Index: conf/hama-default.xml =================================================================== --- conf/hama-default.xml (revision 1507999) +++ conf/hama-default.xml (working copy) @@ -165,7 +165,11 @@ want to use the custom partition program. - + + io.serializations + org.apache.hadoop.io.serializer.WritableSerialization,org.apache.hadoop.io.serializer.JavaSerialization + The default IO serialization protocol for HDFS I/O +