diff --git a/concourse/scripts/dss_server.ini b/concourse/scripts/dss_server.ini
index abce768f4a8..98aade525d9 100644
--- a/concourse/scripts/dss_server.ini
+++ b/concourse/scripts/dss_server.ini
@@ -11,3 +11,5 @@ eloq_store_cloud_endpoint=http://127.0.0.1:9900
 eloq_store_cloud_store_path=dss-eloqsql-mtr-test/eloqstore
 eloq_store_cloud_access_key=XXXXXX
 eloq_store_cloud_secret_key=XXXXXX
+eloq_store_max_concurrent_writes=0
+eloq_store_pages_per_file_shift=1
\ No newline at end of file
diff --git a/concourse/scripts/mtr_bootstrap_ds.cnf b/concourse/scripts/mtr_bootstrap_ds.cnf
index c25d4f8b726..65044b6a196 100644
--- a/concourse/scripts/mtr_bootstrap_ds.cnf
+++ b/concourse/scripts/mtr_bootstrap_ds.cnf
@@ -22,3 +22,6 @@ eloq_store_cloud_store_path=dss-eloqsql-mtr-test/eloqstore
 eloq_store_cloud_access_key=XXXXXX
 eloq_store_cloud_secret_key=XXXXXX
 eloq_store_reuse_local_files=true
+
+eloq_store_max_concurrent_writes=0
+eloq_store_pages_per_file_shift=1
\ No newline at end of file
diff --git a/concourse/scripts/mtr_multi_bootstrap_ds.cnf b/concourse/scripts/mtr_multi_bootstrap_ds.cnf
index 2d3bfa26533..120b889acc3 100644
--- a/concourse/scripts/mtr_multi_bootstrap_ds.cnf
+++ b/concourse/scripts/mtr_multi_bootstrap_ds.cnf
@@ -18,3 +18,6 @@ aws_secret_key=XXXXXX
 eloq_dss_config_file_path=
 eloq_dss_peer_node=localhost:9100
 
+
+eloq_store_max_concurrent_writes=0
+eloq_store_pages_per_file_shift=1
\ No newline at end of file
diff --git a/data_substrate b/data_substrate
index 0264689f661..2fb175be7e3 160000
--- a/data_substrate
+++ b/data_substrate
@@ -1 +1 @@
-Subproject commit 0264689f66177cc96140b8fd7546075c5bce9255
+Subproject commit 2fb175be7e3ad8fa294ced5c035989b915d3498c
diff --git a/storage/eloq/mysql-test/mono_basic/data_substrate.cnf b/storage/eloq/mysql-test/mono_basic/data_substrate.cnf
index 6338029ebc6..a2d10f1e799 100644
--- a/storage/eloq/mysql-test/mono_basic/data_substrate.cnf
+++ b/storage/eloq/mysql-test/mono_basic/data_substrate.cnf
@@ -19,3 +19,5 @@ eloq_store_cloud_store_path=dss-eloqsql-mtr-test/eloqstore
 eloq_store_cloud_access_key=XXXXXX
 eloq_store_cloud_secret_key=XXXXXX
 eloq_store_reuse_local_files=true
+eloq_store_max_concurrent_writes=0
+eloq_store_pages_per_file_shift=1
\ No newline at end of file
diff --git a/storage/eloq/mysql-test/mono_main/data_substrate.cnf b/storage/eloq/mysql-test/mono_main/data_substrate.cnf
index 8b2bdbffbb0..e7fa102f4e3 100644
--- a/storage/eloq/mysql-test/mono_main/data_substrate.cnf
+++ b/storage/eloq/mysql-test/mono_main/data_substrate.cnf
@@ -19,3 +19,6 @@ eloq_store_cloud_store_path=dss-eloqsql-mtr-test/eloqstore
 eloq_store_cloud_access_key=XXXXXX
 eloq_store_cloud_secret_key=XXXXXX
 eloq_store_reuse_local_files=true
+
+eloq_store_max_concurrent_writes=0
+eloq_store_pages_per_file_shift=1
\ No newline at end of file
diff --git a/storage/eloq/mysql-test/mono_multi/data_substrate1.cnf b/storage/eloq/mysql-test/mono_multi/data_substrate1.cnf
index b9f1b43b045..2de33a67db8 100644
--- a/storage/eloq/mysql-test/mono_multi/data_substrate1.cnf
+++ b/storage/eloq/mysql-test/mono_multi/data_substrate1.cnf
@@ -17,3 +17,6 @@ aws_secret_key=XXXXXX
 
 eloq_dss_config_file_path=
 eloq_dss_peer_node=127.0.0.1:9100
+
+eloq_store_max_concurrent_writes=0
+eloq_store_pages_per_file_shift=1
\ No newline at end of file
diff --git a/storage/eloq/mysql-test/mono_multi/data_substrate2.cnf b/storage/eloq/mysql-test/mono_multi/data_substrate2.cnf
index 48972faf362..4af371cb7c3 100644
--- a/storage/eloq/mysql-test/mono_multi/data_substrate2.cnf
+++ b/storage/eloq/mysql-test/mono_multi/data_substrate2.cnf
@@ -17,3 +17,6 @@ aws_secret_key=XXXXXX
 
 eloq_dss_config_file_path=
 eloq_dss_peer_node=127.0.0.1:9100
+
+eloq_store_max_concurrent_writes=0
+eloq_store_pages_per_file_shift=1
\ No newline at end of file
diff --git a/storage/eloq/mysql-test/mono_multi/data_substrate3.cnf b/storage/eloq/mysql-test/mono_multi/data_substrate3.cnf
index da20d7410e0..a9299059968 100644
--- a/storage/eloq/mysql-test/mono_multi/data_substrate3.cnf
+++ b/storage/eloq/mysql-test/mono_multi/data_substrate3.cnf
@@ -17,3 +17,6 @@ aws_secret_key=XXXXXX
 
 eloq_dss_config_file_path=
 eloq_dss_peer_node=127.0.0.1:9100
+
+eloq_store_max_concurrent_writes=0
+eloq_store_pages_per_file_shift=1
\ No newline at end of file