diff --git a/skywalking-storage-center/skywalking-storage/null/data/file/2017_01_09_15_24_02_220_1000 b/skywalking-storage-center/skywalking-storage/null/data/file/2017_01_09_15_24_02_220_1000
deleted file mode 100644
index bf032887c..000000000
--- a/skywalking-storage-center/skywalking-storage/null/data/file/2017_01_09_15_24_02_220_1000
+++ /dev/null
@@ -1,4 +0,0 @@
-2
-
-username_6
12
-application_code_9app
\ No newline at end of file
diff --git a/skywalking-storage-center/skywalking-storage/null/data/file/2017_01_09_15_27_09_291_1000 b/skywalking-storage-center/skywalking-storage/null/data/file/2017_01_09_15_27_09_291_1000
deleted file mode 100644
index bf032887c..000000000
--- a/skywalking-storage-center/skywalking-storage/null/data/file/2017_01_09_15_27_09_291_1000
+++ /dev/null
@@ -1,4 +0,0 @@
-2
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-username_6
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\ No newline at end of file