fix file write race condition
diff --git a/pregelix/pregelix-dataflow-std-base/pom.xml b/pregelix/pregelix-dataflow-std-base/pom.xml
index 2b435a1..77d75bf 100644
--- a/pregelix/pregelix-dataflow-std-base/pom.xml
+++ b/pregelix/pregelix-dataflow-std-base/pom.xml
@@ -90,6 +90,13 @@
</dependency>
<dependency>
<groupId>edu.uci.ics.hyracks</groupId>
+ <artifactId>hyracks-hdfs-core</artifactId>
+ <version>0.2.10-SNAPSHOT</version>
+ <type>jar</type>
+ <scope>compile</scope>
+ </dependency>
+ <dependency>
+ <groupId>edu.uci.ics.hyracks</groupId>
<artifactId>hyracks-storage-am-common</artifactId>
<version>0.2.10-SNAPSHOT</version>
<type>jar</type>