.sh
 ./sql/build.sh
+./terasort/build.sh
 
 REPEAT=${REPEAT:-20}
 export CHECKSUM_ENABLED=${CHECKSUM_ENABLED:-false}
+export USE_FALLBACK_FETCH=false
 export USE_S3_SHUFFLE=0
 export USE_NFS_SHUFFLE=0
 
-# TeraSort experiments
-export INSTANCES=4
-TERASORT_SIZES=(
-   1g
-   10g
-   100g
+BLOCK_SIZES=(
+    32
+    128
 )
-for size in "${TERASORT_SIZES[@]}"; 
-do
-    for ((i = 0 ; i < ${REPEAT} ; i++));
-    do
-       export SIZE=$size
-       export USE_FALLBACK_FETCH=false
-
-       export USE_S3_SHUFFLE=0
-       export USE_NFS_SHUFFLE=0
-       ./terasort/run.sh || true
-       mc rm -r --force zac/zrlio-tmp
-
-       export USE_S3_SHUFFLE=0
-       export USE_NFS_SHUFFLE=1
-       ./terasort/run.sh || true
-       mc rm -r --force zac/zrlio-tmp
-
-       export USE_S3_SHUFFLE=1
-       export USE_NFS_SHUFFLE=0
-       ./terasort/run.sh || true
-       mc rm -r --force zac/zrlio-tmp
-
-    #    # Enable fallback fetch
-    #    export USE_FALLBACK_FETCH=true
-
-    #    export USE_S3_SHUFFLE=0
-    #    export USE_NFS_SHUFFLE=1
-    #    ./terasort/run.sh || true
-    #    mc rm -r --force zac/zrlio-tmp
-
-    #    export USE_S3_SHUFFLE=1
-    #    export USE_NFS_SHUFFLE=0
-    #    ./terasort/run.sh || true
-    #    mc rm -r --force zac/zrlio-tmp
-   done
-done
 
 # SQL experiments
 export INSTANCES=12
@@ -71,32 +33,52 @@ SQL_QUERIES=(
     q67 #   66 GB shuffle data
 )
 
-for ((i = 0 ; i < ${REPEAT} ; i++));
-do
-    for query in "${SQL_QUERIES[@]}"; do
-        export USE_FALLBACK_FETCH=false
-
-        export USE_S3_SHUFFLE=0
-        export USE_NFS_SHUFFLE=0
-        ./sql/run_single_query.sh $query || true
-        
-        export USE_S3_SHUFFLE=0
-        export USE_NFS_SHUFFLE=1
-        ./sql/run_single_query.sh $query || true
-
-        export USE_S3_SHUFFLE=1
-        export USE_NFS_SHUFFLE=0
-        ./sql/run_single_query.sh $query || true
-
-        # # Enable fallback fetch.
-        # export USE_FALLBACK_FETCH=true
+for ((i = 0 ; i < ${REPEAT} ; i++)); do
+    for blockSize in "${BLOCK_SIZES[@]}"; do
+        export BLOCK_SIZE=${blockSize}
+        for query in "${SQL_QUERIES[@]}"; do
+            export USE_S3_SHUFFLE=0
+            export USE_NFS_SHUFFLE=0
+            ./sql/run_single_query.sh $query || true
+
+            export USE_S3_SHUFFLE=0
+            export USE_NFS_SHUFFLE=1
+            ./sql/run_single_query.sh $query || true
+
+            export USE_S3_SHUFFLE=1
+            export USE_NFS_SHUFFLE=0
+            ./sql/run_single_query.sh $query || true
+        done
+    done
+done
 
-        # export USE_S3_SHUFFLE=0
-        # export USE_NFS_SHUFFLE=1
-        # ./sql/run_single_query.sh $query || true
+# TeraSort experiments
+export INSTANCES=4
+TERASORT_SIZES=(
+   1g
+   10g
+   100g
+)
 
-        # export USE_S3_SHUFFLE=1
-        # export USE_NFS_SHUFFLE=0
-        # ./sql/run_single_query.sh $query || true
+for size in "${TERASORT_SIZES[@]}"; do
+    for ((i = 0 ; i < ${REPEAT} ; i++)); do
+        for blockSize in "${BLOCK_SIZES[@]}"; do
+            export BLOCK_SIZE=${blockSize}
+            export SIZE=$size
+            export USE_FALLBACK_FETCH=false
+            export USE_TRANSFER_TO=1
+
+            export USE_S3_SHUFFLE=0
+            export USE_NFS_SHUFFLE=0
+            ./terasort/run.sh || true
+
+            export USE_S3_SHUFFLE=0
+            export USE_NFS_SHUFFLE=1
+            ./terasort/run.sh || true
+
+            export USE_S3_SHUFFLE=1
+            export USE_NFS_SHUFFLE=0
+            ./terasort/run.sh || true
+        done
     done
-done
+done
\ No newline at end of file
diff --git a/examples/sql/run_benchmark.sh b/examples/sql/run_benchmark.sh
index b8a5b82..f70ff96 100755
--- a/examples/sql/run_benchmark.sh
+++ b/examples/sql/run_benchmark.sh
@@ -35,6 +35,12 @@ export SPARK_EXECUTOR_CORES=$EXECUTOR_CPU
 export SPARK_DRIVER_MEMORY=$DRIVER_MEM
 export SPARK_EXECUTOR_MEMORY=$EXECUTOR_MEM
 
+BLOCK_SIZE=${BLOCK_SIZE:-128}
+LOGGING=(
+    --conf spark.eventLog.enabled=true
+    --conf spark.eventLog.dir=file:///spark-logs
+)
+
 SPARK_HADOOP_S3A_CONFIG=(
     # Required
     --conf spark.hadoop.fs.s3a.impl=org.apache.hadoop.fs.s3a.S3AFileSystem
@@ -44,19 +50,17 @@ SPARK_HADOOP_S3A_CONFIG=(
     --conf spark.hadoop.fs.s3a.endpoint=${S3A_ENDPOINT}
     --conf spark.hadoop.fs.s3a.path.style.access=true
     --conf spark.hadoop.fs.s3a.fast.upload=true
-    --conf spark.hadoop.fs.s3a.block.size=$((128*1024*1024))
+    --conf spark.hadoop.fs.s3a.block.size=$(($BLOCK_SIZE * 1024 * 1024))
+    --conf spark.hadoop.fs.s3a.fast.upload.buffer=array
 )
 
 SPARK_S3_SHUFFLE_CONFIG=(
-    --conf spark.hadoop.fs.s3a.access.key=${S3A_ACCESS_KEY}
-    --conf spark.hadoop.fs.s3a.secret.key=${S3A_SECRET_KEY}
-    --conf spark.hadoop.fs.s3a.endpoint=${S3A_ENDPOINT}
     --conf spark.shuffle.manager="org.apache.spark.shuffle.sort.S3ShuffleManager"
     --conf spark.shuffle.sort.io.plugin.class=org.apache.spark.shuffle.S3ShuffleDataIO
     --conf spark.shuffle.checksum.enabled=${CHECKSUM_ENABLED}
     --conf spark.shuffle.s3.rootDir=${SHUFFLE_DESTINATION}
-    --conf spark.shuffle.s3.useSparkShuffleFetch=${USE_FALLBACK_FETCH}
-    --conf spark.storage.decommission.fallbackStorage.path=${SHUFFLE_DESTINATION}
+    # --conf spark.shuffle.s3.useSparkShuffleFetch=${USE_FALLBACK_FETCH}
+    # --conf spark.storage.decommission.fallbackStorage.path=${SHUFFLE_DESTINATION}
 )
 
 if (( "$USE_S3_SHUFFLE" == 0 )); then
@@ -83,8 +87,8 @@ if (( "$USE_NFS_SHUFFLE" == 1 )); then
         --conf spark.kubernetes.executor.podTemplateFile=${SCRIPT_DIR}/../templates/executor_nfs.yml
         --conf spark.kubernetes.driver.podTemplateFile=${SCRIPT_DIR}/../templates/driver_nfs.yml
         --conf spark.hadoop.fs.file.block.size=$((128*1024*1024))
-        --conf spark.shuffle.s3.useSparkShuffleFetch=${USE_FALLBACK_FETCH}
-        --conf spark.storage.decommission.fallbackStorage.path=file:///nfs/
+        # --conf spark.shuffle.s3.useSparkShuffleFetch=${USE_FALLBACK_FETCH}
+        # --conf spark.storage.decommission.fallbackStorage.path=file:///nfs/
     )
 
     SPARK_KUBERNETES_TEMPLATES=(
@@ -97,6 +101,15 @@ if [[ "${USE_FALLBACK_FETCH}" == "true" ]]; then
     PROCESS_TAG="${PROCESS_TAG}-fallback"
 fi
 
+EXTRA_OPTIONS=(
+)
+if (( "${USE_TRANSFER_TO:-1}" == 0 )); then
+    PROCESS_TAG="${PROCESS_TAG}-transferTo_false"
+    EXTRA_OPTIONS=(
+        --conf spark.file.transferTo=false \
+    )
+fi
+
 USE_PROFILER=${USE_PROFILER:-0}
 if (( "${USE_PROFILER}" == 1 )); then
     PROFILER_CONFIG="reporter=com.uber.profiling.reporters.InfluxDBOutputReporter,configProvider=com.uber.profiling.YamlConfigProvider,configFile=/profiler_config.yml,metricInterval=5000,sampleInterval=5000,ioProfiling=true"
@@ -117,10 +130,12 @@ ${SPARK_HOME}/bin/spark-submit \
         --conf "spark.driver.extraJavaOptions=${DRIVER_JAVA_OPTIONS}" \
         --conf "spark.executor.extraJavaOptions=${EXECUTOR_JAVA_OPTIONS}" \
     \
-    --name ce-${PROCESS_TAG}-${INSTANCES}x${EXECUTOR_CPU}--${EXECUTOR_MEM} \
+    --name ce-${PROCESS_TAG}-bs${BLOCK_SIZE}MiB-${INSTANCES}x${EXECUTOR_CPU}--${EXECUTOR_MEM} \
     --conf spark.serializer="org.apache.spark.serializer.KryoSerializer" \
     --conf spark.kryoserializer.buffer=128mb \
     --conf spark.executor.instances=$INSTANCES \
+    "${EXTRA_OPTIONS[@]}" \
+    "${LOGGING[@]}" \
     "${SPARK_HADOOP_S3A_CONFIG[@]}" \
     "${SPARK_S3_SHUFFLE_CONFIG[@]}" \
     "${SPARK_KUBERNETES_TEMPLATES[@]}" \
diff --git a/examples/templates/driver.yml b/examples/templates/driver.yml
index 218e4fe..67ebec4 100644
--- a/examples/templates/driver.yml
+++ b/examples/templates/driver.yml
@@ -14,6 +14,14 @@ spec:
     image: will-be-overwritten
     resources:
       limits:
-        ephemeral-storage: 16G
+        ephemeral-storage: 32G
       requests:
-        ephemeral-storage: 16G
+        ephemeral-storage: 32G
+    volumeMounts:
+    - name: spark-logs
+      mountPath: /spark-logs
+  volumes:
+  - name: spark-logs
+    nfs:
+      server: 10.40.1.32
+      path: /spark-logs
\ No newline at end of file
diff --git a/examples/templates/driver_nfs.yml b/examples/templates/driver_nfs.yml
index 1a42077..6ae2703 100644
--- a/examples/templates/driver_nfs.yml
+++ b/examples/templates/driver_nfs.yml
@@ -20,8 +20,14 @@ spec:
     volumeMounts:
     - name: nfs
       mountPath: /nfs
+    - name: spark-logs
+      mountPath: /spark-logs
   volumes:
   - name: nfs
     nfs:
       server: 10.40.1.32
       path: /shuffle
+  - name: spark-logs
+    nfs:
+      server: 10.40.1.32
+      path: /spark-logs
diff --git a/examples/templates/executor.yml b/examples/templates/executor.yml
index 218e4fe..7194de0 100644
--- a/examples/templates/executor.yml
+++ b/examples/templates/executor.yml
@@ -14,6 +14,14 @@ spec:
     image: will-be-overwritten
     resources:
       limits:
-        ephemeral-storage: 16G
+        ephemeral-storage: 32G
       requests:
-        ephemeral-storage: 16G
+        ephemeral-storage: 32G
+    volumeMounts:
+    - name: spark-logs
+      mountPath: /spark-logs
+  volumes:
+  - name: spark-logs
+    nfs:
+      server: 10.40.1.32
+      path: /spark-logs
diff --git a/examples/templates/executor_nfs.yml b/examples/templates/executor_nfs.yml
index 1a42077..6ae2703 100644
--- a/examples/templates/executor_nfs.yml
+++ b/examples/templates/executor_nfs.yml
@@ -20,8 +20,14 @@ spec:
     volumeMounts:
     - name: nfs
       mountPath: /nfs
+    - name: spark-logs
+      mountPath: /spark-logs
   volumes:
   - name: nfs
     nfs:
       server: 10.40.1.32
       path: /shuffle
+  - name: spark-logs
+    nfs:
+      server: 10.40.1.32
+      path: /spark-logs
diff --git a/examples/terasort/run.sh b/examples/terasort/run.sh
index 194e94a..f91454b 100755
--- a/examples/terasort/run.sh
+++ b/examples/terasort/run.sh
@@ -35,6 +35,12 @@ export SPARK_EXECUTOR_CORES=$EXECUTOR_CPU
 export SPARK_DRIVER_MEMORY=$DRIVER_MEM
 export SPARK_EXECUTOR_MEMORY=$EXECUTOR_MEM
 
+LOGGING=(
+    --conf spark.eventLog.enabled=true
+    --conf spark.eventLog.dir=file:///spark-logs
+)
+
+BLOCK_SIZE=${BLOCK_SIZE:-128}
 
 SPARK_HADOOP_S3A_CONFIG=(
     # Required
@@ -45,20 +51,18 @@ SPARK_HADOOP_S3A_CONFIG=(
     --conf spark.hadoop.fs.s3a.endpoint=${S3A_ENDPOINT}
     --conf spark.hadoop.fs.s3a.path.style.access=true
     --conf spark.hadoop.fs.s3a.fast.upload=true
-    --conf spark.hadoop.fs.s3a.block.size=$((128*1024*1024))
+    --conf spark.hadoop.fs.s3a.block.size=$(($BLOCK_SIZE * 1024 * 1024))
+    --conf spark.hadoop.fs.s3a.fast.upload.buffer=array
 )
 
 
 SPARK_S3_SHUFFLE_CONFIG=(
-    --conf spark.hadoop.fs.s3a.access.key=${S3A_ACCESS_KEY}
-    --conf spark.hadoop.fs.s3a.secret.key=${S3A_SECRET_KEY}
-    --conf spark.hadoop.fs.s3a.endpoint=${S3A_ENDPOINT}
     --conf spark.shuffle.manager="org.apache.spark.shuffle.sort.S3ShuffleManager"
     --conf spark.shuffle.sort.io.plugin.class=org.apache.spark.shuffle.S3ShuffleDataIO
     --conf spark.shuffle.checksum.enabled=${CHECKSUM_ENABLED}
     --conf spark.shuffle.s3.rootDir=${SHUFFLE_DESTINATION}
-    --conf spark.shuffle.s3.useSparkShuffleFetch=${USE_FALLBACK_FETCH}
-    --conf spark.storage.decommission.fallbackStorage.path=${SHUFFLE_DESTINATION}
+    # --conf spark.shuffle.s3.useSparkShuffleFetch=${USE_FALLBACK_FETCH}
+    # --conf spark.storage.decommission.fallbackStorage.path=${SHUFFLE_DESTINATION}
 )
 
 if (( "$USE_S3_SHUFFLE" == 0 )); then
@@ -82,9 +86,10 @@ if (( "$USE_NFS_SHUFFLE" == 1 )); then
         --conf spark.shuffle.sort.io.plugin.class=org.apache.spark.shuffle.S3ShuffleDataIO
         --conf spark.shuffle.checksum.enabled=${CHECKSUM_ENABLED}
         --conf spark.shuffle.s3.rootDir=file:///nfs/
-        --conf spark.hadoop.fs.file.block.size=$((128*1024*1024))
-        --conf spark.shuffle.s3.useSparkShuffleFetch=${USE_FALLBACK_FETCH}
-        --conf spark.storage.decommission.fallbackStorage.path=file:///nfs/
+        --conf spark.hadoop.fs.file.block.size=$(($BLOCK_SIZE*1024*1024))
+        # --conf spark.shuffle.s3.useSparkShuffleFetch=${USE_FALLBACK_FETCH}
+        # --conf spark.storage.decommission.fallbackStorage.path=file:///nfs/
+        # --conf spark.shuffle.s3.maxConcurrencyTask=5
     )
 
     SPARK_KUBERNETES_TEMPLATES=(
@@ -97,6 +102,15 @@ if [[ "${USE_FALLBACK_FETCH}" == "true" ]]; then
     PROCESS_TAG="${PROCESS_TAG}-fallback"
 fi
 
+EXTRA_OPTIONS=(
+)
+if (( "${USE_TRANSFER_TO:-1}" == 0 )); then
+    PROCESS_TAG="${PROCESS_TAG}-transferTo_false"
+    EXTRA_OPTIONS=(
+        --conf spark.file.transferTo=false \
+    )
+fi
+
 USE_PROFILER=${USE_PROFILER:-0}
 if (( "${USE_PROFILER}" == 1 )); then
     PROFILER_CONFIG="reporter=com.uber.profiling.reporters.InfluxDBOutputReporter,configProvider=com.uber.profiling.YamlConfigProvider,configFile=/profiler_config.yml,metricInterval=5000,sampleInterval=5000,ioProfiling=true"
@@ -117,10 +131,11 @@ ${SPARK_HOME}/bin/spark-submit \
         --conf "spark.driver.extraJavaOptions=${DRIVER_JAVA_OPTIONS}" \
         --conf "spark.executor.extraJavaOptions=${EXECUTOR_JAVA_OPTIONS}" \
     \
-    --name ce-terasort-${SIZE}${PROCESS_TAG}-${INSTANCES}x${EXECUTOR_CPU}--${EXECUTOR_MEM} \
+    --name ce-terasort-${SIZE}${PROCESS_TAG}-bs${BLOCK_SIZE}MiB-${INSTANCES}x${EXECUTOR_CPU}--${EXECUTOR_MEM} \
     --conf spark.serializer="org.apache.spark.serializer.KryoSerializer" \
-    --conf spark.kryoserializer.buffer=128mb \
     --conf spark.executor.instances=$INSTANCES \
+    "${EXTRA_OPTIONS[@]}" \
+    "${LOGGING[@]}" \
     "${SPARK_HADOOP_S3A_CONFIG[@]}" \
     "${SPARK_S3_SHUFFLE_CONFIG[@]}" \
     "${SPARK_KUBERNETES_TEMPLATES[@]}" \
@@ -154,7 +169,6 @@ ${SPARK_HOME}/bin/spark-submit \
     --conf spark.executor.instances=$INSTANCES \
     --conf spark.jars.ivy=/tmp/.ivy \
     --conf spark.serializer=org.apache.spark.serializer.KryoSerializer \
-    --conf spark.kryoserializer.buffer=128mb \
     "${SPARK_HADOOP_S3A_CONFIG[@]}" \
     --conf spark.ui.prometheus.enabled=true \
     --conf spark.network.timeout=10000 \