change default part size

src/main/java/tsdb/TsdbApiEntry.java

@@ -12,7 +12,7 @@ public class TsdbApiEntry {
 
     private String metricName = "";
     private String dataDir = "data";
-    private long partSize = 10000;
+    private long partSize = 1_000_000;
     private String correlationId = "";
 
     public String getMetricName() {