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From Charith Wickramarachchi <charith.dhanus...@gmail.com>
Subject HashMap/HashSet Serialization Issue
Date Sat, 07 Jan 2017 02:06:18 GMT
Hi All,

I am using flink-gelly and using a custom POJO type as the
VertexValue/MessageType (I am using the vertex-centric model). The POJO
contains HashMap/HashSet as members. While executing the job I am getting
following Log message.

17:50:53,582 INFO  org.apache.flink.api.java.typeutils.TypeExtractor
      - No fields detected for class java.util.HashSet. Cannot be used as a
PojoType. Will be handled as GenericType
17:50:53,583 INFO  org.apache.flink.api.java.typeutils.TypeExtractor
      - class java.util.HashMap is not a valid POJO type

Is there a way to resolve this issue?


Charith Dhanushka Wickramaarachchi

Tel  +1 213 447 4253
Blog  http://charith.wickramaarachchi.org/
Twitter  @charithwiki <https://twitter.com/charithwiki>

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